简单无UI学生管理系统
学生管理系统
功能
-
添加
-
删除
-
更新
- 在form表单里添加一个隐藏的id文本框
- 按id更新
-
模糊查询
- 只按姓名查询
- 只按性别查询
- 两者兼有
-
分页
分页属于一个业务，里面包含多个逻辑单元
class PageBean{ 当前页 int currentPage 总页数 int totalPage 总记录数 int totalSize 每页记录数 int pageSize 该页的学生集合 List}
后台实现的代码
- 工具包 com.yll.util
- JDBCUtil.java
DBUtils 用于数据库连接
package com.yll.util;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;
import com.mchange.v2.c3p0.ComboPooledDataSource;
public class JDBCUtil {
static ComboPooledDataSource dataSource = null;
static {
dataSource = new ComboPooledDataSource();
}
public static DataSource getDataSource() {
return dataSource;
}
/**
* 获取连接对象
* @return
* @thorws SQLException
* */
public static Connection getConn() throws SQLException {
return dataSource.getConnection();
}
/**
* 释放资源
* @param conn
* @param st
* @param rs
* */
public static void release(Connection conn,Statement st,ResultSet rs) {
closeRs(rs);
closeSt(st);
closeConn(conn);
}
public static void release(Connection conn,Statement st) {
closeSt(st);
closeConn(conn);
}
public static void closeRs(ResultSet rs) {
try {
if(rs != null) {
rs.close();}
}catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
rs = null;
}
}
public static void closeSt(Statement st) {
try {
if(st != null) {
st.close();}
}catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
st = null;
}
}
public static void closeConn(Connection conn) {
try {
if(conn != null) {
conn.close();}
}catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
conn = null;
}
}
}
- TextUtils.java
判断字符串是否为空
package com.yll.util;
public class TextUtils {
/*
* 判断字符串是否为空
* @param s
*
* */
public static boolean isEmpty(CharSequence s) {
return s == null || s.length() == 0;
}
}
- 包 com.yll.dao dao层
- StudentDao.java
package com.yll.dao;
import java.sql.SQLException;
import java.util.List;
import com.yll.domain.Student;
/*
* 针对学生表的数据访问
* */
public interface StudentDao {
/*
* 现阶段用啥写啥
* */
//一页显示多少条记录
int PAGE_SIZE = 5;
/**
* 查询当页的学生人数
* @param currentPage
* @return
* @thorws SQLException
* */
List<Student> findStudentByPage(int currentPage) throws SQLException;
/*
* 查询所有学生
* @ return List
* */
List<Student> findAll() throws SQLException;
/**
* 添加学生
* @param stu 需要添加到数据库的学生对象
* @throws SQLException
* */
void insert(Student stu) throws SQLException;
/**
* 根据id删除学生
* @param sid
* @throws SQLException
* */
void delete(int sid) throws SQLException;
/**
* 根据id查询单个学生对象
* @param id
* @throws SQLException
* */
Student findStudentById(int sid) throws SQLException;
/**
* 模糊查询，根据姓名或者性别或者都有
*@param sname
*@param sgender
*@return List
*@throws SQLException
* */
List<Student> searchStudent(String sname,String sgender) throws SQLException;
/**
* 更新学生信息
* @param stu 需要更新的学生数据
* @throws SQLException
* */
void update (Student stu) throws SQLException;
/**
* 查询总记录
* @throws SQLException
* */
int findCount() throws SQLException;
}
- 包 com.yll.dao.impl dao 功能实现
- StudentDaoImpl.java
package com.yll.dao.impl;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.ScalarHandler;
import com.yll.dao.StudentDao;
import com.yll.domain.Student;
import com.yll.util.JDBCUtil;
import com.yll.util.TextUtils;
public class StudentDaoImpl implements StudentDao{
/**
* 查询所有学生
* */
@Override
public List<Student> findAll() throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
return runner.query("select * from stu;", new BeanListHandler<Student>(Student.class));
}
/**
* 插入
* */
@Override
public void insert(Student stu) throws SQLException {
QueryRunner Runner = new QueryRunner(JDBCUtil.getDataSource());
Runner.update("insert into stu values(null, ?, ?, ?, ?, ?, ?)",
stu.getSname(),stu.getGender(),stu.getPhone(),stu.getBirthday(),
stu.getHobby(),stu.getInfo()
);
}
/**
* 删除
* */
@Override
public void delete(int sid) throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
runner.update("delete from stu where sid = ?;",sid);
}
/**
* 查询单个学生
* */
@Override
public Student findStudentById(int sid) throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
