IDEA+Java+Jsp+Mysql实现Web毕业设计选题系统
Posted 水坚石青
tags:
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目录
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', '336688@qq.com', '2', '123456');
INSERT INTO `student_info` VALUES ('1002', '李四', '男', '2', '14456789876', '6699334@qq.com', '2', '123456');
INSERT INTO `student_info` VALUES ('1003', '王五', '男', '3', '14456789876', '6699334@qq.com', '3', '123456');
INSERT INTO `student_info` VALUES ('1004', '赵六', '男', '3', '14456789876', '6699334@qq.com', '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', '12345678@qq.com', '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', '1234567844@qq.com', '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', '1234567844@qq.com', '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<Student> 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<Student> 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<String> adds(String file)
Connection conn = DB.getConn();
List<String> snumber = new ArrayList<String>();
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<Teacher> 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<Teacher> 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<String> adds(String file)
Connection conn = DB.getConn();
Workbook info;
List<String> tnumber = new ArrayList<String>();
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<Topic> 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<Topic> getByTno(String num)
Connection conn = DB.getConn();
String sql = null;
List<Topic> topics = new ArrayList<Topic>();
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<Topic> 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"));
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