实训(学生管理系统)
实训第一步
利用百度脑图构建总体框架。
第二步创建数据库
创建相关的表
第三步在表中插入数据!
第四实现步骤
在lib里添加链接MySQL数据库的jar包
在images中添加图片
第五步创建相关的类
学校实体College
/**
-
学校实体
-
yh
-
*/
package net.yh.student.dbutil.bean;
import java.util.Date;
public class College {
private int id;
// 学校标识符
private String name;
// 学校名称
private String president;
// 校长
private Date startTime;
// 建校时间
private String address;
//地址
private String telephone;
// 联系电话
private String email;
// 邮箱
private String profile;
// 学校简介public int getId() {
return id;
}public void setId(int id) {
this.id = id;
}public String getName() {
return name;
}public void setName(String name) {
this.name = name;
}public String getPresident() {
return president;
}public void setPresident(String president) {
this.president = president;
}public Date getStartTime() {
return startTime;
}public void setStartTime(Date startTime) {
this.startTime = startTime;
}public String getAddress() {
return address;
}public void setAddress(String address) {
this.address = address;
}public String getTelephone() {
return telephone;
}public void setTelephone(String telephone) {
this.telephone = telephone;
}public String getEmail() {
return email;
}public void setEmail(String email) {
this.email = email;
}public String getProfile() {
return profile;
}public void setProfile(String profile) {
this.profile = profile;
}@Override
public String toString(){
return “College [id=” + id + “, name=” + name + “, president=” + president + “, startTime=” + startTime
+ “, telephone=” + telephone + “, email=” + email + “, address=” + address + “, profile=” + profile
+ “]”;}
}
状态实体Status
package net.yh.student.dbutil.bean;
//状态实体
public class Status {
private int id;
//标识符
private String college;
//校名
private String version;
//版本
private String author;
//作者
private String telephone;
//联系电话
private String address;
// 通讯地址
private String email;
//邮箱public int getId() { return id; } public void setId(int id) { this.id = id; } public String getCollege() { return college; } public void setCollege(String college) { this.college = college; } public String getVersion() { return version; } public void setVersion(String version) { this.version = version; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } public String getTelephone() { return telephone; } public void setTelephone(String telephone) { this.telephone = telephone; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @Override public String toString(){ return "Status [id="+id+",college="+college+ ",version="+version+",author="+author+",telephone="+telephone+ ",address="+address+",email="+email+"]"; }}
学生类Student
package net.yh.student.dbutil.bean;
//学生实体
public class Student {
private String id;
//学号
private String name;
//姓名
private String sex;
//性别
private int age;
//年龄
private String department;
//系部
private String clazz;
//班级
private String telephone;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public String getClazz() {
return clazz;
}
public void setClazz(String clazz) {
this.clazz = clazz;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
@Override
public String toString(){
return "Student [id="+id+",name="+name+",sex="+sex+",age="+age+",departmen=t"+department+",clazz="+clazz+",telephone="+telephone+"]";
}
}
用户类User
/**
- */
package net.yh.student.dbutil.bean;
import java.util.Date;
public class User {
private int id;
//用户标识符
private String usernname;
//用户名
private String password;
//密码
private String telephone;
//电话
private Date registerTime;
//注册时间
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsernname() {
return usernname;
}
public void setUsernname(String usernname) {
this.usernname = usernname;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public Date getRegisterTime() {
return registerTime;
}
public void setRegisterTime(Date registerTime) {
this.registerTime = registerTime;
}
@Override
public String toString(){
return "User [id="+id+",usernname="+usernname+
",password="+password+",telephone="+telephone+
",registerTime"+registerTime+"]";
}
}
第六步数据访问接口
CollegeDao
package net.yh.student.dbutil.dao;
import net.yh.student.dbutil.bean.College;
public interface CollegeDao {
College findById(int id);
int update(College college);
}
StatusDao
package net.yh.student.dbutil.dao;
import net.yh.student.dbutil.bean.Status;
public interface StatusDao {
Status findById(int id);
int update(Status status);
}
StudentDao
package net.yh.student.dbutil.dao;
import net.yh.student.dbutil.bean.Student;
import java.util.List;
import java.util.Vector;
public interface StudentDao {
int insert(Student student);
int deleteById(String id);
int deleteByClass(String clazz);
int deleteByDepartment(String department);
int update(Student student);
Student findById(String id);
List findByName(String name);
List findByClass(String Clazz);
List findByDepartment(String department);
List findAll();
Vector findRowsBysex();
Vector findRowsBySex();
Vector findRowsByClass();
Vector findRowsByDepartment();
}
UserDao
package net.yh.student.dbutil.dao;
import net.yh.student.dbutil.bean.User;
import java.util.List;
public interface UserDao {
int insert(User user);
int deleteById(int id);
int update(User user);
User findById(int id);
ListfindAll();
User login(String username,String password);
}
第七步创建端口类
CollegeDaoImpl
package net.yh.student.dbutil.dao.impl;
import net.yh.student.dbutil.bean.College;
import net.yh.student.dbutil.ConnectionManager;
import net.yh.student.dbutil.dao.CollegeDao;
import java.sql.*;
public class CollegeDaoImpl implements CollegeDao {
@Override
public College findById(int id) {
// 声明学校对象
College college = null;
// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = "select * from t_college where id = ?";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setInt(1, id);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 判断结果集是否有记录
if (rs.next()) {
// 实例化学校对象
college = new College();
// 利用当前记录字段值去设置学校对象的属性
college.setId(rs.getInt("id"));
college.setName(rs.getString("name"));
college.setPresident(rs.getString("president"));
college.setStartTime(rs.getDate("start_time"));
college.setTelephone(rs.getString("telephone"));
college.setEmail(rs.getString("email"));
college.setAddress(rs.getString("address"));
college.setProfile(rs.getString("profile"));
}
// 7. 关闭预备语句对象
pstmt.close();
// 8. 关闭结果集对象
rs.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}
// 返回学校对象
return college;
}
@Override
public int update(College college) {
// 定义更新记录数
int count = 0;
// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = "update t_college set name = ?, president = ?, start_time = ?,"
+ " telephone = ?, email = ?, profile = ? where id = ?";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, college.getName());
pstmt.setString(2, college.getPresident());
pstmt.setTimestamp(3, new Timestamp(college.getStartTime().getTime()));
pstmt.setString(4, college.getTelephone());
pstmt.setString(5, college.getEmail());
pstmt.setString(6, college.getProfile());
pstmt.setInt(7, college.getId());
// 5. 执行SQL，返回更新记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}
// 返回更新记录数
return count;
}
}
StatusDaoImpl
package net.yh.student.dbutil.dao.impl;
import net.yh.student.dbutil.bean.Status;
import net.yh.student.dbutil.ConnectionManager;
import net.yh.student.dbutil.dao.StatusDao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class StatusDaoImpl implements StatusDao {
@Override
public Status findById(int id){
Status status=null;
// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “SELECT * FROM t_status WHERE id = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setInt(1, id);
// 5. 执行SQL查询，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 判断结果集是否有记录
if (rs.next()) {
// 实例化状态
status = new Status();
// 利用当前记录字段值去设置状态对象的属性
status.setId(rs.getInt(“id”));
status.setCollege(rs.getString(“college”));
status.setVersion(rs.getString(“version”));
status.setAuthor(rs.getString(“author”));
status.setTelephone(rs.getString(“telephone”));
status.setAddress(rs.getString(“address”));
status.setEmail(rs.getString(“email”));
}
// 7. 关闭预备语句对象
pstmt.close();
// 8. 关闭结果集对象
rs.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}
// 返回状态对象
return status;
}
@Override
public int update(Status status) {
// 定义更新记录数
int count = 0;
// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = "UPDATE t_status SET college = ?, version = ?, author = ?,"
+ " telephone = ?, address = ?, email = ? WHERE id = ?";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, status.getCollege());
pstmt.setString(2, status.getVersion());
pstmt.setString(3, status.getAuthor());
pstmt.setString(4, status.getTelephone());
pstmt.setString(5, status.getAddress());
pstmt.setString(6, status.getEmail());
pstmt.setInt(7, status.getId());
// 5. 执行更新操作，更新记录
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}
// 返回更新记录数
return count;
}
}
StudentdaoImpl
package net.yh.student.dbutil.dao.impl;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.dao.StudentDao;
import net.yh.student.dbutil.ConnectionManager;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
/**
-
功能：学生数据访问接口实现类
-
作者：yh
-
日期：2019年6月18日
/
public class StudentDaoImpl implements StudentDao {
/*-
插入学生记录
-
@param student
-
@return 插入记录数
*/
@Override
public int insert(Student student) {
// 定义插入记录数
int count = 0;// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “insert into t_student (id, name, sex, age, department, class, telephone)”
+ " values (?, ?, ?, ?, ?, ?, ?)";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, student.getId());
pstmt.setString(2, student.getName());
pstmt.setString(3, student.getSex());
pstmt.setInt(4, student.getAge());
pstmt.setString(5, student.getDepartment());
pstmt.setString(6, student.getClazz());
pstmt.setString(7, student.getTelephone());
// 5. 执行SQL，返回插入记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回插入记录数
return count;
}
/**
-
按学号删除学生记录
-
@param id
-
@return 删除记录数
*/
@Override
public int deleteById(String id) {
// 定义删除记录数
int count = 0;// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “delete from t_student where id = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, id);
// 5. 执行SQL，返回删除记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回删除记录数
return count;
}
/**
-
按班级删除学生记录
-
@param clazz
-
@return 删除记录数
*/
@Override
public int deleteByClass(String clazz) {
// 定义删除记录数
int count = 0;// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “delete from t_student where class = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, clazz);
// 5. 执行SQL，返回删除记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回删除记录数
return count;
}
/**
-
按系部删除学生记录
-
@param department
-
@return 删除记录数
*/
@Override
public int deleteByDepartment(String department) {
// 定义删除记录数
int count = 0;// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “delete from t_student where department = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, department);
// 5. 执行SQL，返回删除记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回删除记录数
return count;
}
/**
-
更新学生记录
-
@param student
-
@return 更新记录数
*/
@Override
public int update(Student student) {
// 定义更新记录数
int count = 0;// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “update t_student set name = ?, sex = ?, age = ?,”
+ " department = ?, class = ?, telephone = ? where id = ?";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, student.getName());
pstmt.setString(2, student.getSex());
pstmt.setInt(3, student.getAge());
pstmt.setString(4, student.getDepartment());
pstmt.setString(5, student.getClazz());
pstmt.setString(6, student.getTelephone());
pstmt.setString(7, student.getId());
// 5. 执行SQL，返回更新记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回更新记录数
return count;
}
/**
-
按学号查询学生记录
-
@param id
-
@return 学生实体
*/
@Override
public Student findById(String id) {
// 声明学生对象
Student student = null;// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_student where id = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, id);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 判断结果集是否有记录
if (rs.next()) {
// 创建学生实体
student = new Student();
// 利用当前记录各字段值设置学生实体属性
student.setId(rs.getString(“id”));
student.setName(rs.getString(“name”));
student.setSex(rs.getString(“sex”));
student.setAge(rs.getInt(“age”));
student.setDepartment(rs.getString(“department”));