return runner.query("select * from stu where sid = ?",new BeanHandler<Student>(Student.class) ,sid);
}
/**
* 更新
* */
@Override
public void update(Student stu) throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
runner.update("update stu set sname=?,gender=?,phone=?,birthday=?,hobby=?,info=? where sid = ?",
stu.getSname(),stu.getGender(),stu.getPhone(),stu.getBirthday(),
stu.getHobby(),stu.getInfo(),stu.getSid()
);
}
/**
* 根据name 或 sgender查询
* */
@Override
public List<Student> searchStudent(String sname, String sgender) throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
String sql = "select * from stu where 1=1";
List<String> list = new ArrayList<String> ();
//判断有没有姓名，如果有，就拼到sql语句中
if(!TextUtils.isEmpty(sname)) {
sql = sql + " and sname like ?";
list.add("%"+sname+"%");
}
if(!TextUtils.isEmpty(sgender)) {
sql = sql + " and gender = ?";
list.add(sgender);
}
list.toArray();
return runner.query(sql, new BeanListHandler<Student>(Student.class),list.toArray() );
}
/**
* 查询单页学生
* */
@Override
public List<Student> findStudentByPage(int currentPage) throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
return runner.query("select * from stu limit ? offset ?;", new BeanListHandler<Student>(Student.class), PAGE_SIZE, (currentPage-1)*PAGE_SIZE);
}
@Override
public int findCount() throws SQLException {
QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
//用于处理平均值，总的个数
Long result = (Long) runner.query("select COUNT(*) from stu;",new ScalarHandler());
return result.intValue();
}
}
- 包com.yll.service service层
- StudentService.java
package com.yll.service;
import java.sql.SQLException;
import java.util.List;
import com.yll.domain.PageStudentBean;
import com.yll.domain.Student;
/*
* 这是学生业务处理规范
*
* */
public interface StudentService {
/**
* 查询所有学生
* @ return List
* */
List<Student> findAll() throws SQLException;
/**
* 添加学生
* @param stu 需要添加到数据库的学生对象
* @throws SQLException
* */
void insert(Student stu) throws SQLException;
/**
* 根据id删除学生
* @param sid
* @throws SQLLLException
* */
void delete(int sid) throws SQLException;
/**
* 根据id查询单个学生对象
* @param id
* @throws SQLException
* */
Student findStudentById(int sid) throws SQLException;
/**
* 更新学生信息
* @param stu 需要更新的学生数据
* @throws SQLException
* */
void update (Student stu) throws SQLException;
/**
* 模糊查询，根据姓名或者性别或者都有
*@param sname
*@param sgender
*@return List
*@throws SQLException
* */
List<Student> searchStudent(String sname,String sgender) throws SQLException;
/**
* 查询当页的数据
* @param currentPage
* @return
* @thorws SQLException
* */
PageStudentBean findStudentByPage(int currentPage) throws SQLException;
}
- 包 com.service.impl service功能实现
- StudentServiceImpl.java
package com.yll.service.impl;
import java.sql.SQLException;
import java.util.List;
import com.yll.dao.StudentDao;
import com.yll.dao.impl.StudentDaoImpl;
import com.yll.domain.PageStudentBean;
import com.yll.domain.Student;
import com.yll.service.StudentService;
/*
*
* 这是学生业务的实现
* */
public class StudentServiceImpl implements StudentService{
@Override
public List<Student> findAll() throws SQLException {
// QueryRunner runner = new QueryRunner(JDBCUtil.getDataSource());
// return runner.query("select * from stu;", new BeanListHandler(Student.class));
StudentDao dao = new StudentDaoImpl();
return dao.findAll();
}
@Override
public void insert(Student stu) throws SQLException {
StudentDao dao = new StudentDaoImpl();
dao.insert(stu);
}
@Override
public void delete(int sid) throws SQLException {
// TODO Auto-generated method stub
StudentDao dao = new StudentDaoImpl();
dao.delete(sid);
}
@Override
public Student findStudentById(int sid) throws SQLException {
StudentDao dao = new StudentDaoImpl();
return dao.findStudentById(sid);
}
@Override
public void update(Student stu) throws SQLException {
StudentDao dao = new StudentDaoImpl();
dao.update(stu);
}
@Override
public List<Student> searchStudent(String sname, String sgender) throws SQLException {
