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.查询教师信息
3.添加教师信息
4.修改教师信息
三、部分代码
AdminDaoImpl
TeacherDaoImpl
main.jsp
teacher-add.jsp
teacher-delete.jsp
teacher-update.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
开发工具:IDEA2018
JDK版本:Jdk1.8
Mysql版本:8.0.13
Java+Jsp+Mysql
1.管理员登录系统;
2.管理员查询教师信息;
3.管理员新增教师信息;
4.管理员修改教师信息;
5.管理员删除教师信息;
/* Navicat Premium Data Transfer Source Server : MYSQL Source Server Type : MySQL Source Server Version : 80013 Source Host : localhost:3306 Source Schema : jsp_teacher_management Target Server Type : MySQL Target Server Version : 80013 File Encoding : 65001 Date: 14/01/2022 15:36:09 */ SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; -- ---------------------------- -- Table structure for admin -- ---------------------------- DROP TABLE IF EXISTS `admin`; CREATE TABLE `admin` ( `username` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL, `password` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL ) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = DYNAMIC; -- ---------------------------- -- Records of admin -- ---------------------------- INSERT INTO `admin` VALUES ('admin', 'admin'); -- ---------------------------- -- Table structure for teacher -- ---------------------------- DROP TABLE IF EXISTS `teacher`; CREATE TABLE `teacher` ( `id` int(11) NOT NULL, `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, `sex` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, `subject` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, `salary` double NULL DEFAULT NULL, `workTime` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, PRIMARY KEY (`id`) USING BTREE ) ENGINE = InnoDB AUTO_INCREMENT = 1004 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = DYNAMIC; -- ---------------------------- -- Records of teacher -- ---------------------------- INSERT INTO `teacher` VALUES (1001, '王老师', '男', '语文', 30000, '2022-01-01'); INSERT INTO `teacher` VALUES (1002, '张老师', '女', '英语', 30000, '2022-01-01'); INSERT INTO `teacher` VALUES (1003, '黄老师', '男', '数学', 30000, '2022-01-14'); INSERT INTO `teacher` VALUES (1004, '杨老师', '女', '英语', 30000, '2022-01-14'); INSERT INTO `teacher` VALUES (1005, '吴老师', '女', '音乐', 30000, '2022-01-14'); SET FOREIGN_KEY_CHECKS = 1;
package com.sjsq.dao.impl; import com.sjsq.dao.AdminDao; import com.sjsq.utils.DBUtil; import com.sjsq.vo.Admin; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; /** * @author: shuijianshiqing * @date: 2021-12-31 * @description: 登录系统实现 */ public class AdminDaoImpl implements AdminDao { /** * 登录系统 * @param admin * @return */ @Override public Admin login(Admin admin) { Connection con = null; PreparedStatement ps = null; ResultSet rs = null; try { // 1.获取数据库连接 con = DBUtil.getConnection(); // 2.写sql String sql = "select * from admin where username = ? and password = ?"; // 3.预编译 ps = con.prepareStatement(sql); // 4.设置值 ps.setObject(1, admin.getUsername()); ps.setObject(2, admin.getPassword()); rs = ps.executeQuery(); Admin adminLogin = null; if (rs.next()) { adminLogin = new Admin(); // 从数据库中获取值到实体类的setter方法中 adminLogin.setUsername(rs.getString("username")); adminLogin.setPassword(rs.getString("password")); // 返回的是你查询出来的完整的对象 return adminLogin; } } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } finally { // 关闭资源,避免出现异常 DBUtil.close(con, ps, rs); } return null; } }
package com.sjsq.dao.impl; import com.sjsq.dao.TeacherDao; import com.sjsq.utils.DBUtil; import com.sjsq.vo.Teacher; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; /** * @author: shuijianshiqing * @date: 2021-12-31 * @description: */ public class TeacherDaoImpl implements TeacherDao { /** * 查询教师信息 * @param sql * @param arr * @return */ @Override public List<Teacher> selectAll(String sql, Object[] arr) { Connection con = null; PreparedStatement ps = null; ResultSet rs = null; try { // 1.连接数据库 con = DBUtil.getConnection(); // 2.预编译 ps = con.prepareStatement(sql); if (arr != null) { for (int i = 0; i < arr.length; i++) { // 传入sql的参数,向上转型,某个栏位的查询 ps.setObject(i + 1, arr[i]); } } // 3.执行sql rs = ps.executeQuery(); // 4.