student.setClazz(rs.getString(“class”));
student.setTelephone(rs.getString(“telephone”));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回学生对象
return student;
}
/**
-
按姓名查询学生记录
-
@param name
-
@return 学生列表
*/
@Override
public List findByName(String name) {
// 声明学生列表
List students = new ArrayList();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_student where name like ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, name + “%”);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 遍历结果集
while (rs.next()) {
// 创建学生实体
Student student = new Student();
// 利用当前记录各字段值设置学生实体属性
student.setId(rs.getString(“id”));
student.setName(rs.getString(“name”));
student.setSex(rs.getString(“sex”));
student.setAge(rs.getInt(“age”));
student.setDepartment(rs.getString(“department”));
student.setClazz(rs.getString(“class”));
student.setTelephone(rs.getString(“telephone”));
// 将实体添加到学生列表
students.add(student);
}
// 7. 关闭结果集
rs.close();
// 8. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回学生列表
return students;
}
/**
-
按班级查询学生记录
-
@param clazz
-
@return 学生列表
*/
@Override
public List findByClass(String clazz) {
// 声明学生列表
List students = new ArrayList();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_student where class like ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, clazz + “%”);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 遍历结果集
while (rs.next()) {
// 创建学生实体
Student student = new Student();
// 利用当前记录各字段值设置学生实体属性
student.setId(rs.getString(“id”));
student.setName(rs.getString(“name”));
student.setSex(rs.getString(“sex”));
student.setAge(rs.getInt(“age”));
student.setDepartment(rs.getString(“department”));
student.setClazz(rs.getString(“class”));
student.setTelephone(rs.getString(“telephone”));
// 将实体添加到学生列表
students.add(student);
}
// 7. 关闭结果集
rs.close();
// 8. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回学生列表
return students;
}
/**
-
按系部查询学生记录
-
@param department
-
@return 学生列表
*/
@Override
public List findByDepartment(String department) {
// 声明学生列表
List students = new ArrayList();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_student where department like ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, department + “%”);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 遍历结果集
while (rs.next()) {
// 创建学生实体
Student student = new Student();
// 利用当前记录各字段值设置学生实体属性
student.setId(rs.getString(“id”));
student.setName(rs.getString(“name”));
student.setSex(rs.getString(“sex”));
student.setAge(rs.getInt(“age”));
student.setDepartment(rs.getString(“department”));
student.setClazz(rs.getString(“class”));
student.setTelephone(rs.getString(“telephone”));
// 将实体添加到学生列表
students.add(student);
}
// 7. 关闭结果集
rs.close();
// 8. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回学生列表
return students;
}
/**
-
查询全部学生记录
-
@return 学生列表
*/
@Override
public List findAll() {
// 声明学生列表
List students = new ArrayList();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_student”;
try {
// 3. 创建语句对象
Statement stmt = conn.createStatement();
// 4. 执行SQL，返回结果集
ResultSet rs = stmt.executeQuery(strSQL);
// 5. 遍历结果集
while (rs.next()) {
// 创建学生实体
Student student = new Student();
// 利用当前记录各字段值设置学生实体属性
student.setId(rs.getString(“id”));
student.setName(rs.getString(“name”));
student.setSex(rs.getString(“sex”));
student.setAge(rs.getInt(“age”));
student.setDepartment(rs.getString(“department”));
student.setClazz(rs.getString(“class”));
student.setTelephone(rs.getString(“telephone”));
// 将实体添加到学生列表
students.add(student);
}
// 6. 关闭结果集
rs.close();
// 7. 关闭语句对象
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回学生列表
return students;
}
@Override
public Vector findRowsBysex() {
return null;
}/**
-
按性别统计学生人数
-
@return 统计结果向量
*/
@Override
public Vector findRowsBySex() {
// 定义行集向量
Vector rows = new Vector();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select sex as ‘性别’, count(*) as ‘人数’”
+ " from t_student group by sex order by sex desc";
try {
// 3. 创建语句对象
Statement stmt = conn.createStatement();
// 4. 执行SQL，返回结果集
ResultSet rs = stmt.executeQuery(strSQL);
// 5. 遍历结果集
while (rs.next()) {
// 定义当前行向量
Vector currentRow = new Vector();
// 利用当前记录字段值设置当前行向量的元素值
currentRow.addElement(rs.getString(“性别”));
currentRow.addElement(rs.getInt(“人数”) + “”);
// 将当前行向量添加到行集向量
rows.addElement(currentRow);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回行集向量
return rows;
}
/**
-
按班级统计学生人数
-
@return 统计结果向量
*/
@Override
public Vector findRowsByClass() {
// 定义行集向量
Vector rows = new Vector();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select class as ‘班级’, count(*) as ‘人数’”
+ " from t_student group by class order by class desc";
try {
// 3. 创建语句对象
Statement stmt = conn.createStatement();
// 4. 执行SQL，返回结果集
ResultSet rs = stmt.executeQuery(strSQL);
// 5. 遍历结果集
while (rs.next()) {
// 定义当前行向量
Vector currentRow = new Vector();
// 利用当前记录字段值设置当前行向量的元素值
currentRow.addElement(rs.getString(“班级”));
currentRow.addElement(rs.getInt(“人数”) + “”);
// 将当前行向量添加到行集向量
rows.addElement(currentRow);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回行集向量
return rows;
}
/**
-
按系部统计学生人数
-
@return 统计结果向量
*/
@Override
public Vector findRowsByDepartment() {
// 定义行集向量
Vector rows = new Vector();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select department as ‘系部’, count(*) as ‘人数’”
+ " from t_student group by department order by department desc";
try {
// 3. 创建语句对象
Statement stmt = conn.createStatement();
// 4. 执行SQL，返回结果集
ResultSet rs = stmt.executeQuery(strSQL);
// 5. 遍历结果集
while (rs.next()) {
// 定义当前行向量
Vector currentRow = new Vector();
// 利用当前记录字段值设置当前行向量的元素值
currentRow.addElement(rs.getString(“系部”));
currentRow.addElement(rs.getInt(“人数”) + “”);
// 将当前行向量添加到行集向量
rows.addElement(currentRow);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回行集向量
return rows;
}
-
}
UserDaoImpl
package net.yh.student.dbutil.dao.impl;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.dao.UserDao;
import net.yh.student.dbutil.ConnectionManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.sql.*;
import java.util.ArrayList;
/**
-
功能：用户数据访问接口实现类
-
作者：yh
-
日期：2019年6月19日
/
public class UserDaoImpl implements UserDao {
/*-
插入用户记录
-
@param user
-
@return 插入记录数
*/
@Override
public int insert(User user) {
// 定义插入记录数
int count = 0;// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “insert into t_user (username, password, telephone, register_time)”
+ " values (?, ?, ?, ?)";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, user.getUsernname());
pstmt.setString(2, user.getPassword());
pstmt.setString(3,user.getTelephone());
pstmt.setTimestamp(4, new Timestamp(user.getRegisterTime().getTime()));
// 5. 执行SQL，返回插入记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回插入记录数
return count;
}
/**
-
按id删除用户记录
-
@param id
-
@return 删除记录数
*/
@Override
public int deleteById(int id) {
// 定义删除记录数
int count = 0;// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “delete from t_user where id = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setInt(1, id);
// 5. 执行SQL，返回删除记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回删除记录数
return count;
}
/**
-
更新用户记录
-
@param user
-
@return 更新记录数
*/
@Override
public int update(User user) {
// 定义更新记录数
int count = 0;// 1. 获得数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “update t_user set username = ?, password = ?, telephone = ?,”
+ " register_time = ? where id = ?";
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, user.getUsernname());
pstmt.setString(2, user.getPassword());
pstmt.setString(3, user.getTelephone());
pstmt.setTimestamp(4, new Timestamp(user.getRegisterTime().getTime()));
pstmt.setInt(5, user.getId());
// 5. 执行SQL，返回更新记录数
count = pstmt.executeUpdate();
// 6. 关闭预备语句对象
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回更新记录数
return count;
}
/**
-
按id查询用户
-
@param id
-
@return 用户实体
*/
@Override
public User findById(int id) {
// 声明用户对象
User user = null;// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_user where id = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setInt(1, id);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 判断结果集是否有记录
if (rs.next()) {
// 创建用户实体
user = new User();
// 利用当前记录各字段值设置用户实体属性
user.setId(rs.getInt(“id”));
user.setUsernname(rs.getString(“username”));
user.setPassword(rs.getString(“password”));
user.setTelephone(rs.getString(“telephone”));
user.setRegisterTime(rs.getTimestamp(“register_time”));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回用户对象
return user;
}
/**
-
查询所有用户
-
@return 用户列表
*/
@Override
public List findAll() {
// 声明用户列表
List users = new ArrayList();// 1. 获取数据库连接对象
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_user”;
try {
// 3. 创建语句对象
Statement stmt = conn.createStatement();
// 4. 执行SQL，返回结果集
ResultSet rs = stmt.executeQuery(strSQL);
// 5. 遍历结果集
while (rs.next()) {
// 创建用户实体
User user = new User();
// 利用当前记录各字段值设置用户实体属性
user.setId(rs.getInt(“id”));
user.setUsernname(rs.getString(“username”));
user.setPassword(rs.getString(“password”));
user.setTelephone(rs.getString(“telephone”));
user.setRegisterTime(rs.getTimestamp(“register_time”));
// 将实体添加到用户列表
users.add(user);
}
// 6. 关闭结果集
rs.close();
// 7. 关闭语句对象
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回用户列表
return users;
}
/**
-
用户登录
-
@param username
-
@param password
-
@return 登录用户实体
*/
@Override
public User login(String username, String password) {
// 声明用户对象
User user = null;// 1. 获取数据库连接
Connection conn = ConnectionManager.getConnection();
// 2. 定义SQL字符串
String strSQL = “select * from t_user where username = ? and password = ?”;
try {
// 3. 创建预备语句对象
PreparedStatement pstmt = conn.prepareStatement(strSQL);
// 4. 设置占位符的值
pstmt.setString(1, username);
pstmt.setString(2, password);
// 5. 执行SQL，返回结果集
ResultSet rs = pstmt.executeQuery();
// 6. 判断结果集是否有记录
if (rs.next()) {
// 实例化用户
user = new User();
// 利用当前记录各字段值设置用户实体属性
user.setId(rs.getInt(“id”));
user.setUsernname(rs.getString(“username”));
user.setPassword(rs.getString(“password”));
user.setTelephone(rs.getString(“telephone”));
user.setRegisterTime(rs.getTimestamp(“register_time”));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
// 关闭数据库连接
ConnectionManager.closeConnection(conn);
}// 返回用户对象
return user;}}
-
数据库连接类
package net.yh.student.dbutil;
/**
- 描述：数据库连接管理类
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;
public class ConnectionManager {
/**
* 数据库驱动程序
/
private static final String DRIVER = “com.mysql.jdbc.Driver”;
/*
* 数据库统一资源标识符
/
private static final String URL = “jdbc:mysql://localhost:3306/student”;
/*
* 数据库用户名
/
private static final String USERNAME = “root”;
/*
* 数据库密码
*/
private static final String PASSWORD = “1”;
/**
* 私有化构造方法，拒绝实例化
*/
private ConnectionManager() {
}
/**
* 获得数据库连接
*
* @return 数据库连接对象
*/
public static Connection getConnection() {
// 定义数据库连接
Connection conn = null;
try {
// 安装数据库驱动程序
Class.forName(DRIVER);
// 获得数据库连接
conn = DriverManager.getConnection(URL
+ "?useUnicode=true&characterEncoding=UTF8", USERNAME, PASSWORD);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
// 返回数据库连接
return conn;
}
/**
* 关闭数据库连接
*
* @param conn
*/
public static void closeConnection(Connection conn) {
// 判断数据库连接是否为空
if (conn != null) {
// 判断数据库连接是否关闭
try {
if (!conn.isClosed()) {
// 关闭数据库连接
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
/**
* 测试数据库连接是否成功
*
* @param args
*/
public static void main(String[] args) {
// 获得数据库连接
Connection conn = getConnection();
// 判断是否连接成功
if (conn != null) {
JOptionPane.showMessageDialog(null, "恭喜，数据库连接成功！");
} else {
JOptionPane.showMessageDialog(null, "遗憾，数据库连接失败！");
}
// 关闭数据库连接
closeConnection(conn);
}
}
创建服务类
CollegeService
package net.yh.student.dbutil.service;
import net.yh.student.dbutil.bean.College;
public interface CollegeService{
College findCollegeById(int id);
int updateCollege(College college);
}
StatusService
package net.yh.student.dbutil.service;
import net.yh.student.dbutil.bean.Status;
public interface StatusService{
Status findStatusById(int id);
int updateStatus(Status status);
}
StudentService
package net.yh.student.dbutil.service;
import net.yh.student.dbutil.bean.Student;
import java.util.List;
import java.util.Vector;
public interface StudentService{
int addStudent(Student student);
int deleteStudentById(String id);
int deleteStudentsByClass(String clazz);