StudentDao dao = new StudentDaoImpl();
return dao.searchStudent(sname, sgender);
}
@Override
public PageStudentBean findStudentByPage(int currentPage) throws SQLException {
//封装分页的该页数据
PageStudentBean<Student> pageBean = new PageStudentBean<Student>();
pageBean.setCurrentPage(currentPage); //当前页
pageBean.setPageSize(StudentDao.PAGE_SIZE); //每页的记录数
List<Student> list = new StudentDaoImpl().findStudentByPage(currentPage); //当页的学生集合
pageBean.setList(list);
//总的记录数
int totalSize = new StudentDaoImpl().findCount();
pageBean.setTotalSize(totalSize);
//总的页数
pageBean.setTotalPage(totalSize%StudentDao.PAGE_SIZE == 0 ? totalSize/StudentDao.PAGE_SIZE : totalSize/StudentDao.PAGE_SIZE + 1);
return pageBean;
}
}
- 包 com.yll.domain 相当于javaBean的作用
- Student.java
package com.yll.domain;
import java.util.Date;
/*
* 这是学生封装的对象 bean
* */
public class Student {
private int sid;
private String sname;
private String gender;
private String phone;
private String hobby;
private Date birthday;
private String info;
public Student() {}
public Student(String sname, String gender, String phone, String hobby, Date birthday, String info) {
super();
this.sname = sname;
this.gender = gender;
this.phone = phone;
this.hobby = hobby;
this.birthday = birthday;
this.info = info;
}
public Student(int sid,String sname, String gender, String phone, String hobby, Date birthday, String info) {
super();
this.sid = sid;
this.sname = sname;
this.gender = gender;
this.phone = phone;
this.hobby = hobby;
this.birthday = birthday;
this.info = info;
}
public int getSid() {
return sid;
}
public void setSid(int sid) {
this.sid = sid;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getHobby() {
return hobby;
}
public void setHobby(String hobby) {
this.hobby = hobby;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getInfo() {
return info;
}
public void setInfo(String info) {
this.info = info;
}
}
- PageStudentBean.java
package com.yll.domain;
import java.util.List;
/*
* 这是一个用于封装了分页的数据
* 里面包含：
* 该页的学生集合数据
* 总的记录数
* 总的页数
* 当前页
* 每页显示的记录数
*
* */
public class PageStudentBean<T> {
private int currentPage; //当前页
private int totalPage; //总页数
private int pageSize; //每页的记录数
private int totalSize; //总的记录数
private List<T> list; //当前页的学生集合
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getTotalSize() {
return totalSize;
}
public void setTotalSize(int totalSize) {
this.totalSize = totalSize;
}
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
}
- 包com.yll.servlet 服务器
- AddStudentServlet.java
package com.yll.serlvet;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.Student;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* 用于处理学生的添加请求
* Servlet implementation class AddStudentServlet
*/
@WebServlet("/AddStudentServlet")
public class AddStudentServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//获取客户端提交的数据
request.setCharacterEncoding("UTF-8");
String sname = request.getParameter("sname");
String gender = request.getParameter("gender");
String phone = request.getParameter("phone");
String birthday = request.getParameter("birthday");
// String hobby = request.getParameter("hobby");//单个
String info = request.getParameter("info");
String[] h = request.getParameterValues("hobby");
String hobby = Arrays.toString(h);
hobby = hobby.substring(1,hobby.length()-1);
//2.添加到数据库
Date date = new SimpleDateFormat("yyyy-mm-dd").parse(birthday);
Student stu = new Student(sname, gender, phone, hobby, date, info);
StudentService service = new StudentServiceImpl();
service.insert(stu);
//3.跳转到列表页
/*这里直接跳转到页面上，那么一个页面会被重新翻译一次，上面那个request的
* 的请求存放的数据是没有了；
* */
//request.getRequestDispatcher("list.jsp").forward(request, response);
//servlet除了能跳jsp还能跳servlet
request.getRequestDispatcher("StudentListServlet").forward(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- DeleteStudentServlet.java
package com.yll.serlvet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* 用于处理删除学生