保存查询出来的数据到list List<Teacher> list = new ArrayList<>(); while (rs.next()) { Teacher teacher = new Teacher(); teacher.setId(rs.getInt("id")); teacher.setName(rs.getString("name")); teacher.setSex(rs.getString("sex")); teacher.setSubject(rs.getString("subject")); teacher.setSalary(rs.getDouble("salary")); teacher.setWorkTime(rs.getString("workTime")); list.add(teacher); } return list; } catch (Exception e) { e.printStackTrace(); } finally { // 关闭链接,避免数据库连接过多 DBUtil.close(con, ps, rs); } return null; } /** * 根据教职工号查询教师信息 * @param id * @return */ @Override public Teacher selectTeacher(Integer id) { Connection con = null; PreparedStatement ps = null; ResultSet rs = null; try { // 1.连接数据库 con = DBUtil.getConnection(); // 2.预编译 String sql = "select * from Teacher where id = ?"; ps = con.prepareStatement(sql); ps.setInt(1,id); // 3.执行sql rs = ps.executeQuery(); while (rs.next()){ Teacher teacher = new Teacher(); teacher.setId(rs.getInt("id")); teacher.setName(rs.getString("name")); teacher.setSex(rs.getString("sex")); teacher.setSubject(rs.getString("subject")); teacher.setSalary(rs.getDouble("salary")); teacher.setWorkTime(rs.getString("workTime")); return teacher; } } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); }finally { // 关闭资源,避免出现异常 DBUtil.close(con,ps,rs); } return null; } /** * 新增教师信息 * @param teacher * @return */ @Override public boolean addTeacher(Teacher teacher) { String sql = "insert into teacher values (?,?,?,?,?,?)"; List<Object> list = new ArrayList<Object>(); list.add(teacher.getId()); list.add(teacher.getName()); list.add(teacher.getSex()); list.add(teacher.getSubject()); list.add(teacher.getSalary()); list.add(teacher.getWorkTime()); boolean flag = DBUtil.addUpdateDelete(sql,list.toArray()); if(flag){ return true; }else { return false; } } /** * 更新教师信息 * @param teacher * @return */ @Override public boolean updateTeacher(Teacher teacher) { String sql = "update teacher set name=?,sex=?,subject=?,salary=?,workTime=? where id=?"; List<Object> list = new ArrayList<Object>(); list.add(teacher.getName()); list.add(teacher.getSex()); list.add(teacher.getSubject()); list.add(teacher.getSalary()); list.add(teacher.getWorkTime()); // 注意id在最后面 list.add(teacher.getId()); boolean flag = DBUtil.addUpdateDelete(sql,list.toArray()); if(flag){ return true; }else { return false; } } /** * 删除教师信息 * @param id * @return */ @Override public boolean deleteTeacher(Integer id) { String sql = "delete from teacher where id=?"; List<Object> list = new ArrayList<Object>(); list.add(id); boolean flag = DBUtil.addUpdateDelete(sql,list.toArray()); if(flag){ return true; }else { return false; } } }
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %> <%@ page import="com.sjsq.service.TeacherService" %> <%@ page import="com.sjsq.service.impl.TeacherServiceImpl" %> <%@ page import="com.sjsq.vo.Teacher" %> <%@ page import="java.util.List" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>查看教师</title> <link rel="stylesheet" type="text/css" href="css/common.css"> <link rel="stylesheet" type="text/css" href="css/main.css"> <style type="text/css"> </style> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <% // 设置获取注册时的编码为UTF-8 request.setCharacterEncoding("UTF-8"); TeacherService studentService = new TeacherServiceImpl(); // 定义一个学生类 Teacher teacher = new Teacher(); // 获取上一个页面传过来的值 if (request.getParameter("id") != null && request.getParameter("id") != "") { Integer id = Integer.parseInt(request.getParameter("id")); teacher.setId(id); } // 获取所有教师 List<Teacher> list = studentService.selectAll(teacher); %> <h1>教师列表</h1> <hr/> <div id="before"> <form action="main.jsp" method="post"> 请输入教职工号:<input type="text" name="id" placeholder="输入教职工号搜索"> <input type="submit" value="查询"/> </form> </div> <br> <table align="center" border="1" cellspacing="0"> <tr bgcolor="#6495ed";> <th>教职工号</th> <th>教师姓名</th> <th>教师性别</th> <th>教学科目</th> <th>教师工资</th> <th>入职时间</th> <th colspan="2">操作</th> </tr> <% for (int i = 0; i < list.size(); i++) { Teacher t = list.get(i); %> <tr id="content"> <td><%=t.getId()%> </td> <td><%=t.getName()%> </td> <td><%=t.getSex()%> </td> <td><%=t.getSubject()%> </td> <td><%=t.getSalary()%> </td> <td><%=t.getWorkTime()%> </td> <td> <a href="teacher-update.jsp?id=<%=t.getId()%>">修改</a> <a href="teacher-delete.jsp?id=<%=t.getId()%>">删除</a> </td> </tr> <% } %> </table> <br> <table align="center"> <tr> <td><a