int deleteStudentsByDepartment(String department);
int updateStudent(Student student);
Student findStudentById(String id);
ListfindStudentsByName(String name);
ListfindStudentsByClass(String clazz);
ListfindStudentsByDepartment(String Department);
ListfindAllStudents();
Vector findRowByClass();
Vector findRowByDepartment();
Vector findRowsBySex();
Vector findRowsByClass();
Vector findRowsByDepartment();
}
UserService
package net.yh.student.dbutil.service;
import net.yh.student.dbutil.bean.User;
import java.util.List;
public interface UserService{
int addUser(User user);
int deleteUserById(int id);
int updateUser(User user);
User findUserById(int id);
List findAllUsers();
User login(String username, String password);
}
创建测试类
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.dao.CollegeDao;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class TestCollegeDaoImpl {
@Before
public void beforeTest(){
System.out.println(“单元测试开始了~”);
}
@Test
public void testFindByID(){
CollegeDao dao =new net.yh.student.dbutil.dao.impl.CollegeDaoImpl();
net.yh.student.dbutil.bean.College college=dao.findById(1);
System.out.println(college);
}
@Test
public void testUpdate(){
CollegeDao dao =new net.yh.student.dbutil.dao.impl.CollegeDaoImpl();
net.yh.student.dbutil.bean.College college=dao.findById(1);
college.setPresident("王洪礼");
dao.update(college);
college=dao.findById(1);
System.out.println(college);
}
@After
public void afterTest(){
System.out.println("单元测试结束~");
}
}
测试结果
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.College;
import net.yh.student.dbutil.service.CollegeService;
import net.yh.student.dbutil.service.impl.CollegeServiceImpl;
import org.junit.Test;
public class TestCollegeServiceImpl {
@Test
public void testFindCollegeById(){
CollegeService service=new CollegeServiceImpl();
College college=service.findCollegeById(1);
System.out.println(college);
}
@Test
public void testUpdateCollege(){
CollegeService service=new CollegeServiceImpl();
College college=service.findCollegeById(1);
college.setPresident("王洪礼");
college.setTelephone("3152639");
int count=service.updateCollege(college);
if (count>0){
System.out.println("恭喜，学校记录更新成功");
college=service.findCollegeById(1);
System.out.println(college);
}else {
System.out.println("遗憾，学校记录更新失败");
}
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.dao.StatusDao;
import net.yh.student.dbutil.bean.Status;
import net.yh.student.dbutil.dao.impl.StatusDaoImpl;
import org.junit.Test;
public class TestStatusDaoImpl {
@Test
public void testFindById(){
StatusDao dao=new net.yh.student.dbutil.dao.impl.StatusDaoImpl();
Status status=dao.findById(1);
System.out.println(status);
}
@Test
public void testUpdate(){
StatusDao dao =new StatusDaoImpl();
Status status=dao.findById(1);
status.setAuthor("yh");
status.setTelephone("1558388****");
status.setEmail("[email protected]");
dao.update(status);
status=dao.findById(1);
System.out.println(status);
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.Status;
import net.yh.student.dbutil.service.StatusService;
import net.yh.student.dbutil.service.impl.StatusServiceImpl;
import org.junit.Test;
public class TestStatusServicelmpl {
@Test
public void testFindStatuById(){
StatusService service=new StatusServiceImpl();
Status status=service.findStatusById(1);
System.out.println(status);
}
@Test
public void testUpdateStatus(){
StatusService service=new StatusServiceImpl();
Status status=service.findStatusById(1);
status.setAuthor("YH");
status.setTelephone("1500001111");
int count =service.updateStatus(status);
if(count>0){
System.out.println("恭喜，状态记录更新成功");
status=service.findStatusById(1);
System.out.println(status);
}else {
System.out.println("遗憾，状态信息更新失败");
}
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.dao.StudentDao;
import net.yh.student.dbutil.dao.impl.StudentDaoImpl;
import org.junit.Test;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
public class TestStudentDaoImpl {
@Test
public void testInsert(){
Student student=new Student();
student.setId(“18101001”);
student.setName(“唐鹏”);
student.setSex(“男”);
student.setAge(19);
student.setDepartment(“信息工程系”);
student.setClazz(“18大数据1班”);
student.setTelephone(“12345678901”);
StudentDao dao=new StudentDaoImpl();
int count=dao.insert(student);
if (count>0){
System.out.println("恭喜，插入成功");
}else {
System.out.println("遗憾，插入失败");
}
}
@Test
public void testDeleteById(){
StudentDao dao=new StudentDaoImpl();
String id="18101001";
int count=dao.deleteById(id);
if (count>0){
System.out.println("恭喜，学生记录删除成功");
}else{
System.out.println("遗憾，学生记录删除失败");
}
}
@Test
public void testDeleteByClass(){
StudentDao dao =new StudentDaoImpl() {
@Override
public List findByDepartment(String department) {
return null;
}
};
String clazz="10英教1班";
int count=dao.deleteByClass(clazz);
if (count>0){
System.out.println("恭喜，["+clazz+"]学生记录删除成功");
}else {
System.out.println("遗憾，["+clazz+"]学生记录删除失败");
}
}
@Test
public void testFindByName(){
StudentDao dao = new StudentDaoImpl() {
};
String name="很";
Liststudents=dao.findByName(name);
if (students.size()>0){
for (Student student:students){
System.out.println(student);}
} else {
System.out.println("温馨提示：查无此人");
}
}
@Test
public void testFindRowsBysex(){
StudentDao dao=new StudentDaoImpl();
Vector rows=dao.findRowsBysex();
Iterator iterator=rows.iterator();
while (iterator.hasNext()){
System.out.println(iterator.next());
}
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import org.junit.Test;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
public class TestStudentServiceImpl {
@Test
public void TestInsert(){
Student student = new Student();
student.setId(“18201013”);
student.setName(“刘瑶”);
student.setSex(“女”);
student.setAge(20);
student.setClazz(“18软件3班”);
student.setDepartment(“信息工程学院”);
student.setTelephone(“15228054257”);
StudentServiceImpl service = new StudentServiceImpl();
int count = service.addStudent(student);
if (count > 0){
System.out.println("记录插入成功");
}else {
System.out.println("记录插入失败");
}
}
@Test
public void TestDeleteById(){
StudentServiceImpl service = new StudentServiceImpl();
String id = "11040202";
int count = service.deleteStudentById(id);
if (count > 0){
System.out.println("删除失败");
}else {
System.out.println("删除成功");
}
}
@Test
public void TestDeleteByClass(){
StudentServiceImpl service = new StudentServiceImpl();
String class01 = "11040202";
int count = service.deleteStudentsByClass(class01);
if (count > 0){
System.out.println("删除失败");
}else {
System.out.println("删除成功");
}
}
@Test
public void TestFIndById(){
StudentService service = new StudentServiceImpl();
Student student = service.findStudentById("11040204");
System.out.println(student);
}
@Test
public void TestFindByName(){
StudentServiceImpl service = new StudentServiceImpl();
String name = "李";
List students = service.findStudentsByName(name);
if (students.size()>0){
for (Student student:students){
System.out.println(student);
}
}else {
System.out.println("查无此人");
}
}
@Test
public void TestFindByDeoartment(){
StudentServiceImpl service = new StudentServiceImpl();
String department = "信息工程系";
List students = service.findStudentsByDepartment(department);
if (students.size() > 0) {
for (Student student : students) {
System.out.println(student);
}
} else
System.out.println("查找失败");
}
@Test
public void testUpdate(){
StudentServiceImpl service = new StudentServiceImpl();
Student student = service.findStudentById("10080301");
student.setName("huang");
service.updateStudent(student);
student = service.findStudentById("10080301");
System.out.println(student);
}
@Test
public void TestFindRowsBySex(){
StudentServiceImpl service = new StudentServiceImpl();
Vector rows = service.findRowsBySex();
Iterator iterator = rows.iterator();
while (iterator.hasNext()){
System.out.println(iterator.next());
}
}
@Test
public void findByClass() {
StudentServiceImpl service = new StudentServiceImpl();
String class01 = "11建工";
List students = service.findStudentsByClass(class01);
if (students.size() > 0) {
for (Student student : students) {
System.out.println(student);
}
} else
System.out.println("查无此班");
}
@Test
public void findAll() {
StudentServiceImpl service = new StudentServiceImpl();
List students = service.findAllStudents();
if (students.size() > 0) {
for (Student student : students) {
System.out.println(student);
}
} else
System.out.println("查找失败");
}
@Test
public void TestFindRowsByClass(){
StudentServiceImpl service = new StudentServiceImpl();
Vector rows = service.findRowsByClass();
Iterator iterator = rows.iterator();
while (iterator.hasNext()){
System.out.println(iterator.next());
}
}
@Test
public void TestFindRowsByDepartment(){
StudentServiceImpl service = new StudentServiceImpl();
Vector rows = service.findRowsByDepartment();
Iterator iterator = rows.iterator();
while (iterator.hasNext()){
System.out.println(iterator.next());
}
}
private class Vectors {
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.dao.UserDao;
import net.yh.student.dbutil.dao.impl.UserDaoImpl;
import org.junit.Test;
public class TestUserDaoImpl {
@Test
public void testFindById(){
UserDao dao=new UserDaoImpl();
User user=dao.findById(1);
System.out.println(user);
}
// @Test
// public void testLogin(){
// UserDao dao=new UserDaoImpl();
// String username,password;
//
// username=“admin”;
// password=“12345”;
// User user=dao.login(username,password);
// if(user!=null){
// System.out.println(“恭喜，用户名与密码正确，登录成功”);
//
// }else {
// System.out.println(“遗憾，用户名或密码错误，登录失败”);
// }
// }
@Test
public void testLogin(){
UserDao dao=new UserDaoImpl();
String username,password;
username="howard";
password="12345";
User user=dao.login(username,password);
if(user!=null){
System.out.println("恭喜，用户名与密码正确，登录成功");
}else {
System.out.println("遗憾，用户名或密码错误，登录失败");
}
}
}
package net.yh.student.dbutil.test;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.service.UserService;
import net.yh.student.dbutil.service.impl.UserServiceImpl;
import org.junit.Test;
public class TestUserServiceImpl {
@Test
public void testLogin(){
UserService service=new UserServiceImpl();
String username,password;
username="admin";
password="12345";
User user=service.login(username,password);
if (user !=null){
System.out.println("恭喜，用户名与密码正确，登录成功");
}else {
System.out.println("遗憾，用户名或密码错误，登录失败");
}
}
}
GUI 界面部分
AddStudentFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.util.List;
public class AddStudentFrame extends JFrame {
/**
* 声明面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
/**
* 声明标签
*/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/**
* 声明文本框
*/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/**
* 声明按钮
*/
private JButton btnExit;
private JButton btnOK;
private JButton btnCancel;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 构造方法
*
* @param title
*/
public AddStudentFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号：");
lblName = new JLabel("姓名：");
lblSex = new JLabel("性别：");
lblAge = new JLabel("年龄：");
lblDepartment = new JLabel("系部：");
lblClass = new JLabel("班级：");
lblTelephone = new JLabel("电话：");
txtId = new JTextField(20);
txtName = new JTextField(20);
txtSex = new JTextField(20);
txtAge = new JTextField(20);
txtDepartment = new JTextField(20);
txtClass = new JTextField(20);
txtTelephone = new JTextField(20);
btnOK = new JButton("确定[O]");
btnCancel = new JButton("取消[C]");
btnExit = new JButton("退出[X]");
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel.setMnemonic(KeyEvent.VK_C);
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7, 1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(btnOK);
pnlSouth.add(btnCancel);
pnlSouth.add(btnExit);
// 设置窗口属性
setResizable(false);
pack();
setLocationRelativeTo(null);
setVisible(true);
// 【确定】按钮单击事件
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 创建学生对象
Student student = new Student();
student.setId(txtId.getText().trim());
student.setName(txtName.getText().trim());
student.setSex(txtSex.getText().trim());
student.setAge(Integer.parseInt(txtAge.getText()));
student.setDepartment(txtDepartment.getText().trim());
student.setClazz(txtClass.getText().trim());
student.setTelephone(txtTelephone.getText().trim());
// 创建学生服务对象
StudentService studentService = new StudentServiceImpl() {
};
// 添加学生记录
int count = studentService.addStudent(student);