* Servlet implementation class DeleteStudentServlet
*/
@WebServlet("/DeleteStudentServlet")
public class DeleteStudentServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//接受id
int sid = Integer.parseInt(request.getParameter("sid"));
//执行删除
StudentService service = new StudentServiceImpl();
service.delete(sid);
//跳转到列表页
request.getRequestDispatcher("StudentListServlet").forward(request, response);;
} catch (Exception e) {
// TODO: handle exception
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- EditStudentServlet.java
package com.yll.serlvet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.Student;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* 处理单个学生信息更新
* 查询一个学生的信息，然后跳转到更新页面
* Servlet implementation class UpdateStudentServlet
*/
@WebServlet("/EditStudentServlet")
public class EditStudentServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//1.接收id
int sid = Integer.parseInt(request.getParameter("sid"));
//2.查询学生数据
StudentService service = new StudentServiceImpl();
Student stu = service.findStudentById(sid);
//3.显示数据 存数据
request.setAttribute("stu", stu);
//跳转
request.getRequestDispatcher("update.jsp").forward(request, response);;
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- SearchStudentServlet.java
package com.yll.serlvet;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.Student;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* Servlet implementation class SearchStudentServlet
*/
@WebServlet("/SearchStudentServlet")
public class SearchStudentServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
try {
//1.取到要查询的关键数据
String sname = request.getParameter("sname");
String sgender = request.getParameter("sgender");
//2.找service 去查询
StudentService service = new StudentServiceImpl();
List<Student> list = service.searchStudent(sname, sgender);
System.out.println("list.size:"+list.size());
//3.跳转界面
request.setAttribute("list", list);
request.getRequestDispatcher("list.jsp").forward(request, response);;
} catch (Exception e) {
// TODO: handle exception
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- StudentListPageServlet.java
package com.yll.serlvet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.PageStudentBean;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* Servlet implementation class StudentListPageServlet
*/
@WebServlet("/StudentListPageServlet")
public class StudentListPageServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//1.获取需要显示的页码数
int currentPage = Integer.parseInt(request.getParameter("currentPage"));
//2.根据指定的页数，去获取该页的数据回来
StudentService service = new StudentServiceImpl();
PageStudentBean pageBean = service.findStudentByPage(currentPage);
request.setAttribute("pageBean", pageBean);
//3.跳转页面
request.getRequestDispatcher("listPage.jsp").forward(request, response);
} catch (Exception e) {
// TODO: handle exception
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- StudentListServlet.java
package com.yll.serlvet;
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.Student;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* 负责查询所有的学生信息，然后呈现到list.jsp页面上
* Servlet implementation class StudentListServlet
*/
@WebServlet("/StudentListServlet")
public class StudentListServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//1.查询处理出来所有的学生了
StudentService service = new StudentServiceImpl();
List<Student> list = service.findAll();
for(Student stu:list) {
System.out.println("stu:"+stu.getSid());
}
//2.把数据存到作用域里
request.setAttribute("list", list);
//3.跳转页面
request.getRequestDispatcher("list.jsp").forward(request, response);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- UpdateStudentServlet.java
package com.yll.serlvet;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.yll.domain.Student;
import com.yll.service.StudentService;
import com.yll.service.impl.StudentServiceImpl;
/**
* Servlet implementation class UpdateStudentServlet
*/
@WebServlet("/UpdateStudentServlet")
