IDEA+Java+Jsp+Mysql实现Web毕业设计选题系统
目录
一、系统介绍
1.开发环境
2.技术选型
3.系统功能
4.数据库文件
5.工程截图
二、系统展示
1.登录系统
2.管理员-主页面
3.管理员-学生管理-查看所有
4.管理员-学生管理-添加学生
5.管理员-教师管理-查看所有
6.管理员-教师管理-添加教师
7.管理员-课程管理-课程查询
8.管理员-课程管理-课程审核
9.管理员-系统维护-添加公告
10.管理员-系统维护-查看公告
11.管理员-系统维护-教师功能开关
12.管理员-系统维护-学生功能开关
13.教师-主页面
14.教师-个人中心-修改资料
15.教师-课题管理-所有课题
16.教师-课题管理-我的课题
17.教师-课题管理-添加课题
18.学生-主页面
19.学生-个人中心-修改资料
20.学生-个人中心-我的选题
21.学生-开始选题-选题列表
22.学生-开始选题-选题明细
三、部分代码
StudentManager
TeacherManager
TopicManager
DB
Login.jsp
index.jsp
news.jsp
四、其他
1.更多系统
Java+JSP系统系列实现
Java+Servlet系统系列实现
Java+SSM系统系列实现
Java+SSH系统系列实现
Java+Springboot系统系列实现
2.源码下载
3.运行项目
4.备注
5.支持博主
一、系统介绍
1.开发环境
开发工具：IDEA2018
JDK版本：Jdk1.8
Mysql版本：8.0.13
2.技术选型
Java+Jsp+Mysql
3.系统功能
1.管理员登录系统，管理学生信息，管理教师信息，管理课题信息，系统维护功能；
2.教师登录系统，修改个人信息，添加课题，查看课题；
3.学生登录系统，修改个人信息，查看选题，选择课题；
4.数据库文件
/*
Navicat Premium Data Transfer
Source Server : MYSQL
Source Server Type : MySQL
Source Server Version : 80013
Source Host : localhost:3306
Source Schema : jsp_select_topic
Target Server Type : MySQL
Target Server Version : 80013
File Encoding : 65001
Date: 12/04/2022 09:04:43
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for msg
-- ----------------------------
DROP TABLE IF EXISTS `msg`;
CREATE TABLE `msg` (
`title` varchar(100) CHARACTER SET gb2312 COLLATE gb2312_chinese_ci NOT NULL,
`text` varchar(1000) CHARACTER SET gb2312 COLLATE gb2312_chinese_ci NULL DEFAULT NULL,
PRIMARY KEY (`title`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = gb2312 COLLATE = gb2312_chinese_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of msg
-- ----------------------------
INSERT INTO `msg` VALUES ('毕业设计选题系统初步完成', '整个系统流程大致为：老师发布课题，管理员审核\r\n\r\n课题，学生选题，学生完成设计');
INSERT INTO `msg` VALUES ('学生相关功能', '请各位学生登录系统，给自己选择一个课题！');
-- ----------------------------
-- Table structure for student_info
-- ----------------------------
DROP TABLE IF EXISTS `student_info`;
CREATE TABLE `student_info` (
`sno` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`sname` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`ssex` varchar(2) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`sclass` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`stel` varchar(11) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`semail` varchar(50) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`sgroup` varchar(1) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`spassword` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL COMMENT '6-10位字符',
PRIMARY KEY (`sno`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = gbk COLLATE = gbk_chinese_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of student_info
-- ----------------------------
INSERT INTO `student_info` VALUES ('1001', '张三', '男', '4', '15523457667', '[email protected]', '2', '123456');
INSERT INTO `student_info` VALUES ('1002', '李四', '男', '2', '14456789876', '[email protected]', '2', '123456');
INSERT INTO `student_info` VALUES ('1003', '王五', '男', '3', '14456789876', '[email protected]', '3', '123456');
INSERT INTO `student_info` VALUES ('1004', '赵六', '男', '3', '14456789876', '[email protected]', '3', 'admin');
-- ----------------------------
-- Table structure for teacher_info
-- ----------------------------
DROP TABLE IF EXISTS `teacher_info`;
CREATE TABLE `teacher_info` (
`tno` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`tname` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`tsex` varchar(2) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`tdept` varchar(20) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`tdegree` varchar(8) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`ttitle` varchar(4) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`tright` bit(1) NOT NULL,
`ttel` varchar(11) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`temail` varchar(50) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`tgroup` varchar(1) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`tpassword` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