// 判断是否添加成功
if (count > 0) {
JOptionPane.showMessageDialog(null, "添加记录成功！", "增加学生记录", JOptionPane.INFORMATION_MESSAGE);
txtId.setText("");
txtName.setText("");
txtSex.setText("");
txtAge.setText("");
txtDepartment.setText("");
txtClass.setText("");
txtTelephone.setText("");
txtId.requestFocus();
} else {
JOptionPane.showMessageDialog(null, "添加记录失败！", "增加学生记录", JOptionPane.ERROR_MESSAGE);
}
}
});
txtId.addFocusListener(new FocusListener() {
@Override
public void focusLost(FocusEvent e) {
if (txtId.getText().trim().equals("")) {
JOptionPane.showMessageDialog(null, "学号不能为空！", "增加学生记录", JOptionPane.WARNING_MESSAGE);
txtId.requestFocus();
}
}
@Override
public void focusGained(FocusEvent e) {
}
});
txtAge.addFocusListener(new FocusListener() {
@Override
public void focusLost(FocusEvent e) {
if (!isNumber(txtAge.getText().trim())) {
JOptionPane.showMessageDialog(null, "注意：年龄全由数字构成！", "增加学生记录", JOptionPane.WARNING_MESSAGE);
txtAge.setText("");
txtAge.requestFocus();
}
}
@Override
public void focusGained(FocusEvent e) {
}
});
// 【取消】按钮单击事件
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
txtId.setText("");
txtName.setText("");
txtSex.setText("");
txtAge.setText("");
txtDepartment.setText("");
txtClass.setText("");
txtTelephone.setText("");
txtId.requestFocus();
}
});
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
// 文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
if (!txtId.getText().trim().equals("")) {
txtName.requestFocus();
}
}
}
});
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtSex.requestFocus();
}
}
});
txtSex.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtAge.requestFocus();
}
}
});
txtAge.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtDepartment.requestFocus();
}
}
});
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtClass.requestFocus();
}
}
});
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtTelephone.requestFocus();
}
}
});
}
/**
* 判断一个字符串是否全是数字
*
* @param str
* @return
*/
boolean isNumber(String str) {
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) < '0' || str.charAt(i) > '9') {
return false;
}
}
return true;
}
public static void main(String[] args) {
new AddStudentFrame("");
}
}
BrowseStudentsFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.List;
import java.util.Vector;
public class BrowseStudentsFrame extends JFrame {
/**
* 声明面板
/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
/*
* 声明标签
/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/*
* 声明文本框
/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/*
* 声明按钮
*/
private JButton btnTop;
private JButton btnPrevious;
private JButton btnNext;
private JButton btnBottom;
private JButton btnExit;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public BrowseStudentsFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号：");
lblName = new JLabel("姓名：");
lblSex = new JLabel("性别：");
lblAge = new JLabel("年龄：");
lblDepartment = new JLabel("系部：");
lblClass = new JLabel("班级：");
lblTelephone = new JLabel("电话：");
txtId = new JTextField(40);
txtName = new JTextField(40);
txtSex = new JTextField(40);
txtAge = new JTextField(40);
txtDepartment = new JTextField(40);
txtClass = new JTextField(40);
txtTelephone = new JTextField(40);
txtId.setEditable(false);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
btnTop = new JButton("第一条[T]");
btnPrevious = new JButton("上一条[P]");
btnNext = new JButton("下一条[N]");
btnBottom = new JButton("最后一条[B]");
btnExit = new JButton("退出[X]");
btnTop.setMnemonic(KeyEvent.VK_T);
btnPrevious.setMnemonic(KeyEvent.VK_P);
btnNext.setMnemonic(KeyEvent.VK_N);
btnBottom.setMnemonic(KeyEvent.VK_B);
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7, 1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(btnTop);
pnlSouth.add(btnPrevious);
pnlSouth.add(btnNext);
pnlSouth.add(btnBottom);
pnlSouth.add(btnExit);
// 设置窗口属性
setSize(500, 300);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口刚好容纳组件
pack();
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取全部学生列表
students = studentService.findAllStudents();
// 判断是否有学生记录
if (students.size() > 0) {
// 设置当前记录号
currentRow = 1;
// 设置窗口标题
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
// 填充窗口各文本框数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "表中没有记录！", "浏览学生表记录", JOptionPane.ERROR_MESSAGE);
btnTop.setEnabled(false);
btnPrevious.setEnabled(false);
btnNext.setEnabled(false);
btnBottom.setEnabled(false);
}
// 【第一条】按钮单击事件
btnTop.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【上一条】按钮单击事件
btnPrevious.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow > 1) {
// 设置当前记录号
currentRow--;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到第一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【下一条】按钮单击事件
btnNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow < students.size() - 1) {
// 设置当前记录号
currentRow++;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到最后一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【最后一条】按钮单击事件
btnBottom.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = students.size() - 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
}
/**
* 将当前记录数据填充窗口各文本框
*
* @param currentRow
*/
private void fillFrameData(int currentRow) {
if (currentRow > 0) {
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
txtId.setText(students.get(currentRow).getId());
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new BrowseStudentsFrame("");
}
}
ChangePasswordFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.app.Application;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.service.UserService;
import net.yh.student.dbutil.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
public class ChangePasswordFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
/**
* 标签
*/
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblNewPassword1;
private JLabel lblNewPassword2;
/**
* 文本框
*/
private JTextField txtUsername;
private JPasswordField txtPassword;
private JPasswordField txtNewPassword1;
private JPasswordField txtNewPassword2;
/**
* 按钮
*/
private JButton btnOK;
private JButton btnCancel;
/**
* 学生管理应用程序
*/
private static Application app;
/**
* 创建用户服务对象
*/
private UserService userService;
public ChangePasswordFrame(String title) {
super(title);
// 初始化用户界面
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
lblUsername = new JLabel("用户名：");
lblPassword = new JLabel("旧密码：");
lblNewPassword1 = new JLabel("新密码：");
lblNewPassword2 = new JLabel("确 认：");
txtUsername = new JTextField(20);
txtUsername.setEditable(false);
txtPassword = new JPasswordField(20);
txtNewPassword1 = new JPasswordField(20);
txtNewPassword2 = new JPasswordField(20);
btnOK = new JButton("确定[O]");
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel = new JButton("取消[C]");
btnCancel.setMnemonic(KeyEvent.VK_C);
// 添加组件
panel.setLayout(new GridLayout(5, 1));
panel.add(pnlRow1);
panel.add(pnlRow2);
panel.add(pnlRow3);
panel.add(pnlRow4);
panel.add(pnlRow5);
pnlRow1.add(lblUsername);
pnlRow1.add(txtUsername);
pnlRow2.add(lblPassword);
pnlRow2.add(txtPassword);
pnlRow3.add(lblNewPassword1);
pnlRow3.add(txtNewPassword1);
pnlRow4.add(lblNewPassword2);
pnlRow4.add(txtNewPassword2);
pnlRow5.add(btnOK);
pnlRow5.add(btnCancel);
// 设置窗口属性
pack();
setVisible(true);
setResizable(false);
pack();
setLocationRelativeTo(null);
// 设置控件属性
txtUsername.setEditable(false);
txtUsername.setText(Application.username);
// 注册监听器，实现监听器接口，编写事件处理代码
// 取消按钮单击事件
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
// 确定按钮单击事件
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
changePassword();
}
});
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
dispose();
}
});
txtUsername.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtPassword.requestFocus();
}
}
});
txtPassword.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtNewPassword1.requestFocus();
}
}
});
txtNewPassword1.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtNewPassword2.requestFocus();
}
}
});
txtNewPassword2.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
btnOK.requestFocus();
}
}
});
btnOK.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
changePassword();
}
}
});
}
/**
* 修改密码的方法
*/
private void changePassword() {
int id = Application.id;
String username = Application.username;
String password = new String(txtPassword.getPassword());
String newPassword1 = new String(txtNewPassword1.getPassword());
String newPassword2 = new String(txtNewPassword2.getPassword());
// 创建学生服务对象
userService = new UserServiceImpl();
if (userService.login(username, password) == null) {
JOptionPane.showMessageDialog(null, "旧密码错误，请重新输入！", "错误提示", JOptionPane.ERROR_MESSAGE);
txtPassword.requestFocus();
txtPassword.selectAll();
} else if (newPassword1.equals("")) {
JOptionPane.showMessageDialog(null, "新密码不能为空！", "错误提示", JOptionPane.ERROR_MESSAGE);
txtNewPassword1.requestFocus();
} else if (newPassword2.equals("")) {
JOptionPane.showMessageDialog(null, "确认密码不能为空！", "错误提示", JOptionPane.ERROR_MESSAGE);
txtNewPassword2.requestFocus();
} else if (!newPassword1.equals(newPassword2)) {
JOptionPane.showMessageDialog(null, "两次密码不一致，请重新输入！", "错误提示", JOptionPane.ERROR_MESSAGE);
txtNewPassword1.setText("");
txtNewPassword2.setText("");
txtNewPassword1.requestFocus();
} else {
// 按标识符获取用户
User user = userService.findUserById(id);
System.out.println(user);
// 修改密码
user.setPassword(newPassword1);
// 更新用户信息
int count = userService.updateUser(user);
if (count > 0) {
JOptionPane.showMessageDialog(null, "密码修改成功！", "设置密码", JOptionPane.INFORMATION_MESSAGE);
dispose();
} else {
JOptionPane.showMessageDialog(null, "密码修改失败！", "设置密码", JOptionPane.WARNING_MESSAGE);
}
}
}
public static void main(String[] args) {
Application.id=1;
Application.username="李刚";
new ChangePasswordFrame("");
}
}
CountStudentsByClassFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
public class CountStudentsByClassFrame extends JFrame {
/**
* 面板
/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/*
* 按钮
/
private JButton btnPrint;
private JButton btnExit;
/*
* 记录行集
/
private Vector rows;
/*
* 表格列标题
/
private Vector colHead;
/*
* 表格
/
private JTable table;
/*
* 滚动面板
/
private JScrollPane scroller;
/*
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsByClassFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取按班级统计结果记录行集
rows = studentService.findRowsByClass();
// 设置表头
colHead.add("班级");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口大小
setSize(300, 200);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new CountStudentsByClassFrame("");
}}
CountStudentsByDepartmentFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
public class CountStudentsByDepartmentFrame extends JFrame {
/**
* 面板
/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/*
* 按钮
/
private JButton btnPrint;
private JButton btnExit;
/*
* 记录行集
/
private Vector rows;
/*
* 表格列标题
/
private Vector colHead;
/*
* 表格
/
private JTable table;
/*
* 滚动面板
/
private JScrollPane scroller;
/*
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsByDepartmentFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl();
// 获取按系部统计结果记录行集
rows = studentService.findRowsByDepartment();
// 设置表头
colHead.add("系部");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口大小
setSize(300, 200);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("按班级统计学生人数");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new CountStudentsByDepartmentFrame("");
}
}
CountStudentsBySexFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.print.PrinterException;
import java.util.Vector;
public class CountStudentsBySexFrame extends JFrame {
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
/**
* 按钮
*/
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 创建学生服务对象
*/
private StudentService studentService;
public CountStudentsBySexFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_P);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
TitledBorder tb = new TitledBorder("统计结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取按性别统计结果记录行集
rows = studentService.findRowsBySex();
// 设置表头
colHead.add("性别");
colHead.add("人数");
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
pnlCenter.add(scroller, BorderLayout.CENTER);
repaint(); // 重绘窗体
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
// 设置窗口属性