public class UpdateStudentServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
//获取客户端提交的数据
request.setCharacterEncoding("UTF-8");
int sid = Integer.parseInt(request.getParameter("sid"));
String sname = request.getParameter("sname");
String gender = request.getParameter("gender");
String phone = request.getParameter("phone");
String birthday = request.getParameter("birthday");
// String hobby = request.getParameter("hobby");//单个
String info = request.getParameter("info");
String[] h = request.getParameterValues("hobby");
String hobby = Arrays.toString(h);
hobby = hobby.substring(1,hobby.length()-1);
//2.添加到数据库
Date date = new SimpleDateFormat("yyyy-mm-dd").parse(birthday);
Student stu = new Student(sid, sname, gender, phone, hobby, date, info);
//3.更新数据库
StudentService service = new StudentServiceImpl();
service.update(stu);
//4.跳转界面
request.getRequestDispatcher("StudentListServlet").forward(request, response);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
- 数据库配置 c3p0-config.xml
<c3p0-config>
<default-config>
<property name="driverClass">com.mysql.cj.jdbc.Driverproperty>
<property name="jdbcUrl">jdbc:mysql://localhost/stu?serverTimezone=UTCproperty>
<property name="user">rootproperty>
<property name="password">52151property>
<property name="initialPoolSize">10property>
<property name="maxIdleTime">30property>
<property name="maxPoolSize">100property>
<property name="minPoolSize">10property>
<property name="maxStatements">200property>
default-config>
<named-config name="oracle">
<property name="acquireIncrement">50property>
<property name="initialPoolSize">100property>
<property name="minPoolSize">50property>
<property name="maxPoolSize">1000property>
<property name="maxStatements">0property>
<property name="maxStatementsPerConnection">5property>
<user-overrides user="master-of-the-universe">
<property name="acquireIncrement">1property>
<property name="initialPoolSize">1property>
<property name="minPoolSize">1property>
<property name="maxPoolSize">5property>
<property name="maxStatementsPerConnection">50property>
user-overrides>
named-config>
c3p0-config>
简陋的前端代码
- index.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta charset="UTF-8">
<title>首页title>
head>
<body>
<H3><a href="StudentListServlet">显示所有学生列表a>H3>
<H3><a href="StudentListPageServlet?currentPage=1">分页显示所有学生列表a>H3>
body>
html>
- add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta charset="UTF-8">
<title>添加学生页面title>
head>
<body>
<form method="post" action="AddStudentServlet">
<table>
<tr>
<td>姓名td>
<td><input type="text" name="sname" />td>
tr>
<tr>
<td>性别td>
<td>
<input type="radio" name="gender" value="男" /> 男
<input type="radio" name="gender" value="女" /> 女
td>
tr>
<tr>
<td>电话td>
<td><input type="text" name="phone" />td>
tr>
<tr>
<td>生日td>
<td><input type="text" name="birthday" />td>
tr>
<tr>
<td>爱好td>
<td>
<input type="checkbox" name="hobby" value="游泳" />游泳
<input type="checkbox" name="hobby" value="篮球" />篮球
<input type="checkbox" name="hobby" value="足球" />足球
<input type="checkbox" name="hobby" value="看书" />看书
<input type="checkbox" name="hobby" value="写字" />写字
td>
tr>
<tr>
<td>简介td>
<td><textarea name="info" rows="3" cols="20">textarea> td>
tr>
<tr>
<td colspan="2"> <input type="submit" value="添加" /> td>
tr>
table>
form>
body>
html>
- update.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<html>
<head>
<meta charset="UTF-8">
<title>添加学生页面title>
head>
<body>
<form method="post" action="UpdateStudentServlet">
<table>
<tr>
<td>姓名td>
<td><input type="text" name="sname" value="${stu.sname }"/>td>
tr>
<tr>
<td>性别td>
<td>
<input type="radio" name="gender" value="男" if test="${stu.gender == '男' }">checkedc:if> /> 男
<input type="radio" name="gender" value="女" if test="${stu.gender == '女' }">checkedc:if> /> 女
td>
tr>
<tr>
<td>电话td>
<td><input type="text" name="phone" value="${stu.phone }"/>td>
tr>
<tr>
<td>生日td>