PRIMARY KEY (`tno`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = gbk COLLATE = gbk_chinese_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of teacher_info
-- ----------------------------
INSERT INTO `teacher_info` VALUES ('101', 'admin', '男', '计算机科学与技术系', '硕士', '教授', b'0', '15315614829', '[email protected]', '4', 'admin');
INSERT INTO `teacher_info` VALUES ('102', '王老师', '男', '计算机科学与技术系', '硕士', '教授', b'1', '15315614829', '[email protected]', '4', '123456');
INSERT INTO `teacher_info` VALUES ('103', '李老师', '男', '计算机科学与技术系', '硕士', '助教', b'1', '13456789876', '[email protected]', '4', 'admin');
-- ----------------------------
-- Table structure for topic_info
-- ----------------------------
DROP TABLE IF EXISTS `topic_info`;
CREATE TABLE `topic_info` (
`hno` varchar(5) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hname` varchar(50) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`htype` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hkind` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hsource` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hstatus` varchar(5) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hcontent` varchar(200) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`hresult` varchar(50) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`direction` varchar(200) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
`tno` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NOT NULL,
`sno` varchar(10) CHARACTER SET gbk COLLATE gbk_chinese_ci NULL DEFAULT NULL,
PRIMARY KEY (`hno`) USING BTREE,
INDEX `FK_topicinfo`(`sno`) USING BTREE,
INDEX `FK_topicinfo1`(`tno`) USING BTREE,
CONSTRAINT `FK_topicinfo` FOREIGN KEY (`sno`) REFERENCES `student_info` (`sno`) ON DELETE RESTRICT ON UPDATE RESTRICT,
CONSTRAINT `FK_topicinfo1` FOREIGN KEY (`tno`) REFERENCES `teacher_info` (`tno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = gbk COLLATE = gbk_chinese_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Records of topic_info
-- ----------------------------
INSERT INTO `topic_info` VALUES ('10001', '计算机技术体系研究', '毕业设计', '理论研究', '结合科研', 'true', '计算机技术体系研究', 'SCI发表相应论文', '无', '102', '1001');
INSERT INTO `topic_info` VALUES ('10002', '软件工程体系研究', '毕业设计', '软件研究', '结合科研', 'true', '软件工程体系研究', 'SCI发表论文', '无', '102', '1002');
SET FOREIGN_KEY_CHECKS = 1;
5.工程截图
二、系统展示
1.登录系统
2.管理员-主页面
3.管理员-学生管理-查看所有
4.管理员-学生管理-添加学生
5.管理员-教师管理-查看所有
6.管理员-教师管理-添加教师
7.管理员-课程管理-课程查询
8.管理员-课程管理-课程审核
9.管理员-系统维护-添加公告
10.管理员-系统维护-查看公告
11.管理员-系统维护-教师功能开关
12.管理员-系统维护-学生功能开关
13.教师-主页面
14.教师-个人中心-修改资料
15.教师-课题管理-所有课题
16.教师-课题管理-我的课题
17.教师-课题管理-添加课题
18.学生-主页面
19.学生-个人中心-修改资料
20.学生-个人中心-我的选题
21.学生-开始选题-选题列表
22.学生-开始选题-选题明细
三、部分代码
StudentManager
学生信息管理类，实现学生信息的增加，查看，删除。
package com.sjsq.service;
import com.sjsq.model.Student;
import com.sjsq.util.DB;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class StudentManager {
/**
* 添加新的单个Student信息到数据库中
* @param stu 存有学生信息的Student对象
* @return 保存成功返回true否则返回false
*/
public static boolean save(Student stu) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "insert into student_info values (?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = DB.prepare(conn, sql);//预编译插入语句
try {
/*
* 将stu中保存的信息分别放到数据库中对应表的对应列上
*/
pstmt.setString(1, stu.getNumber());
pstmt.setString(2, stu.getName());
pstmt.setString(3, stu.getSex());
pstmt.setString(4, stu.getSclass());
pstmt.setString(5, stu.getPhone());
pstmt.setString(6, stu.getEmail());
pstmt.setString(7, stu.getGroup());
pstmt.setString(8, stu.getPassword());
pstmt.execute();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
/**
* 获取所以学生信息
* @param students 存放所以学生信息
* @param pageNo 分页时的，当前页号
* @param pageSize 每页显示学生的个数
* @return 返回一共有多少页
*/
public static int getStudents(List students, int pageNo,
int pageSize) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from student_info limit " + (pageNo - 1) * pageSize
+ "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB.getResultSet(stmtCount,
"select count(*) from student_info");