setSize(300, 200);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
}
public static void main(String[] args) {
new CountStudentsBySexFrame("");
}
}
DeleteStudentByidFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
public class DeleteStudentByIdFrame extends JFrame {
/**
* 学号标签
/
private JLabel lblInputId;
/*
* 学号文本框
*/
private JTextField txtId;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentByIdFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputId = new JLabel("输入学号：");
txtId = new JTextField(10);
txtId.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputId);
pnlNorth.add(txtId);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删学生学号
String id = txtId.getText().trim();
// 按学号删除学生
int count = studentService.deleteStudentById(id);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删学生学号文本框
txtId.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtId.setText(table.getValueAt(row, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String id = txtId.getText().trim();
if (!id.equals("")) {
students.clear();
Student student = studentService.findStudentById(id);
if (student != null) {
// 将查询到的学生添加到列表
students.add(student);
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
txtId.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtId.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new DeleteStudentByIdFrame("");
}
}
deletestudentByclassFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
public class DeleteStudentsByClassFrame extends JFrame {
/**
* 班级标签
/
private JLabel lblInputClass;
/*
* 班级文本框
*/
private JTextField txtClass;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentsByClassFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputClass = new JLabel("输入班级：");
txtClass = new JTextField(10);
txtClass.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputClass);
pnlNorth.add(txtClass);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删班级
String clazz = txtClass.getText().trim();
// 按班级删除学生
int count = studentService.deleteStudentsByClass(clazz);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删班级文本框
txtClass.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 文本框按键事件
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtClass.setText(table.getValueAt(row, 5).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询班级
String clazz = txtClass.getText().trim();
if (!clazz.equals("")) {
students = studentService.findStudentsByClass(clazz);
if (students.size() > 0) {
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查班级！", "警告", JOptionPane.WARNING_MESSAGE);
txtClass.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtClass.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new DeleteStudentsByClassFrame("");
}
}
deleteStudentBydepartmentFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.util.List;
import java.util.Vector;
public class DeleteStudentsByDepartmentFrame extends JFrame {
/**
* 系部标签
/
private JLabel lblInputDepartment;
/*
* 系部文本框
*/
private JTextField txtDepartment;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnDelete;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public DeleteStudentsByDepartmentFrame(String title) {
super(title);
intiGUI();
}
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputDepartment = new JLabel("输入系部：");
txtDepartment = new JTextField(10);
txtDepartment.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnDelete = new JButton("删除查询的记录[D]");
btnDelete.setEnabled(false);// 删除按钮不可用
btnDelete.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputDepartment);
pnlNorth.add(txtDepartment);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnDelete);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【删除】按钮单击事件
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!rows.isEmpty()) {
long choice = JOptionPane.showConfirmDialog(null, "是否要删除记录？");
if (choice == JOptionPane.OK_OPTION) {
// 获取待删系部
String department = txtDepartment.getText().trim();
// 按系部删除学生
int count = studentService.deleteStudentsByDepartment(department);
if (count > 0) {
JOptionPane.showMessageDialog(null, "记录删除成功！", "提示", JOptionPane.INFORMATION_MESSAGE);
// 重新获取全部学生列表
students = studentService.findAllStudents();
// 清空待删班级文本框
txtDepartment.setText("");
// 填充数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
} else {
JOptionPane.showMessageDialog(null, "记录删除失败！", "警告", JOptionPane.WARNING_MESSAGE);
}
}
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnDelete.setEnabled(false);
}
});
// 文本框按键事件
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtDepartment.setText(table.getValueAt(row, 4).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询系部
String department = txtDepartment.getText().trim();
if (!department.equals("")) {
students = studentService.findStudentsByDepartment(department);
if (students.size() > 0) {
// 让删除按钮可用
btnDelete.setEnabled(true);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查系部！", "警告", JOptionPane.WARNING_MESSAGE);
txtDepartment.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtDepartment.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new DeleteStudentsByDepartmentFrame("");
}
}
EditStudentFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.List;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class EditStudentFrame extends JFrame {
/**
* 声明面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
private JPanel pnlRow6;
private JPanel pnlRow7;
private JPanel pnlSouth;
private JPanel pnlSouth1;
private JPanel pnlSouth2;
/**
* 声明标签
*/
private JLabel lblId;
private JLabel lblName;
private JLabel lblSex;
private JLabel lblAge;
private JLabel lblDepartment;
private JLabel lblClass;
private JLabel lblTelephone;
/**
* 声明文本框
*/
private JTextField txtId;
private JTextField txtName;
private JTextField txtSex;
private JTextField txtAge;
private JTextField txtDepartment;
private JTextField txtClass;
private JTextField txtTelephone;
/**
* 声明按钮
*/
private JButton btnTop;
private JButton btnPrevious;
private JButton btnNext;
private JButton btnBottom;
private JButton btnExit;
private JButton btnEdit;
private JButton btnOK;
private JButton btnCancel;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private Liststudents;
/**
* 创建学生服务对象
*/
StudentService studentService;
// 构造方法
public EditStudentFrame(String title) {
super(title);
initGUI();
}
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlSouth.setLayout(new GridLayout(2, 1));
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();
pnlRow6 = new JPanel();
pnlRow7 = new JPanel();
pnlSouth1 = new JPanel();
pnlSouth2 = new JPanel();
pnlRow1.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow2.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow3.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow4.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow5.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow6.setLayout(new FlowLayout(FlowLayout.LEFT));
pnlRow7.setLayout(new FlowLayout(FlowLayout.LEFT));
lblId = new JLabel("学号：");
lblName = new JLabel("姓名：");
lblSex = new JLabel("性别：");
lblAge = new JLabel("年龄：");
lblDepartment = new JLabel("系部：");
lblClass = new JLabel("班级：");
lblTelephone = new JLabel("电话：");
txtId = new JTextField(40);
txtName = new JTextField(40);
txtSex = new JTextField(40);
txtAge = new JTextField(40);
txtDepartment = new JTextField(40);
txtClass = new JTextField(40);
txtTelephone = new JTextField(40);
txtId.setEditable(false);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
btnTop = new JButton("第一条[T]");
btnPrevious = new JButton("上一条[P]");
btnNext = new JButton("下一条[N]");
btnBottom = new JButton("最后一条[B]");
btnExit = new JButton("退出[X]");
btnEdit = new JButton("编辑[E]");
btnOK = new JButton("确定[O]");
btnCancel = new JButton("取消[C]");
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnTop.setMnemonic(KeyEvent.VK_T);
btnPrevious.setMnemonic(KeyEvent.VK_P);
btnNext.setMnemonic(KeyEvent.VK_N);
btnBottom.setMnemonic(KeyEvent.VK_B);
btnExit.setMnemonic(KeyEvent.VK_X);
btnEdit.setMnemonic(KeyEvent.VK_E);
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel.setMnemonic(KeyEvent.VK_C);
// 添加组件
panel.setLayout(new BorderLayout());
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlSouth, BorderLayout.SOUTH);
pnlCenter.setLayout(new GridLayout(7, 1));
pnlCenter.add(pnlRow1);
pnlCenter.add(pnlRow2);
pnlCenter.add(pnlRow3);
pnlCenter.add(pnlRow4);
pnlCenter.add(pnlRow5);
pnlCenter.add(pnlRow6);
pnlCenter.add(pnlRow7);
pnlRow1.add(lblId);
pnlRow1.add(txtId);
pnlRow2.add(lblName);
pnlRow2.add(txtName);
pnlRow3.add(lblSex);
pnlRow3.add(txtSex);
pnlRow4.add(lblAge);
pnlRow4.add(txtAge);
pnlRow5.add(lblDepartment);
pnlRow5.add(txtDepartment);
pnlRow6.add(lblClass);
pnlRow6.add(txtClass);
pnlRow7.add(lblTelephone);
pnlRow7.add(txtTelephone);
pnlSouth.add(pnlSouth1);
pnlSouth.add(pnlSouth2);
pnlSouth1.add(btnTop);
pnlSouth1.add(btnPrevious);
pnlSouth1.add(btnNext);
pnlSouth1.add(btnBottom);
pnlSouth1.add(btnExit);
pnlSouth2.add(btnEdit);
pnlSouth2.add(btnOK);
pnlSouth2.add(btnCancel);
// 设置窗口属性
setSize(500, 300);
setResizable(false);
pack();
setLocationRelativeTo(null);
setVisible(true);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 判断是否有学生记录
if (students.size() > 0) {
// 设置当前记录号
currentRow = 1;
// 设置窗口标题
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
// 填充窗口各文本框数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "表中没有记录！", "浏览学生表记录", JOptionPane.ERROR_MESSAGE);
btnTop.setEnabled(false);
btnPrevious.setEnabled(false);
btnNext.setEnabled(false);
btnBottom.setEnabled(false);
}
// 【第一条】按钮单击事件
btnTop.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【上一条】按钮单击事件
btnPrevious.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow > 1) {
// 设置当前记录号
currentRow--;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到第一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【下一条】按钮单击事件
btnNext.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (currentRow < students.size() - 1) {
// 设置当前记录号
currentRow++;
// 填充当前记录数据
fillFrameData(currentRow);
} else {
JOptionPane.showMessageDialog(null, "已到最后一条记录！", "浏览学生表记录", JOptionPane.WARNING_MESSAGE);
}
}
});
// 【最后一条】按钮单击事件
btnBottom.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 设置当前记录号
currentRow = students.size() - 1;
// 填充当前记录数据
fillFrameData(currentRow);
}
});
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});
// 【编辑】按钮单击事件
btnEdit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
txtName.setEditable(true);
txtSex.setEditable(true);
txtAge.setEditable(true);
txtDepartment.setEditable(true);
txtClass.setEditable(true);
txtTelephone.setEditable(true);
btnOK.setEnabled(true);
btnCancel.setEnabled(true);
}
});
// 【确定】按钮单击事件
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 获取当前学生实体
Student student = students.get(currentRow);
if (isNumber(txtAge.getText())) {
if (isLegalTelephone(txtTelephone.getText())) {
// 修改学生实体属性
student.setName(txtName.getText());
student.setSex(txtSex.getText());
student.setAge(Integer.parseInt(txtAge.getText()));
student.setDepartment(txtDepartment.getText());
student.setClazz(txtClass.getText());
student.setTelephone(txtTelephone.getText());
// 更新学生信息
int count = studentService.updateStudent(student);
// 判断是否更新成功
if (count > 0) {
JOptionPane.showMessageDialog(null, "更新记录成功！", "编辑学生记录", JOptionPane.INFORMATION_MESSAGE);
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnEdit.setEnabled(true);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
// 重新获取全部学生列表
students = studentService.findAllStudents();
} else {
JOptionPane.showMessageDialog(null, "更新记录失败！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(null, "非法手机号！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
txtTelephone.selectAll();
txtTelephone.requestFocus();
}
} else {
JOptionPane.showMessageDialog(null, "年龄必须是数字！", "编辑学生记录", JOptionPane.ERROR_MESSAGE);
txtAge.selectAll();
txtAge.requestFocus();
}
}
});
// 【取消】按钮单击事件
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
btnOK.setEnabled(false);
btnCancel.setEnabled(false);
btnEdit.setEnabled(true);
txtName.setEditable(false);
txtSex.setEditable(false);
txtAge.setEditable(false);
txtDepartment.setEditable(false);
txtClass.setEditable(false);
txtTelephone.setEditable(false);
// 恢复文本框修改前的值
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
});