<td><input type="text" name="birthday" value="${stu.birthday }"/>td>
tr>
<tr>
<td>爱好td>
<td>
<input type="checkbox" name="hobby" value="游泳" if test="${fn:contains(stu.hobby,'游泳') }">checkedc:if> />游泳
<input type="checkbox" name="hobby" value="篮球" if test="${fn:contains(stu.hobby,'篮球') }">checkedc:if>/>篮球
<input type="checkbox" name="hobby" value="足球" if test="${fn:contains(stu.hobby,'足球') }">checkedc:if>/>足球
<input type="checkbox" name="hobby" value="看书" if test="${fn:contains(stu.hobby,'看书') }">checkedc:if>/>看书
<input type="checkbox" name="hobby" value="写字" if test="${fn:contains(stu.hobby,'写字') }">checkedc:if>/>写字
td>
tr>
<tr>
<td>简介td>
<td><textarea name="info" rows="3" cols="20" >${stu.info }textarea> td>
tr>
<tr>
<td colspan="2"> <input type="submit" value="添加" /> td>
tr>
table>
form>
body>
html>
- list.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<meta charset="UTF-8">
<title>学生列表页title>
head>
<body>
<form action="SearchStudentServlet" method="post">
<table border="1" width="700">
<tr>
<td colspan="8">
按姓名查询：<input type="text" name="sname">
按性别查询：
<select name="sgender">
<option value="">请选择
<option value="男"> 男
<option value="女"> 女
select>
<input type="submit" value="查询" >
<a href="add.jsp">添加a>
td>
tr>
<tr align="center">
<td>编号td>
<td>姓名td>
<td>性别td>
<td>电话td>
<td>生日td>
<td>爱好td>
<td>简介td>
<td>操作td>
tr>
<c:forEach items="${list }" var="stu">
<tr align="center">
<td>${stu.sid }td>
<td>${stu.sname }td>
<td>${stu.gender }td>
<td>${stu.phone }td>
<td>${stu.birthday }td>
<td>${stu.hobby }td>
<td>${stu.info }td>
<td><a href="EditStudentServlet?sid=${stu.sid}">更新a> <a href="#" onclick="doDeleteStu(${stu.sid})">删除a>td>
tr>
c:forEach>
table>
form>
body>
<script type="text/javascript">
function doDeleteStu(sid){
var flag = confirm("是否要确定删除？");
if(flag) {
window.location.href="DeleteStudentServlet?sid="+sid;
}else{
}
}
script>
html>
- listPage.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<meta charset="UTF-8">
<title>学生列表页title>
head>
<body>
<form action="SearchStudentServlet" method="post">
<table border="1" width="700">
<tr>
<td colspan="8">
按姓名查询：<input type="text" name="sname">
按性别查询：
<select name="sgender">
<option value="">请选择
<option value="男"> 男
<option value="女"> 女
select>
<input type="submit" value="查询" >
<a href="add.jsp">添加a>
td>
tr>
<tr align="center">
<td>编号td>
<td>姓名td>
<td>性别td>
<td>电话td>
<td>生日td>
<td>爱好td>
<td>简介td>
<td>操作td>
tr>
<c:forEach items="${pageBean.list }" var="stu">
<tr align="center">
<td>${stu.sid }td>
<td>${stu.sname }td>
<td>${stu.gender }td>
<td>${stu.phone }td>
<td>${stu.birthday }td>
<td>${stu.hobby }td>
<td>${stu.info }td>
<td><a href="EditStudentServlet?sid=${stu.sid}">更新a> <a href="#" onclick="doDeleteStu(${stu.sid})">删除a>td>
tr>
c:forEach>
<tr>
第${pageBean.currentPage } / ${pageBean.totalPage }
每页显示 ${pageBean.pageSize }条
总记录数 ${pageBean.totalSize }
<c:if test="${pageBean.currentPage != 1 }">
<a href="StudentListPageServlet?currentPage=1">首页a> |
<a href="StudentListPageServlet?currentPage=${pageBean.currentPage-1 }">上一页a>
c:if>
<c:forEach begin="1" end="${pageBean.totalPage }" var="i">
<c:if test="${pageBean.currentPage == i }">
${i }
c:if>
<c:if test="${pageBean.currentPage != i }">
<a href="StudentListPageServlet?currentPage=${i }">${i }a>
c:if>
c:forEach>
<c:if test="${pageBean.currentPage != pageBean.totalPage }">
<a href="StudentListPageServlet?currentPage=${pageBean.currentPage+1 }">下一页a> |
<a href="StudentListPageServlet?currentPage=${pageBean.totalPage }">尾页a>
c:if>
td>
tr>
table>
form>
body>
<script type="text/javascript">
function doDeleteStu(sid){
var flag = confirm("是否要确定删除？");
if(flag) {
window.location.href="DeleteStudentServlet?sid="+sid;
}else{
}
}
script>
html>
数据库
数据库简单写一个表就行啦（库好像被我删了，所以没有截图）
主要属性也就是Dao里学生bean的变量
sid;sname;gender; phone;hobby; birthday; info;
虽然仅仅是一个看似简单的项目，但是学这个花了我两天的时间。每个功能的实现都对我有一定的启发，所以把代码放上来。这给我的感觉是，以后要尊重每一个小到不能再小的功能，不能眼高手低。哎，加油吧。
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