try {
rsCount.next();
totalRecords = rsCount.getInt(1);//得到结果集中一共有多少条记录
while (rs.next()) {
Student student = new Student();
student.setEmail(rs.getString("semail"));
student.setGroup(rs.getString("sgroup"));
student.setName(rs.getString("sname"));
student.setNumber(rs.getString("sno"));
student.setPassword(rs.getString("spassword"));
student.setPhone(rs.getString("stel"));
student.setSclass(rs.getString("sclass"));
student.setSex(rs.getString("ssex"));
students.add(student);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
/**
* 按学号删除学生
* @param id 要删除学生的学号
* @return 删除成功返回true否则返回false
*/
public static boolean deleteBySno(String id) {
boolean b = false;
Connection conn = DB.getConn();
String sql = null;
sql = "delete from student_info where sno = '" + id + "'";
Statement stmt = DB.getStatement(conn);
try {
DB.executeUpdate(stmt, sql);
b = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
DB.close(stmt);
DB.close(conn);
}
return b;
}
/**
* 检查登录时学号和密码是否真确
* @param num 学号
* @param password 密码
* @return 正确返回true否则返回false
* @throws UserNotFoundException 抛出学号不存在的异常
* @throws PasswordNotCorrectException 抛出密码错误的异常
*/
public static Student check(String num, String password)
throws UserNotFoundException, PasswordNotCorrectException {
Student student = null;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from student_info where sno = '" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
try {
if (!rs.next()) {
throw new UserNotFoundException("用户不存在:" + num);
} else {
if (!password.equals(rs.getString("spassword"))) {
throw new PasswordNotCorrectException("密码不正确!");
}
}
student = new Student();
student.setEmail(rs.getString("semail"));
student.setGroup(rs.getString("sgroup"));
student.setName(rs.getString("sname"));
student.setNumber(rs.getString("sno"));
student.setPassword(rs.getString("spassword"));
student.setPhone(rs.getString("stel"));
student.setSclass(rs.getString("sclass"));
student.setSex(rs.getString("ssex"));
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return student;
}
/**
* 按学号获得学生信息
* @param num 学号
* @return 返回该学号的学生对象
*/
public static Student getBySno(String num) {
Connection conn = DB.getConn();
String sql = null;
sql = "select * from student_info where sno='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Student student = null;
try {
if (rs.next()) {
student = new Student();
student.setEmail(rs.getString("semail"));
student.setGroup(rs.getString("sgroup"));
student.setName(rs.getString("sname"));
student.setNumber(rs.getString("sno"));
student.setPassword(rs.getString("spassword"));
student.setPhone(rs.getString("stel"));
student.setSclass(rs.getString("sclass"));
student.setSex(rs.getString("ssex"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return student;
}
/**
* 更新学生stu的相关信息（学号不能更新）
* @param stu 存有新信息的学生对象
* @return 更新成功返回true否则返回false
*/
public static boolean update(Student stu) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "update student_info set spassword=?, sgroup=?, sname=?, ssex=?, stel=?, semail=?, sclass=? where sno = ?";
PreparedStatement pstmt = DB.prepare(conn, sql);
try {
pstmt.setString(1, stu.getPassword());
pstmt.setString(2, stu.getGroup());
pstmt.setString(3, stu.getName());
pstmt.setString(4, stu.getSex());
pstmt.setString(5, stu.getPhone());
pstmt.setString(6, stu.getEmail());
pstmt.setString(7, stu.getSclass());
pstmt.setString(8, stu.getNumber());
pstmt.executeUpdate();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
/**
* 按指定的条件获得所有符合条件的学生信息
* @param students 存放符合条件的学生信息的List
* @param pageNo 分页显示时，当前的页号
* @param pageSize 每页显示学生信息的数量
* @param sclass 学生所在的班级
* @param num 学号
* @param name 学生姓名
* @return 返回符合条件的学生列表
*/
public static int query(List students, int pageNo, int pageSize,
String sclass, String num, String name) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
/*
* 如何有些条件为空的进行如下处理，否则模糊查询时可能会报空指针异常
*/
if (sclass == null)
sclass = "";
if (name == null)
name = "";
if (num == null)
num = "";
/*
* 模糊查寻
*/
