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；
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；
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_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;
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
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;
}
}
TeacherDaoImpl
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;
}
}
}
main.jsp
<%@ 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>
teacher-add.jsp
<%@ 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>
teacher-delete.jsp
<%@ 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>
teacher-update.jsp
<%@ 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>
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
Java+Springboot+H-ui+Maven实现营销管理系统
Java+Springboot+Bootstrap+Maven实现网上商城系统
Java+Springboot+Bootstrap+Maven实现景区旅游管理系统
1.更多JavaWeb系统请关注专栏。
https://blog.csdn.net/helongqiang/category_10020130.html2.更多JavaSwing系统请关注专栏。
https://blog.csdn.net/helongqiang/category_6229101.html2.源码下载
sql在sql文件夹下面
3.运行项目
如果您想详细了解代码的实现，已经有一个录好的相关视频可能会帮助到您！具体的实现方式都差不多，只是实体类有些差别！
视频传送门在下面
4.备注
如有侵权请联系我删除。
5.支持博主
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