// 文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtName.requestFocus();
}
}
});
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtSex.requestFocus();
}
}
});
txtSex.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtAge.requestFocus();
}
}
});
txtAge.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtDepartment.requestFocus();
}
}
});
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtClass.requestFocus();
}
}
});
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtTelephone.requestFocus();
}
}
});
}
/**
* 将当前记录数据填充窗口各文本框
*
* @param currentRow
*/
private void fillFrameData(int currentRow) {
if (currentRow > 0) {
setTitle("浏览学生表记录" + " && 当前记录：" + currentRow);
txtId.setText(students.get(currentRow).getId());
txtName.setText(students.get(currentRow).getName());
txtSex.setText(students.get(currentRow).getSex());
txtAge.setText(students.get(currentRow).getAge() + "");
txtDepartment.setText(students.get(currentRow).getDepartment());
txtClass.setText(students.get(currentRow).getClazz());
txtTelephone.setText(students.get(currentRow).getTelephone());
}
}
// 判断一个字符串是否全是数字
private boolean isNumber(String str) {
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) < '0' || str.charAt(i) > '9') {
return false;
}
}
return true;
}
/**
* 判断是否合法手机号
*
* @param telephone
* @return
*/
private boolean isLegalTelephone(String telephone) {
Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0-9]))\\d{8}$");
Matcher m = p.matcher(telephone);
return m.matches();
}
public static void main(String[] args) {
new EditStudentFrame("");
}
}
FindStudentByIdFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
public class FindStudentByIdFrame extends JFrame {
/**
* 学号标签
/
private JLabel lblInputId;
/*
* 学号文本框
*/
private JTextField txtId;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentByIdFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputId = new JLabel("输入学号：");
txtId = new JTextField(10);
txtId.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputId);
pnlNorth.add(txtId);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 删除按钮不可用
btnPrint.setEnabled(false);
}
});
// 文本框按键事件
txtId.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtId.setText(table.getValueAt(row, 0).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询学号
String id = txtId.getText().trim();
if (!id.equals("")) {
students.clear();
Student student = studentService.findStudentById(id);
if (student != null) {
// 将查询到的学生添加到列表
students.add(student);
}
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生学号！", "警告", JOptionPane.WARNING_MESSAGE);
txtId.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtId.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new FindStudentByIdFrame("");
}
}
FindStudentByNameFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
public class FindStudentByNameFrame extends JFrame {
/**
* 姓名标签
/
private JLabel lblInputName;
/*
* 姓名文本框
*/
private JTextField txtName;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentByNameFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputName = new JLabel("输入姓名：");
txtName = new JTextField(10);
txtName.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputName);
pnlNorth.add(txtName);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 文本框按键事件
txtName.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtName.setText(table.getValueAt(row, 1).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询姓名
String name = txtName.getText().trim();
if (!name.equals("")) {
// 按姓名查询获取学生列表
students = studentService.findStudentsByName(name);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查学生姓名！", "警告", JOptionPane.WARNING_MESSAGE);
txtName.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtName.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new FindStudentByNameFrame("");
}
}
FindStudentsByClassFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
public class FindStudentsByClassFrame extends JFrame {
/**
* 班级标签
/
private JLabel lblInputClass;
/*
* 班级文本框
*/
private JTextField txtClass;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private Liststudents;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentsByClassFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputClass = new JLabel("输入班级：");
txtClass = new JTextField(10);
txtClass.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputClass);
pnlNorth.add(txtClass);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 文本框按键事件
txtClass.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtClass.setText(table.getValueAt(row, 5).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询班级
String clazz = txtClass.getText().trim();
if (!clazz.equals("")) {
// 按班级查询获取学生列表
students = studentService.findStudentsByClass(clazz);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查班级！", "警告", JOptionPane.WARNING_MESSAGE);
txtClass.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtClass.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new FindStudentsByClassFrame("");
}
}
FindStudentsBydepartmentFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.Student;
import net.yh.student.dbutil.service.StudentService;
import net.yh.student.dbutil.service.impl.StudentServiceImpl;
import javax.swing.;
import javax.swing.border.TitledBorder;
import java.awt.;
import java.awt.event.*;
import java.awt.print.PrinterException;
import java.util.List;
import java.util.Vector;
public class FindStudentsByDepartmentFrame extends JFrame {
/**
* 系部标签
/
private JLabel lblInputDepartment;
/*
* 系部文本框
*/
private JTextField txtDepartment;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlSouth;
private JPanel pnlCenter;
private JPanel pnlNorth;
/**
* 按钮
*/
private JButton btnQuery;
private JButton btnBrowseAll;
private JButton btnPrint;
private JButton btnExit;
/**
* 记录行集
*/
private Vector rows;
/**
* 表格列标题
*/
private Vector colHead;
/**
* 表格
*/
private JTable table;
/**
* 滚动面板
*/
private JScrollPane scroller;
/**
* 当前记录行号
*/
private int currentRow;
/**
* 学生列表
*/
private List students;
/**
* 创建学生服务对象
*/
private StudentService studentService;
/**
* 构造方法
*
* @param title
*/
public FindStudentsByDepartmentFrame(String title) {
super(title);
intiGUI();
}
/**
* 初始化用户界面
*/
private void intiGUI() {
// 创建对象
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
rows = new Vector();
colHead = new Vector();
lblInputDepartment = new JLabel("输入系部：");
txtDepartment = new JTextField(10);
txtDepartment.setHorizontalAlignment(JTextField.CENTER);
btnQuery = new JButton("查询[Q]");
btnQuery.setMnemonic(KeyEvent.VK_Q);
btnBrowseAll = new JButton("显示全部记录[A]");
btnBrowseAll.setMnemonic(KeyEvent.VK_A);
btnPrint = new JButton("打印[P]");
btnPrint.setMnemonic(KeyEvent.VK_D);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.add(pnlSouth, BorderLayout.SOUTH);
panel.add(pnlCenter, BorderLayout.CENTER);
panel.add(pnlNorth, BorderLayout.NORTH);
pnlNorth.add(lblInputDepartment);
pnlNorth.add(txtDepartment);
pnlNorth.add(btnQuery);
pnlNorth.add(btnBrowseAll);
pnlSouth.setLayout(new FlowLayout(FlowLayout.RIGHT));
pnlSouth.add(btnPrint);
pnlSouth.add(btnExit);
pnlCenter.setLayout(new BorderLayout());
// 创建标题边框对象
TitledBorder tb = new TitledBorder("查询结果");
pnlCenter.setBorder(tb);
// 创建学生服务对象
studentService = new StudentServiceImpl() {
@Override
public Vector findRowsByClass() {
return null;
}
@Override
public Vector findRowsByDepartment() {
return null;
}
};
// 获取全部学生列表
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
// 设置窗口属性
setSize(600, 400);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
// 【退出】按钮单击事件
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
dispose();
}
});
// 【打印】按钮单击事件
btnPrint.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
table.print();
} catch (PrinterException e1) {
e1.printStackTrace();
}
}
});
// 【查询】按钮单击事件
btnQuery.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
doQuery();
}
});
// 【显示全部记录】按钮单击事件
btnBrowseAll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 获取全部学生记录
students = studentService.findAllStudents();
// 填充表格数据
fillTableData();
}
});
// 文本框按键事件
txtDepartment.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
doQuery();
}
}
});
// JTable单击事件
table.addMouseListener(new MouseAdapter() {
/* (non-Javadoc)
* @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
*/
/* (non-Javadoc)
* @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
*/
public void mouseClicked(MouseEvent e) {
// 获取当前行的行数
int row = table.rowAtPoint(e.getPoint());
// 选中鼠标单击的行
table.setRowSelectionInterval(row, row);
// 设置文本框内容
txtDepartment.setText(table.getValueAt(row, 4).toString());
}
});
}
/**
* 查询方法
*/
private void doQuery() {
// 获取查询系部
String department = txtDepartment.getText().trim();
if (!department.equals("")) {
// 按系部查询获取学生列表
students = studentService.findStudentsByDepartment(department);
// 填充表格
fillTableData();
} else {
JOptionPane.showMessageDialog(this, "请输入待查系部！", "警告", JOptionPane.WARNING_MESSAGE);
txtDepartment.requestFocus();
}
}
/**
* 填充表格方法
*/
private void fillTableData() {
// 填充表头
colHead.clear();
colHead.add("学号");
colHead.add("姓名");
colHead.add("性别");
colHead.add("年龄");
colHead.add("系部");
colHead.add("班级");
colHead.add("电话");
// 填充表记录
rows.clear();
for (Student student : students) {
Vector currentRow = new Vector();
currentRow.addElement(student.getId());
currentRow.addElement(student.getName());
currentRow.addElement(student.getSex());
currentRow.addElement(student.getAge() + "");
currentRow.addElement(student.getDepartment());
currentRow.addElement(student.getClazz());
currentRow.addElement(student.getTelephone());
// 将当前行添加到记录行集
rows.add(currentRow);
}
// 创建表格（参数1：记录集；参数2：表头）
table = new JTable(rows, colHead);
// 定义滚动面板
scroller = new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// 将滚动面板添加到中心面板
pnlCenter.add(scroller, BorderLayout.CENTER);
// 重绘窗体
repaint();
// 判断是否有记录行
if (rows.isEmpty()) {
JOptionPane.showMessageDialog(this, "没有符合条件的记录！", "错误提示", JOptionPane.WARNING_MESSAGE);
txtDepartment.setText("");
} else {
// 让滚动条移到最上方
scroller.getVerticalScrollBar().setValue(0);
}
}
public static void main(String[] args) {
new FindStudentsByDepartmentFrame("");
}
}
LoginFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.app.Application;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.service.StatusService;
import net.yh.student.dbutil.service.UserService;
import net.yh.student.dbutil.service.impl.StatusServiceImpl;
import net.yh.student.dbutil.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
public class LoginFrame extends JFrame {
/**
* 用户名
/
private String username;
/*
* 密码
/
private String password;
/*
* 用户名标签
/
private JLabel lblUsername;
/*
* 密码标签
/
private JLabel lblPassword;
/*
* 用户名文本框
/
private JTextField txtUsername;
/*
* 密码文本框
/
private JPasswordField txtPassword;
/*
* 确定按钮
/
private JButton btnOK;
/*
* 取消按钮
/
private JButton btnCancel;
/*
* 注册按钮
/
private JButton btnRegister;
/*
* 主面板
/
private JPanel panel;
/*
* 第一行面板
/
private JPanel panel1;
/*
* 第二行面板
/
private JPanel panel2;
/*
* 第三行面板
*/
private JPanel panel3;
/**
* 构造方法
*
* @param title
*/
public LoginFrame(String title) {
super(title);
// 调用初始化界面方法
initGUI();
}
/**
* 初始化界面
*/
private void initGUI() {
// 实例化控件
lblUsername = new JLabel("用户名：");
lblPassword = new JLabel("密 码：");
txtUsername = new JTextField("", 15);
txtPassword = new JPasswordField("", 15);
btnOK = new JButton("确定[O]");
btnCancel = new JButton("取消[C]");
btnRegister = new JButton("注册[R]");
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
// 设置主面板为网格布局
panel.setLayout(new GridLayout(3, 1));
// 将三行面板添加到主面板
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
// 将控件分别添加到三行面板
panel1.add(lblUsername);
panel1.add(txtUsername);
panel2.add(lblPassword);
panel2.add(txtPassword);
panel3.add(btnOK);
panel3.add(btnCancel);
panel3.add(btnRegister);
// 设置窗口与控件属性
setSize(250, 200); // 设置窗口大小
setLocationRelativeTo(null);// 让窗口居中
setResizable(false); // 窗口不可调整大小
pack(); // 使窗口恰好容纳组件
setVisible(true); // 让窗口可见
btnOK.setMnemonic(KeyEvent.VK_O); // 设置热键字母
btnCancel.setMnemonic(KeyEvent.VK_C);// 设置热键字母
btnRegister.setMnemonic(KeyEvent.VK_R);// 设置热键字母
// txtPassword.setEchoChar('*');//设置回显字符
/*
* 注册监听器，编写事件处理代码 采用匿名内部类方式来实现
*/
// 确定按钮单击事件
btnOK.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
login();
}
});
// 确定按钮按键事件