sql = "select * from student_info where sclass like '%" + sclass
+ "%' and sname like '%" + name + "%' and sno like '%" + num
+ "%'";
sql += "limit " + (pageNo - 1) * pageSize + "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB.getResultSet(stmtCount,
"select count(*) from student_info where sclass like '%"
+ sclass + "%' and sname like '%" + name
+ "%' and sno like '%" + num + "%'");
try {
rsCount.next();
totalRecords = rsCount.getInt(1);
while (rs.next()) {
Student student = new Student();
student.setEmail(rs.getString("semail"));
student.setGroup(rs.getString("sgroup"));
student.setName(rs.getString("sname"));
student.setNumber(rs.getString("sno"));
student.setPassword(rs.getString("spassword"));
student.setPhone(rs.getString("stel"));
student.setSclass(rs.getString("sclass"));
student.setSex(rs.getString("ssex"));
students.add(student);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
/**
* 批量导入excel表中学生的信息到数据库中（用到组件jxl.jar)
* @param file excel表所在的相对路径或绝对路径（包括文件完整的名字）
* @return 返回那些学号在数据库中已经存在的学号
*/
public static List adds(String file) {
Connection conn = DB.getConn();
List snumber = new ArrayList();
Workbook info;//定义工作簿
String sql = "insert into student_info values (?, ?, ?, ?, ?, ?, ?, ?)";
try {
info = Workbook.getWorkbook(new FileInputStream(file));
Sheet sheet = info.getSheet(0);//获得工作薄中表单对象
int size = sheet.getRows(); //获得表单的行数
for(int i = 1;i < size;i++){
Cell c = sheet.getCell(0,i);//获得表单的i行0列的单元格即学号
/*
* 查看学号是否已经存在
*/
if(StudentManager.getBySno(c.getContents().trim())!=null) {
snumber.add(c.getContents().trim());
continue;
}
PreparedStatement pstmt = DB.prepare(conn, sql);
for(int j=0; j<8; j++) {
c = sheet.getCell(j,i);
pstmt.setString(j+1, c.getContents().trim());
}
pstmt.execute();
}
} catch (BiffException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return snumber;
}
}
TeacherManager
教师信息管理类，实现教师信息的增加，查看，删除。
package com.sjsq.service;
import com.sjsq.model.Teacher;
import com.sjsq.util.DB;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class TeacherManager {
public static boolean save(Teacher te) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "insert into teacher_info values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = DB.prepare(conn, sql);
try {
pstmt.setString(1, te.getNumber());
pstmt.setString(2, te.getName());
pstmt.setString(3, te.getSex());
pstmt.setString(4, te.getDept());
pstmt.setString(5, te.getDegree());
pstmt.setString(6, te.getTitle());
pstmt.setShort(7, te.getRight());
pstmt.setString(8, te.getPhone());
pstmt.setString(9, te.getEmail());
pstmt.setString(10, te.getGroup());
pstmt.setString(11, te.getPassword());
pstmt.execute();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
public static int getTeachers(List teachers, int pageNo,
int pageSize) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from teacher_info limit " + (pageNo - 1) * pageSize
+ "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB.getResultSet(stmtCount,
"select count(*) from teacher_info");
try {
rsCount.next();
totalRecords = rsCount.getInt(1);
while (rs.next()) {
Teacher teacher = new Teacher();
teacher.setEmail(rs.getString("temail"));
teacher.setGroup(rs.getString("tgroup"));
teacher.setName(rs.getString("tname"));
teacher.setNumber(rs.getString("tno"));
teacher.setPassword(rs.getString("tpassword"));
teacher.setPhone(rs.getString("ttel"));
teacher.setDept(rs.getString("tdept"));
teacher.setSex(rs.getString("tsex"));
teacher.setDegree(rs.getString("tdegree"));
teacher.setRight(rs.getShort("tright"));
teacher.setTitle(rs.getString("ttitle"));
teachers.add(teacher);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
public static boolean deleteByTno(String id) {
boolean b = false;
Connection conn = DB.getConn();
String sql = null;
sql = "delete from teacher_info where tno = '" + id + "'";
Statement stmt = DB.getStatement(conn);
try {
DB.executeUpdate(stmt, sql);
b = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
DB.close(stmt);
DB.close(conn);
}
return b;
}