href="teacher-add.jsp">新增教师</a></td> </tr> </table> </body> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>新增教师</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>新增教师</h1> <hr/> <div id="before"> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="teacher-add-do.jsp" method="post" name="addForm"> <div> <tr> <label>教职工号:</label> <input type="text" name="id" id="id" placeholder="请输入教职工号"> </tr> </div> <div> <tr> <label>教师姓名:</label> <input type="text" name="name" id="name" placeholder="请输入教师姓名"> </tr> </div> <div> <tr> <label>教师性别:</label> <input type="text" name="sex" id="sex" placeholder="请输入教师性别"> </tr> </div> <div> <tr> <label>教学科目:</label> <input type="text" name="subject" id="subject" placeholder="请输入教学科目"> </tr> </div> <div> <tr> <label>教师工资:</label> <input type="text" name="salary" id="salary" placeholder="请输入教师工资"> </tr> </div> <div> <tr> <label>工作时间:</label> <input type="text" name="workTime" id="workTime" placeholder="请输入工作时间"> </tr> </div> <br> <div id="submit"> <tr> <button type="submit" onclick="return checkForm()">添加</button> <button type="reset">重置</button> </tr> </div> </form> <script type="text/javascript"> function checkForm() { var id = addForm.id.value; var name = addForm.name.value; var salary = addForm.salary.value; // 教职工号和姓名不能为空 if (id == "" || id == null) { alert("请输入教职工号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入教师姓名"); addForm.name.focus(); return false; } else if (salary == "" || salary == null) { alert("请输入教工资"); addForm.salary.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
<%@ page import="com.sjsq.service.TeacherService" %> <%@ page import="com.sjsq.service.impl.TeacherServiceImpl" %> <%@ page import="com.sjsq.vo.Teacher" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>删除教师</title> </head> <body> <% // 设置获取注册时的编码为UTF-8 request.setCharacterEncoding("UTF-8"); //获取main.jsp页面的id Integer id = Integer.parseInt(request.getParameter("id")); // 删除学生 TeacherService TeacherService = new TeacherServiceImpl(); Teacher teacher = new Teacher(); teacher = TeacherService.selectTeacher(id); System.out.println("删除的教师信息"); System.out.println(teacher); boolean flag = TeacherService.deleteTeacher(id); if (flag) { response.sendRedirect("main.jsp"); } else { response.sendRedirect("error.jsp"); } %> </body> </html>
<%@ page import="com.sjsq.service.TeacherService" %> <%@ page import="com.sjsq.service.impl.TeacherServiceImpl" %> <%@ page import="com.sjsq.vo.Teacher" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改教师</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>修改教师</h1> <hr/> <% //获取main.jsp页面的id Integer id = Integer.parseInt(request.getParameter("id")); TeacherService teacherService = new TeacherServiceImpl(); Teacher teacher = teacherService.selectTeacher(id); %> <div> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="teacher-update-do.jsp" method="post" id="addForm"> <div> <%-- 这里教职工号不能修改 --%> <tr> <label>教职工号:</label> <input type="text" name="id" id="id" placeholder="请输入教职工号" value="<%=teacher.getId()%>" readonly="true"> </tr> </div> <div> <tr> <label>教师姓名:</label> <input type="text" name="name" id="name" placeholder="请输入教师姓名" value="<%=teacher.getName()%>" autofocus="autofocus"> </tr> </div> <div> <tr> <label>教师性别:</label> <input type="text" name="sex" id="sex" placeholder="请输入教师性别" value="<%=teacher.getSex()%>"> </tr> </div> <div> <tr> <label>教学科目:</label> <input type="text" name="subject" id="subject" placeholder="请输入教学科目" value="<%=teacher.getSubject()%>"> </tr> </div> <div> <tr> <label>教师工资:</label> <input type="text" name="salary" id="salary" placeholder="请输入教师工资" value="<%=teacher.getSalary()%>"> </tr> </div> <div> <tr> <label>工作时间:</label> <input type="text" name="workTime" id="workTime" placeholder="请输入工作时间" value="<%=teacher.getWorkTime()%>"> </tr> </div> <br> <div id="submit"> <tr> <button type="submit" onclick="return checkForm()">修改</button> <button type="reset">重置</button> </tr> </div> </form> <script type="text/javascript"> function checkForm() { var id = addForm.id.value; var name = addForm.name.value; // 教职工号和姓名不能为空 if (id == "" || id == null) { alert("请输入教职工号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入教师姓名"); addForm.name.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
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