IDEA+Java+JSP+Mysql+Tomcat实现Web教师信息管理系统

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.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

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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 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 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