public static Teacher check(String num, String password)
throws UserNotFoundException, PasswordNotCorrectException {
Teacher teacher = null;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from teacher_info where tno = '" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
try {
if (!rs.next()) {
throw new UserNotFoundException("用户不存在:" + num);
} else {
if (!password.equals(rs.getString("tpassword"))) {
throw new PasswordNotCorrectException("密码不正确!");
}
}
teacher = new Teacher();
teacher.setEmail(rs.getString("temail"));
teacher.setGroup(rs.getString("tgroup"));
teacher.setName(rs.getString("tname"));
teacher.setNumber(rs.getString("tno"));
teacher.setPassword(rs.getString("tpassword"));
teacher.setPhone(rs.getString("ttel"));
teacher.setDept(rs.getString("tdept"));
teacher.setSex(rs.getString("tsex"));
teacher.setDegree(rs.getString("tdegree"));
teacher.setRight(rs.getShort("tright"));
teacher.setTitle(rs.getString("ttitle"));
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return teacher;
}
public static Teacher getByTno(String num) {
Connection conn = DB.getConn();
String sql = null;
sql = "select * from teacher_info where tno='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Teacher teacher = null;
try {
if (rs.next()) {
teacher = new Teacher();
teacher.setEmail(rs.getString("temail"));
teacher.setGroup(rs.getString("tgroup"));
teacher.setName(rs.getString("tname"));
teacher.setNumber(rs.getString("tno"));
teacher.setPassword(rs.getString("tpassword"));
teacher.setPhone(rs.getString("ttel"));
teacher.setDept(rs.getString("tdept"));
teacher.setSex(rs.getString("tsex"));
teacher.setDegree(rs.getString("tdegree"));
teacher.setRight(rs.getShort("tright"));
teacher.setTitle(rs.getString("ttitle"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return teacher;
}
public static boolean update(Teacher te) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "update teacher_info set tpassword=?, tgroup=?, tname=?, tsex=?, ttel=?, temail=?, tdept=?, ttitle=?, tright=?, tdegree=? where tno = ?";
PreparedStatement pstmt = DB.prepare(conn, sql);
try {
pstmt.setString(1, te.getPassword());
pstmt.setString(2, te.getGroup());
pstmt.setString(3, te.getName());
pstmt.setString(4, te.getSex());
pstmt.setString(5, te.getPhone());
pstmt.setString(6, te.getEmail());
pstmt.setString(7, te.getDept());
pstmt.setString(8, te.getTitle());
pstmt.setShort(9, te.getRight());
pstmt.setString(10, te.getDegree());
pstmt.setString(11, te.getNumber());
pstmt.executeUpdate();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
public static int query(List teachers, int pageNo, int pageSize,
String dept, String num, String name) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
if (dept == null)
dept = "";
if (name == null)
name = "";
if (num == null)
num = "";
sql = "select * from teacher_info where tdept like '%" + dept
+ "%' and tname like '%" + name + "%' and tno like '%" + num
+ "%'";
sql += "limit " + (pageNo - 1) * pageSize + "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB.getResultSet(stmtCount,
"select count(*) from teacher_info where tdept like '%" + dept
+ "%' and tname like '%" + name + "%' and tno like '%"
+ num + "%'");
try {
rsCount.next();
totalRecords = rsCount.getInt(1);
while (rs.next()) {
Teacher teacher = new Teacher();
teacher.setEmail(rs.getString("temail"));
teacher.setGroup(rs.getString("tgroup"));
teacher.setName(rs.getString("tname"));
teacher.setNumber(rs.getString("tno"));
teacher.setPassword(rs.getString("tpassword"));
teacher.setPhone(rs.getString("ttel"));
teacher.setDept(rs.getString("tdept"));
teacher.setSex(rs.getString("tsex"));
teacher.setDegree(rs.getString("tdegree"));
teacher.setRight(rs.getShort("tright"));
teacher.setTitle(rs.getString("ttitle"));
teachers.add(teacher);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
public static List adds(String file) {
Connection conn = DB.getConn();
Workbook info;
List tnumber = new ArrayList();
String sql = "insert into teacher_info values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