btnOK.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
login();
}
}
});
// 取消按钮单击事件
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
// 注册按钮单击事件
btnRegister.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// 隐藏登录窗口
Application.loginFrame.setVisible(false);
// 实例化注册窗口
Application.registerFrame = new RegisterFrame("注册");
}
});
// 用户名文本框按键事件
txtUsername.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtPassword.requestFocus();
}
}
});
// 密码文本框按键事件
txtPassword.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
login();
}
}
});
}
/**
* 登录方法
*/
private void login() {
// 获取用户名
username = txtUsername.getText().trim();
// 获取密码
password = new String(txtPassword.getPassword());
// 创建用户服务对象
UserService userService = new UserServiceImpl();
// 用户登录
User user = userService.login(username, password);
// 判断是否登录成功
if (user != null) {
// 隐藏登录窗口
Application.loginFrame.setVisible(false);
// 定义状态服务对象
StatusService statusService = new StatusServiceImpl();
// 保存用户标识
Application.id = user.getId();
// 保存用户名
Application.username = user.getUsernname();
// 提示用户登录成功
JOptionPane.showMessageDialog(null, "欢迎使用学生信息管理系统" + statusService.findStatusById(1).getVersion() + "！",
"学生信息管理系统", JOptionPane.INFORMATION_MESSAGE);
// 显示系统主窗口
Application.mainFrame = new MainFrame("学生信息管理系统" + statusService.findStatusById(1).getVersion());
// 释放登录窗口
Application.loginFrame.dispose();
} else {
// 隐藏登录窗口
Application.loginFrame.setVisible(false);
// 提示用户登录失败
JOptionPane.showMessageDialog(null, "用户名或密码错误，请重新输入！", "学生信息管理系统", JOptionPane.ERROR_MESSAGE);
// 显示登录窗口
Application.loginFrame.setVisible(true);
// 用户名文本全部选中
txtUsername.selectAll();
// 密码文本全部选中
txtPassword.selectAll();
// 用户名文本框获取焦点
txtUsername.requestFocus();
}
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
// 设置应用程序登录窗口
Application.loginFrame = new LoginFrame("登录");
}
}
MainFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.app.Application;
import net.yh.student.dbutil.bean.Status;
import net.yh.student.dbutil.service.StatusService;
import net.yh.student.dbutil.service.impl.StatusServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.io.IOException;
/**
- 功能：主界面窗口
-
通过菜单系统 -
调用各个功能模块 - 作者：杨华
- 日期：2019年6月22日
*/
public class MainFrame extends JFrame {
/**
* 菜单部分
/
private JMenuBar mnbMain;
/*
* 设置菜单
/
private JMenu mnuSet;
private JMenuItem mniSetCollegeInfo;
private JMenuItem mniSetStatusBar;
private JMenuItem mniChangePassword;
private JMenuItem mniExit;
/*
* 操作菜单
/
private JMenu mnuOperate;
private JMenuItem mniAddStudent;
private JMenuItem mniBrowseStudent;
private JMenuItem mniEditStudent;
/*
* 删除菜单
/
private JMenu mnuDelStu;
private JMenuItem mniDelStudentById;
private JMenuItem mniDelStudentsByClass;
private JMenuItem mniDelStudentsByDepartment;
/*
* 查询菜单
/
private JMenu mnuFind;
private JMenuItem mniFindStudentById;
private JMenuItem mniFindStudentsByName;
private JMenuItem mniFindStudentsByClass;
private JMenuItem mniFindStudentsByDepartment;
/*
* 统计菜单
/
private JMenu mnuCount;
private JMenuItem mniCountStudentsBySex;
private JMenuItem mniCountStudentsByClass;
private JMenuItem mniCountStudentsByDepartment;
/*
* 帮助菜单
/
private JMenu mnuHelp;
private JMenuItem mniHelp;
private JMenuItem mniAbout;
/*
* 面板
/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlSouth;
/*
* 状态栏标签
/
private JLabel lblStatusBar;
/*
* 背景标签
*/
private JLabel lblBackground;
/**
* 图标对象
*/
private ImageIcon imgCollege;
private ImageIcon imgExit;
private ImageIcon imgPassword;
private ImageIcon imgQuery;
private ImageIcon imgBrowse;
private ImageIcon imgCount;
private ImageIcon imgBackground;
/**
* 工具栏
*/
private JToolBar toolbar;
/**
* 按钮
*/
private JButton btnSetCollege;
private JButton btnChangePassword;
private JButton btnFindStudentById;
private JButton btnExit;
private JButton btnBrowseStudent;
private JButton btnCountByDepartment;
/**
* 状态对象
*/
private Status status;
/**
* 状态服务对象
*/
private StatusService statusService;
/**
* 构造方法
*
* @param title
*/
public MainFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化图形用户界面
*/
private void initGUI() {
// 创建主菜单
mnbMain = new JMenuBar();
// 创建【设置】菜单及其菜单项
mnuSet = new JMenu("系统设置[S]");
mnuSet.setMnemonic(KeyEvent.VK_S);
mniSetCollegeInfo = new JMenuItem("学校信息");
mniSetStatusBar = new JMenuItem("状态栏信息");
mniChangePassword = new JMenuItem("修改密码");
mniExit = new JMenuItem("退出系统");
// 创建【操作】菜单及其菜单项
mnuOperate = new JMenu("数据操作[O]");
mnuOperate.setMnemonic(KeyEvent.VK_O);
mniAddStudent = new JMenuItem("增加学生表记录");
mnuDelStu = new JMenu("删除学生表记录");
mniEditStudent = new JMenuItem("编辑学生表记录");
mniBrowseStudent = new JMenuItem("浏览学生表记录");
// 创建【删除学生表记录】的子菜单
mniDelStudentById = new JMenuItem("按学号删除");
mniDelStudentsByClass = new JMenuItem("按班级删除");
mniDelStudentsByDepartment = new JMenuItem("按系部删除");
// 创建【查询】菜单及其菜单项
mnuFind = new JMenu("查询学生[Q]");
mnuFind.setMnemonic(KeyEvent.VK_Q);
mniFindStudentById = new JMenuItem("按学号查询");
mniFindStudentsByName = new JMenuItem("按姓名查询");
mniFindStudentsByClass = new JMenuItem("按班级查询");
mniFindStudentsByDepartment = new JMenuItem("按系部查询");
// 创建【统计】菜单及其菜单项
mnuCount = new JMenu("人数统计[C]");
mnuCount.setMnemonic(KeyEvent.VK_C);
mniCountStudentsBySex = new JMenuItem("按性别统计");
mniCountStudentsByClass = new JMenuItem("按班级统计");
mniCountStudentsByDepartment = new JMenuItem("按系部统计");
// 创建【帮助】菜单及其菜单项
mnuHelp = new JMenu("帮助[H]");
mnuHelp.setMnemonic(KeyEvent.VK_H);
mniHelp = new JMenuItem("帮助");
mniAbout = new JMenuItem("关于");
// 创建图标对象
imgCollege = new ImageIcon("images/college.png");
imgPassword = new ImageIcon("images/password.png");
imgQuery = new ImageIcon("images/query.png");
imgBrowse = new ImageIcon("images/browse.png");
imgCount = new ImageIcon("images/count.png");
imgExit = new ImageIcon("images/exit.png");
// 创建工具栏
toolbar = new JToolBar();
btnSetCollege = new JButton("设置学校", imgCollege);
btnSetCollege.setToolTipText("设置学校信息");
btnSetCollege.setVerticalTextPosition(AbstractButton.BOTTOM);
btnSetCollege.setHorizontalTextPosition(AbstractButton.CENTER);
btnChangePassword = new JButton("修改密码", imgPassword);
btnChangePassword.setToolTipText("修改用户密码");
btnChangePassword.setVerticalTextPosition(AbstractButton.BOTTOM);
btnChangePassword.setHorizontalTextPosition(AbstractButton.CENTER);
btnBrowseStudent = new JButton("浏览学生", imgBrowse);
btnBrowseStudent.setToolTipText("浏览学生记录");
btnBrowseStudent.setVerticalTextPosition(AbstractButton.BOTTOM);
btnBrowseStudent.setHorizontalTextPosition(AbstractButton.CENTER);
btnFindStudentById = new JButton("查询学生", imgQuery);
btnFindStudentById.setToolTipText("按学号查询学生记录");
btnFindStudentById.setVerticalTextPosition(AbstractButton.BOTTOM);
btnFindStudentById.setHorizontalTextPosition(AbstractButton.CENTER);
btnCountByDepartment = new JButton("统计人数", imgCount);
btnCountByDepartment.setToolTipText("按系部统计学生人数");
btnCountByDepartment.setVerticalTextPosition(AbstractButton.BOTTOM);
btnCountByDepartment.setHorizontalTextPosition(AbstractButton.CENTER);
btnExit = new JButton("退出系统", imgExit);
btnExit.setToolTipText("退出系统");
btnExit.setVerticalTextPosition(AbstractButton.BOTTOM);
btnExit.setHorizontalTextPosition(AbstractButton.CENTER);
toolbar.add(btnSetCollege);
toolbar.add(btnChangePassword);
toolbar.add(btnBrowseStudent);
toolbar.add(btnFindStudentById);
toolbar.add(btnCountByDepartment);
toolbar.add(btnExit);
// 创建面板
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlSouth.setLayout(new FlowLayout(FlowLayout.LEFT));
// 创建背景图片
imgBackground = new ImageIcon("images/background.jpg");
// 创建背景标签
lblBackground = new JLabel(imgBackground);
// 创建状态栏标签
lblStatusBar = new JLabel();
// 设置菜单栏
setJMenuBar(mnbMain);
// 添加【设置】菜单
mnbMain.add(mnuSet);
mnuSet.add(mniSetCollegeInfo);
mnuSet.add(mniSetStatusBar);
mnuSet.add(mniChangePassword);
mnuSet.addSeparator();
mnuSet.add(mniExit);
// 添加【删除学生表记录】菜单
mnuDelStu.add(mniDelStudentById);
mnuDelStu.add(mniDelStudentsByClass);
mnuDelStu.add(mniDelStudentsByDepartment);
// 添加【操作】菜单
mnbMain.add(mnuOperate);
mnuOperate.add(mniAddStudent);
mnuOperate.add(mniEditStudent);
mnuOperate.add(mnuDelStu);
mnuOperate.add(mniBrowseStudent);
// 添加【查询】菜单
mnbMain.add(mnuFind);
mnuFind.add(mniFindStudentById);
mnuFind.add(mniFindStudentsByName);
mnuFind.add(mniFindStudentsByClass);
mnuFind.add(mniFindStudentsByDepartment);
// 添加【统计】菜单
mnbMain.add(mnuCount);
mnuCount.add(mniCountStudentsBySex);
mnuCount.add(mniCountStudentsByClass);
mnuCount.add(mniCountStudentsByDepartment);
// 添加【帮助】菜单
mnbMain.add(mnuHelp);
mnuHelp.add(mniHelp);
mnuHelp.add(mniAbout);
// 添加面板
panel.setLayout(new BorderLayout());
panel.add(toolbar, "North");
panel.add(pnlCenter, "Center");
panel.add(pnlSouth, "South");
pnlCenter.add(lblBackground);
pnlSouth.add(lblStatusBar);
// 非管理员不能设置状态栏
if (!Application.username.equals("admin")) {
mniSetStatusBar.setEnabled(false);
mniAddStudent.setEnabled(false);
mnuDelStu.setEnabled(false);
mniEditStudent.setEnabled(false);
}
// 设置状态栏信息
setStatusBar();
// 创建状态服务对象
statusService = new StatusServiceImpl();
// 获取状态对象
status = statusService.findStatusById(1);
// 设置窗口尺寸
setSize(800, 640);
// 设置窗口可见
setVisible(true);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle("学生信息管理系统" + status.getVersion());
// 注册窗口监听器，继承窗口适配器，编写事件处理方法
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
exitSystem();
}
});
// 设置菜单
// 【设置学校信息】菜单项单击事件
mniSetCollegeInfo.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetCollegeInformationFrame("");
}
});
// 【设置状态栏信息】菜单项单击事件
mniSetStatusBar.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetStatusBarFrame("");
}
});
// 【修改密码】菜单项单击事件
mniChangePassword.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new ChangePasswordFrame("");
}
});
// 【退出系统】菜单项单击事件
mniExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
exitSystem();
}
});
// 查询菜单
// 【按学号查询】菜单项单击事件
mniFindStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentByIdFrame("");
}
});
// 【按姓名查询】菜单项单击事件FindStudentsByNameFrame
mniFindStudentsByName.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentByNameFrame("");
}
});
// 【按班级查询】菜单项单击事件
mniFindStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentsByClassFrame("");
}
});
// 【按系部查询】菜单项单击事件
mniFindStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentsByDepartmentFrame("");
}
});
// 统计菜单
// 【按性别统计人数】菜单项单击事件
mniCountStudentsBySex.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsBySexFrame("");
}
});
// 【按班级统计人数】菜单项单击事件
mniCountStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsByClassFrame("");
}
});
// 【按系部统计人数】菜单项单击事件
mniCountStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsByDepartmentFrame("");
}
});
// 【增加学生记录】菜单项单击事件
mniAddStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new AddStudentFrame("");
}
});
// 【按学号删除学生记录】菜单项单击事件
mniDelStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentByIdFrame("");
}
});
// 【按班级删除学生记录】菜单项单击事件
mniDelStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentsByClassFrame("");
}
});
// 【按系部删除学生记录】菜单项单击事件
mniDelStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentsByDepartmentFrame("");
}
});
// 【编辑学生记录】菜单项单击事件
mniEditStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new EditStudentFrame("");
}
});
// 【浏览学生记录】菜单项单击事件
mniBrowseStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new BrowseStudentsFrame("");
}
});
// 【帮助】菜单单击事件
mniHelp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Runtime.getRuntime().exec("cmd /c start help/帮助文档.chm");
} catch (IOException e1) {
JOptionPane.showMessageDialog(null, e1.getMessage(), "学生信息管理系统", JOptionPane.ERROR_MESSAGE);
}
}
});
// 【关于】菜单单击事件
mniAbout.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,
"开发人员：" + status.getCollege() + "_" + status.getAuthor() + "\n联系电话：" + status.getTelephone()
+ "\n电子邮箱：" + status.getEmail(),
"学生信息管理系统" + status.getVersion(), JOptionPane.INFORMATION_MESSAGE);
}
});
// 工具栏按钮单击事件
// 【设置学校信息】按钮
btnSetCollege.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetCollegeInformationFrame("");
}
});
// 【修改密码】按钮
btnChangePassword.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new ChangePasswordFrame("");
}
});
// 【浏览】按钮
btnBrowseStudent.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new BrowseStudentsFrame("");
}
});
// 【查询】按钮
btnFindStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentByIdFrame("");
}
});
// 【统计】按钮
btnCountByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsByDepartmentFrame("");
}
});
// 【退出】按钮
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
exitSystem();
}
});
}
/**
* 退出系统（询问用户是否要退出）
*/
private void exitSystem() {
int choice = JOptionPane.showConfirmDialog(this,
"您是否要退出系统？", "学生信息管理系统", JOptionPane.YES_NO_OPTION);
if (choice == JOptionPane.YES_OPTION) {
System.exit(0);
} else {
// 卸载当前窗口
dispose();
// 重新显示主窗口
Application.mainFrame = new MainFrame("学生信息管理系统" + status.getVersion());
}
}
/**
* 设置状态栏信息
*/
public void setStatusBar() {
// 创建状态服务对象
statusService = new StatusServiceImpl();
// 获取状态栏对象
status = statusService.findStatusById(1);
// 设置状态栏标签
lblStatusBar.setText(
status.getCollege() + "学生信息管理系统" + status.getVersion() + " 作者：" + status.getAuthor() + " 地址："
+ status.getAddress() + " 电话：" + status.getTelephone() + " 邮箱：" + status.getEmail());
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
Application.mainFrame = new MainFrame("");
}
}
ResisterFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.app.Application;
import net.yh.student.dbutil.bean.User;
import net.yh.student.dbutil.service.UserService;
import net.yh.student.dbutil.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.sql.Timestamp;
import java.util.Date;
public class RegisterFrame extends JFrame {
/**
* 标签
*/
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblTelephone;
/**
* 文本框
*/
private JTextField txtUsername;
private JTextField txtTelephone;
private JPasswordField txtPassword;
/**
* 按钮
*/
private JButton btnSubmit;
private JButton btnCancel;
private JButton btnLogin;
/**
* 面板
*/
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;
private String username;
private String password;
private String telephone;
private Date registerTime;
/**
* 学生管理应用程序
*/
private static Application app;
/**
* 构造方法
*
* @param title
*/
public RegisterFrame(String title) {
super(title);
// 创建学生管理应用程序
app = new Application();
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建对象
lblUsername = new JLabel("用户名：");
lblPassword = new JLabel("密 码：");
lblTelephone = new JLabel("电 话：");
txtUsername = new JTextField("", 15);
txtPassword = new JPasswordField("", 15);
txtTelephone = new JTextField("", 15);
btnSubmit = new JButton("提交[S]");
btnCancel = new JButton("取消[C]");
btnLogin = new JButton("登录[L]");
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
// 添加组件
panel.setLayout(new GridLayout(4, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);
panel1.add(lblUsername);
panel1.add(txtUsername);
panel2.add(lblPassword);
panel2.add(txtPassword);
panel3.add(lblTelephone);
panel3.add(txtTelephone);
panel4.add(btnSubmit);
panel4.add(btnCancel);
panel4.add(btnLogin);
// 设置属性
setSize(250, 200); // 设置窗口大小
setLocationRelativeTo(null);// 让窗口居中
setResizable(false); // 窗口不可调整大小
pack(); // 使窗口恰好容纳组件
setVisible(true); // 让窗口可见
btnSubmit.setMnemonic(KeyEvent.VK_O); // 设置热键字母
btnCancel.setMnemonic(KeyEvent.VK_C);// 设置热键字母
btnLogin.setMnemonic(KeyEvent.VK_R);// 设置热键字母
txtPassword.setEchoChar('*');// 设置回显字符
/*
* 注册监听器，编写事件处理代码 采用匿名内部类方式来实现
*/
// 提交按钮单击事件
btnSubmit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
register();
}
});
// 提交按钮按键事件
btnSubmit.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
register();
}
}
});
// 取消按钮单击事件
btnCancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 显示登录窗口
Application.loginFrame.setVisible(true);
// 关闭当前窗口
dispose();
}
});
// 登录按钮按键事件
btnLogin.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// 显示登录窗口
Application.loginFrame.setVisible(true);
// 关闭当前窗口
dispose();
}
});
// 用户名文本框按键事件
txtUsername.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtPassword.requestFocus();
}
}
});
// 密码文本框按键事件
txtPassword.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
txtTelephone.requestFocus();
}
}
});
// 电话文本框按键事件
txtTelephone.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
btnSubmit.requestFocus();
}
}
});
}
/**
* 注册方法
*/
private void register() {
// 获取用户名
username = txtUsername.getText().trim();
// 获取密码
password = new String(txtPassword.getPassword());
// 获取电话
telephone = txtTelephone.getText().trim();
// 定义当前时间为注册时间
registerTime = new Timestamp(System.currentTimeMillis());
// 定义用户服务对象
UserService userService = new UserServiceImpl();
// 创建用户
User user = new User();
user.setUsernname(username);
user.setPassword(password);
user.setTelephone(telephone);
user.setRegisterTime(registerTime);
// 添加用户
int count = userService.addUser(user);
// 判断是否添加成功
if (count > 0) {
setVisible(false);
JOptionPane.showMessageDialog(null, "恭喜！注册成功！", "学生信息管理系统", JOptionPane.INFORMATION_MESSAGE);
setVisible(true);
} else {
JOptionPane.showMessageDialog(null, "遗憾！注册失败！", "学生信息管理系统", JOptionPane.INFORMATION_MESSAGE);
}
}
}
SetCollegeInformationFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.bean.College;
import net.yh.student.dbutil.service.CollegeService;
import net.yh.student.dbutil.service.impl.CollegeServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class SetCollegeInformationFrame extends JFrame {
/**
* 面板
/
JPanel panel;
JPanel pnlNorth;
JPanel panel1;
JPanel panel2;
JPanel panel3;
JPanel panel4;
JPanel panel5;
JPanel pnlCenter;
JPanel pnlSouth;
/*
* 标签
/
JLabel lblName;
JLabel lblPresident;
JLabel lblStartTime;
JLabel lblTelephone;
JLabel lblEmail;
JLabel lblAddress;
JLabel lblProfile;
/*
* 按钮
/
JButton btnSave;
JButton btnExit;
/*
* 文本框与文本区
/
JTextField txtName;
JTextField txtPresident;
JTextField txtStartTime;
JTextField txtTelephone;
JTextField txtEMail;
JTextField txtAddress;
JTextArea txtProfile;
/*
* 滚动面板
/
JScrollPane scrollPane;
/*
* 学校服务
*/
private CollegeService collegeService;
private College college;
private int id = 1;
/**
* 构造方法
*
* @param title
*/
public SetCollegeInformationFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件（面板与控件）
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel5 = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
lblName = new JLabel("学校名称：");
lblPresident = new JLabel("校 长：");
lblStartTime = new JLabel("建校时间：");
lblTelephone = new JLabel("联系电话：");
lblEmail = new JLabel("电子邮箱：");
lblAddress = new JLabel("通讯地址：");
lblProfile = new JLabel("学校简介：");
txtName = new JTextField(30);
txtPresident = new JTextField(11);
txtStartTime = new JTextField(12);
txtTelephone = new JTextField(11);
txtEMail = new JTextField(12);
txtAddress = new JTextField(30);
txtProfile = new JTextArea(5, 37);
txtProfile.setLineWrap(true);// 让文本区自动换行
scrollPane = new JScrollPane(txtProfile, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
btnSave = new JButton("保存[S]");
btnSave.setMnemonic(KeyEvent.VK_S);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 设置大面板布局，将北面板、中面板与南面板添加到大面板
panel.setLayout(new BorderLayout());
panel.add(pnlNorth, "North");
panel.add(pnlCenter, "Center");
panel.add(pnlSouth, "South");
// 设置北面板布局，添加五个小面板
pnlNorth.setLayout(new GridLayout(5, 1));
pnlNorth.add(panel1);
pnlNorth.add(panel2);
pnlNorth.add(panel3);
pnlNorth.add(panel4);
pnlNorth.add(panel5);
// 将控件依次添加到五个小面板
panel1.add(lblName);
panel1.add(txtName);
panel2.add(lblPresident);
panel2.add(txtPresident);
panel2.add(lblStartTime);
panel2.add(txtStartTime);
panel3.add(lblTelephone);
panel3.add(txtTelephone);
panel3.add(lblEmail);
panel3.add(txtEMail);
panel4.add(lblAddress);
panel4.add(txtAddress);
panel5.add(lblProfile);
// 将滚动面板添加到中面板
pnlCenter.add(scrollPane);
// 将两个按钮添加到南面板
pnlSouth.add(btnSave);
pnlSouth.add(btnExit);
// 创建学校服务对象
collegeService = new CollegeServiceImpl();
// 获取学校对象
college = collegeService.findCollegeById(id);
// 利用学校对象属性值设置相应控件的内容
txtName.setText(college.getName());
txtPresident.setText(college.getPresident());
txtStartTime.setText(college.getStartTime().toString());
txtTelephone.setText(college.getTelephone());
txtEMail.setText(college.getEmail());
txtAddress.setText(college.getAddress());
txtProfile.setText(college.getProfile());
// 设置窗口大小
setSize(550, 450);
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口不可调整大小
setResizable(false);
// 设置窗口刚好容纳组件
pack();
// 设置窗口标题
setTitle("设置学校信息");
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【关闭】按钮单击事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
// 关闭窗口
dispose();
}
});
// 【保存】按钮单击事件处理
btnSave.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
try {
// 修改学校对象属性
college.setName(txtName.getText());
college.setPresident(txtPresident.getText());
college.setStartTime(new Timestamp(
new SimpleDateFormat("yyyy-MM-dd")
.parse(txtStartTime.getText().toString()).getTime()));
college.setTelephone(txtTelephone.getText());
college.setEmail(txtEMail.getText());
college.setAddress(txtAddress.getText());
college.setProfile(txtProfile.getText());
// 更新学校信息
collegeService.updateCollege(college);
// 提示用户更新成功
JOptionPane.showMessageDialog(null, "更新数据成功！");
} catch (ParseException e) {
// 提示用户更新失败
JOptionPane.showMessageDialog(null, "更新数据失败！");
}
}
});
}
/**
* 主方法
*
* @param args
*/
public static void main(String[] args) {
new SetCollegeInformationFrame("");
}
}
SetStatuBarFrame
package net.yh.student.dbutil.gui;
import net.yh.student.dbutil.app.Application;
import net.yh.student.dbutil.bean.Status;
import net.yh.student.dbutil.service.StatusService;
import net.yh.student.dbutil.service.impl.StatusServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
public class SetStatusBarFrame extends JFrame {
/**
* 面板
/
private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;
private JPanel panel5;
/*
* 标签
/
private JLabel lblCollege;
private JLabel lblVersion;
private JLabel lblAuthor;
private JLabel lblTelephone;
private JLabel lblAddress;
private JLabel lblEmail;
/*
* 文本框
/
private JTextField txtCollege;
private JTextField txtVersion;
private JTextField txtAuthor;
private JTextField txtTelephone;
private JTextField txtAddress;
private JTextField txtEmail;
/*
* 按钮
/
private JButton btnSave;
private JButton btnExit;
/*
* 状态服务对象
*/
private StatusService statusService;
/**
* 构造方法
*
* @param title
*/
public SetStatusBarFrame(String title) {
super(title);
initGUI();
}
/**
* 初始化用户界面
*/
private void initGUI() {
// 创建组件
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel5 = new JPanel();
lblCollege = new JLabel("校名：");
lblVersion = new JLabel("版本：");
lblAuthor = new JLabel("作者：");
lblTelephone = new JLabel("电话：");
lblAddress = new JLabel("地址：");
lblEmail = new JLabel("邮件：");
txtCollege = new JTextField(12);
txtVersion = new JTextField(12);
txtAuthor = new JTextField(12);
txtTelephone = new JTextField(12);
txtAddress = new JTextField(29);
txtEmail = new JTextField(29);
btnSave = new JButton("保存[S]");
btnSave.setMnemonic(KeyEvent.VK_S);
btnExit = new JButton("退出[X]");
btnExit.setMnemonic(KeyEvent.VK_X);
// 添加组件
panel.setLayout(new GridLayout(5, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);
panel.add(panel5);
panel1.add(lblCollege);
panel1.add(txtCollege);
panel1.add(lblVersion);
panel1.add(txtVersion);
panel2.add(lblAuthor);
panel2.add(txtAuthor);
panel2.add(lblTelephone);
panel2.add(txtTelephone);
panel3.add(lblAddress);
panel3.add(txtAddress);
panel4.add(lblEmail);
panel4.add(txtEmail);
panel5.add(btnSave);
panel5.add(btnExit);
// 创建状态服务对象
statusService = new StatusServiceImpl();
// 按标识符获取状态对象
Status status = statusService.findStatusById(1);
if (status != null) {
txtCollege.setText(status.getCollege());
txtVersion.setText(status.getVersion());
txtAuthor.setText(status.getAuthor());
txtAddress.setText(status.getAuthor());
txtTelephone.setText(status.getTelephone());
txtAddress.setText(status.getAddress());
txtEmail.setText(status.getEmail());
}
// 设置窗口属性
setResizable(false);
pack();
setLocationRelativeTo(null);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 【关闭】按钮事件处理
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
dispose();
}
});
// 【保存】按钮事件处理
btnSave.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 获取状态信息对象
Status status = statusService.findStatusById(1);
// 修改属性值
status.setCollege(txtCollege.getText());
status.setVersion(txtVersion.getText());
status.setAuthor(txtAuthor.getText());
status.setTelephone(txtTelephone.getText());
status.setAddress(txtAddress.getText());
status.setEmail(txtEmail.getText());
// 更新状态记录
int count = statusService.updateStatus(status);
// 判断是否更新成功
if (count > 0) {
Application.mainFrame.setStatusBar();
Application.mainFrame.setTitle("学生信息管理系统" + status.getVersion());
}
}
});
}
}
测试