try {
info = Workbook.getWorkbook(new FileInputStream(file));
Sheet sheet = info.getSheet(0);
int size = sheet.getRows();
for (int i = 1; i < size; i++) {
Cell c = sheet.getCell(0, i);
if (TeacherManager.getByTno(c.getContents().trim()) != null) {
tnumber.add(c.getContents().trim());
continue;
}
PreparedStatement pstmt = DB.prepare(conn, sql);
for (int j = 0; j < 11; j++) {
c = sheet.getCell(j, i);
if (j != 6) {
pstmt.setString(j + 1, c.getContents().trim());
} else
pstmt.setShort(j + 1, Short.parseShort(c.getContents()));
}
pstmt.execute();
}
} catch (BiffException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return tnumber;
}
}
TopicManager
选题信息管理，实现选题新的增加，修改，查看，删除。
package com.sjsq.service;
import com.sjsq.model.Topic;
import com.sjsq.util.DB;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class TopicManager {
public static boolean save(Topic t) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "insert into topic_info values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = DB.prepare(conn, sql);
try {
pstmt.setString(1, t.getNumber());
pstmt.setString(2, t.getName());
pstmt.setString(3, t.getType());
pstmt.setString(4, t.getKind());
pstmt.setString(5, t.getSource());
pstmt.setString(6, t.getStatus());
pstmt.setString(7, t.getContent());
pstmt.setString(8, t.getResult());
pstmt.setString(9, t.getDirection());
pstmt.setString(10, t.getTnumber());
pstmt.setString(11, t.getSnumber());
pstmt.execute();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
public static int getTopics(List topics, int pageNo,
int pageSize) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from topic_info limit " + (pageNo - 1) * pageSize
+ "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB
.getResultSet(stmtCount, "select count(*) from topic_info");
try {
rsCount.next();
totalRecords = rsCount.getInt(1);
while (rs.next()) {
Topic topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
topics.add(topic);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
public static boolean deleteByHno(String hno) {
boolean b = false;
Connection conn = DB.getConn();
String sql = null;
sql = "delete from topic_info where hno = '" + hno + "'";
Statement stmt = DB.getStatement(conn);
try {
DB.executeUpdate(stmt, sql);
b = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
DB.close(stmt);
DB.close(conn);
}
return b;
}
public static boolean check(String tno, String hname) {
boolean b = false;
Connection conn = DB.getConn();
String sql = null;
sql = "select * from topic_info where tno = '" + tno + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
try {
if (rs.next()) b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return b;
}
public static boolean update(Topic t) {
Connection conn = DB.getConn();
String sql = null;
boolean b = false;
sql = "update topic_info set htype=?, tno=?, hname=?, hsource=?, hkind=?, hstatus=?, hresult=?, sno=?, direction=?, hcontent=? where hno = ?";
PreparedStatement pstmt = DB.prepare(conn, sql);
try {
pstmt.setString(1, t.getType());
pstmt.setString(2, t.getTnumber());
pstmt.setString(3, t.getName());
pstmt.setString(4, t.getSource());
pstmt.setString(5, t.getKind());
pstmt.setString(6, t.getStatus());
pstmt.setString(7, t.getResult());
pstmt.setString(8, t.getSnumber());
pstmt.setString(9, t.getDirection());
pstmt.setString(10, t.getContent());
pstmt.setString(11, t.getNumber());
pstmt.executeUpdate();
b = true;
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(pstmt);
DB.close(conn);
}
return b;
}
public static Topic getByNum(String num) {
Connection conn = DB.getConn();
String sql = null;
sql = "select * from topic_info where hno='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Topic topic = null;
try {
if (rs.next()) {
topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return topic;
}
public static List getByTno(String num) {
Connection conn = DB.getConn();
String sql = null;
List topics = new ArrayList();
sql = "select * from topic_info where tno='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Topic topic = null;
try {
while (rs.next()) {
topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
topics.add(topic);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return topics;
}
public static int query(List topics, int pageNo, int pageSize, String str, String kind, String name) {
int totalRecords = -1;
Connection conn = DB.getConn();
String sql = null;
if (str == null)
str = "";
if (kind == null)
kind = "";
if (name == null)
name = "";
sql = "select * from topic_info where hname like '%" + name
+ "%' and htype like '%" + str + "%' and hkind like '%" + kind + "%'";
sql += "limit " + (pageNo - 1) * pageSize + "," + pageSize;
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Statement stmtCount = DB.getStatement(conn);
ResultSet rsCount = null;
rsCount = DB
.getResultSet(stmtCount, "select count(*) from topic_info where hname like '%" + name
+ "%' and htype like '%" + str + "%' and hkind like '%" + kind + "%'");
try {
if (rsCount != null) rsCount.next();
totalRecords = rsCount.getInt(1);
while (rs.next()) {
Topic topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
topics.add(topic);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rsCount);
DB.close(stmtCount);
DB.close(rs);
DB.close(stmt);
DB.close(conn);
}
return totalRecords;
}
public static List getByStatus(String num) {
Connection conn = DB.getConn();
List topics = new ArrayList();
String sql = null;
sql = "select * from topic_info where hstatus='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Topic topic = null;
try {
while (rs.next()) {
topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
topics.add(topic);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return topics;
}
public static Topic getBySnum(String num) {
Connection conn = DB.getConn();
String sql = null;
sql = "select * from topic_info where sno='" + num + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Topic topic = null;
try {
if (rs.next()) {
topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return topic;
}
public static Topic getByTnumAndHname(String tnum, String hname) {
Connection conn = DB.getConn();
String sql = null;
sql = "select * from topic_info where tno='" + tnum + "' and hname='" + hname + "'";
Statement stmt = DB.getStatement(conn);
ResultSet rs = DB.getResultSet(stmt, sql);
Topic topic = null;
try {
if (rs.next()) {
topic = new Topic();
topic.setContent(rs.getString("hcontent"));
topic.setDirection(rs.getString("direction"));
topic.setKind(rs.getString("hkind"));
topic.setName(rs.getString("hname"));
topic.setNumber(rs.getString("hno"));
topic.setResult(rs.getString("hresult"));
topic.setSnumber(rs.getString("sno"));
topic.setSource(rs.getString("hsource"));
topic.setStatus(rs.getString("hstatus"));
topic.setType(rs.getString("htype"));
topic.setTnumber(rs.getString("tno"));
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(conn);
}
return topic;
}
}
DB
数据库连接类
package com.sjsq.util;
import java.sql.*;
/**
*
* 对数据库连接的封装
*
*/
public class DB {
/**
* 获得对要用的数据库的连接
* @return 返回数据库的连接
*/
public static Connection getConn() {
Connection conn = null;
try {
Class.forName("com.mysql.cj.jdbc.Driver");//数据库的驱动类 若数据库为sqlserver 应为： （"com.microsoft.sqlserver.jdbc.SQLServerDriver"）
conn = DriverManager.getConnection("jdbc:mysql://localhost/jsp_select_topic?serverTimezone=UTC","root","admin");
//jdbc：myseql数据库的类型 localhost:3306本机3306端口 select_course 数据库名 user=root 用户名为root password=root 用户密码为root
// 若是sqlserver应为("jdbc:sqlserver://localhst:1422;databaseName=select_course", "root", "root");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
/**
* 获得多数据库的预编译的 SQL 语句的对象
* @param conn 数据库的连接
* @param sql 要执行的SQL语句
* @return 返回预编译的 SQL 语句的对象
*/
public static PreparedStatement prepare(Connection conn, String sql) {
PreparedStatement pstmt = null;
try {
if(conn != null) {
pstmt = conn.prepareStatement(sql);
}
} catch (SQLException e) {
e.printStackTrace();
}
return pstmt;
}
/**
*
* @param conn 数据库的连接
* @return 返回执行静态 SQL 语句对象
*/
public static Statement getStatement(Connection conn) {
Statement stmt = null;
try {
if(conn != null) {
stmt = conn.createStatement();
}
} catch (SQLException e) {
e.printStackTrace();
}
return stmt;
}
/**
*
* @param stmt 执行静态SQl语句的对象
* @param sql 要执行的SQL语句
* @return 执行后的结果集
*/
public static ResultSet getResultSet(Statement stmt, String sql) {
ResultSet rs = null;
try {
if(stmt != null) {
rs = stmt.executeQuery(sql);
}
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
/**
*
* @param stmt 静态执行sql语句的对象
* @param sql 要执行的SQL语句
*/
public static void executeUpdate(Statement stmt, String sql) {
try {
if(stmt != null) {
stmt.executeUpdate(sql);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 关闭数据库的连接
* @param conn 数据库的连接
*/
public static void close(Connection conn) {
try {
if(conn != null) {
conn.close();
conn = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 关闭Statement
* @param stmt
*/
public static void close(Statement stmt) {
try {
if(stmt != null) {
stmt.close();
stmt = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 关闭ResultSet
* @param rs
*/
public static void close(ResultSet rs) {
try {
if(rs != null) {
rs.close();
rs = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
Login.jsp
登录前端页面，实现用户登录，判断用户类型，调用登录函数。
<%@ page language="java" import="com.sjsq.model.Student" pageEncoding="UTF-8" %>
<%@ page import="com.sjsq.model.Teacher" %>
<%@ page import="com.sjsq.service.PasswordNotCorrectException" %>
<%@ page import="com.sjsq.service.StudentManager" %>
<%@ page import="com.sjsq.service.TeacherManager" %>
<%@ page import="com.sjsq.service.UserNotFoundException" %>
<%
String username = request.getParameter("user_no").trim();
String password = request.getParameter("user_pass").trim();
int type = Integer.parseInt(request.getParameter("u_type").trim());
try {
if (type == 1) {
Student student = StudentManager.check(username, password);
session.setAttribute("user", student);
session.setAttribute("type", type);
response.sendRedirect("student/student.jsp");
}
if (type == 2) {
Teacher teacher = TeacherManager.check(username, password);
session.setAttribute("user", teacher);
session.setAttribute("type", type);
response.sendRedirect("teacher/teacher.jsp");
}
if (type == 3) {
Teacher teacher = TeacherManager.check(username, password);
if (teacher.getRight() == 0) {
session.setAttribute("user", teacher);
session.setAttribute("type", type);
response.sendRedirect("admin/admin.jsp");
} else {
out.println("您没有管理员权限!");
return;
}
}
} catch (UserNotFoundException e) {
out.println(e.getMessage());
return;
} catch (PasswordNotCorrectException e) {
out.println(e.getMessage());
return;
}
%>
index.jsp
用户登录界面
<%@page pageEncoding="UTF-8" %>
<%@page import="com.sjsq.service.MsgManager" %>
毕业设计选题系统-用户登录
毕业设计选题系统
news.jsp
新闻公告界面
<%@page pageEncoding="UTF-8" import="com.sjsq.service.MsgManager" %>
公告详情
公告详情
<%
String number = new String(request.getParameter("id").getBytes("UTF-8"), "UTF-8");
String text = MsgManager.getTexts(number);
%>
标题：
<%=number%>
内容：
<%=text%>
四、其他
1.更多系统
Java+JSP系统系列实现
Java+JSP实现学生图书管理系统
Java+JSP实现学生信息管理系统
Java+JSP实现用户信息管理系统
Java+JSP实现教师信息管理系统
Java+JSP实现学生宿舍管理系统
Java+JSP实现商品信息管理系统
Java+JSP实现宠物信息管理系统
Java+JSP实现学生成绩管理系统
Java+Servlet系统系列实现
Java+Servlet+JSP实现航空订票系统
Java+Servlet+JSP实现新闻发布系统
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Java+Servlet+JSP实现学生成绩管理系统-1
Java+Servlet+JSP实现学生成绩管理系统-2
Java+SSM系统系列实现
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1.更多JavaWeb系统请关注专栏。
https://blog.csdn.net/helongqiang/category_10020130.html
https://blog.csdn.net/helongqiang/category_10020130.html
2.更多JavaSwing系统请关注专栏。
https://blog.csdn.net/helongqiang/category_6229101.html
https://blog.csdn.net/helongqiang/category_6229101.html
2.源码下载
sql在sql文件夹下面
系统账号信息
1.管理员
账号：101 密码：admin
2.教师
账号：102 密码：123456
3.学生
账号：1001 密码：123456
Java+Jsp+Mysql实现Web毕业设计选题系统
3.运行项目
关注B站：水坚石青
后期有更多干货视频推出！！！
IDEA如何导入JavaWeb项目超详细视频教程
4.备注
如有侵权请联系我删除。
5.支持博主
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