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.登录系统；

2.管理员对商品信息的增删改查。

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_goods_management
 Target Server Type    : MySQL
 Target Server Version : 80013
 File Encoding         : 65001
 Date: 01/03/2022 14:34:48
*/
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 goods
-- ----------------------------
DROP TABLE IF EXISTS `goods`;
CREATE TABLE `goods`  (
  `id` int(11) NOT NULL,
  `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
  `num` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,
  `address` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL
) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = DYNAMIC;
-- ----------------------------
-- Records of goods
-- ----------------------------
INSERT INTO `goods` VALUES (1001, '方便面', '30', '辽宁沈阳');
INSERT INTO `goods` VALUES (1002, '果粒橙', '50', '广东深圳');
INSERT INTO `goods` VALUES (1003, '苹果', '80', '甘肃天水');
INSERT INTO `goods` VALUES (1004, '牛肉面', '100', '甘肃兰州');
SET FOREIGN_KEY_CHECKS = 1;

5.系统截图

二、系统展示

1.登录系统

2.系统主页

3.增加商品

4.修改商品

三、部分代码

AdminDaoImpl

package com.sjsq.dao.impl;
import com.sjsq.dao.AdminDao;
import com.sjsq.utils.DBUtil;
import com.sjsq.entity.Admin;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
 * @author: shuijianshiqing
 * @date: 2022-03-01
 * @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;
    }
}

GoodsDaoImpl

package com.sjsq.dao.impl;
import com.sjsq.dao.GoodsDao;
import com.sjsq.entity.Goods;
import com.sjsq.entity.Goods;
import com.sjsq.utils.DBUtil;
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: 2022-03-01
 * @description:
 */
public class GoodsDaoImpl implements GoodsDao {
    @Override
    public List<Goods> 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<Goods> list = new ArrayList<>();
            while (rs.next()) {
                Goods goods = new Goods();
                goods.setId(rs.getInt("id"));
                goods.setName(rs.getString("name"));
                goods.setNum(rs.getString("num"));
                goods.setAddress(rs.getString("address"));
                list.add(goods);
            }
            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;
    }
    @Override
    public Goods selectGoods(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 goods where id = ?";
            ps = con.prepareStatement(sql);
            ps.setInt(1, id);
            // 3.执行sql
            rs = ps.executeQuery();
            while (rs.next()) {
                Goods goods = new Goods();
                goods.setId(rs.getInt("id"));
                goods.setName(rs.getString("name"));
                goods.setNum(rs.getString("num"));
                goods.setAddress(rs.getString("address"));
                return goods;
            }
        } 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;
    }
    @Override
    public boolean addGoods(Goods goods) {
        String sql = "insert into goods values (?,?,?,?)";
        List<Object> list = new ArrayList<Object>();
        list.add(goods.getId());
        list.add(goods.getName());
        list.add(goods.getNum());
        list.add(goods.getAddress());
        boolean flag = DBUtil.addUpdateDelete(sql, list.toArray());
        if (flag) {
            return true;
        } else {
            return false;
        }
    }
    @Override
    public boolean updateGoods(Goods goods) {
        String sql = "update goods set name=?,num=?,address=? where id=?";
        List<Object> list = new ArrayList<Object>();
        list.add(goods.getName());
        list.add(goods.getNum());
        list.add(goods.getAddress());
        // 注意id在最后面
        list.add(goods.getId());
        boolean flag = DBUtil.addUpdateDelete(sql, list.toArray());
        if (flag) {
            return true;
        } else {
            return false;
        }
    }
    @Override
    public boolean deleteGoods(Integer id) {
        String sql = "delete from goods 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;
        }
    }
}

goods-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>新增商品</title>
    <link rel="stylesheet" type="text/css" href="css/common.css">
</head>
<body>
<%-- 头部 --%>
<jsp:include page="top.jsp"/>
<h1>新增商品</h1>
<hr/>
<div id="before">
    <a href="javascript: window.history.go(-1)">返回上一级</a>
</div>
</br>
<form action="goods-add-do.jsp" method="post" name="addForm">
    <div>
        <tr>
            <label>商品编号：</label>
            <input type="text" name="id" id="id" placeholder="请输入商品编号">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品名称：</label>
            <input type="text" name="name" id="name" placeholder="请输入商品名称">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品库存：</label>
            <input type="text" name="num" id="num" placeholder="请输入商品库存">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品地址：</label>
            <input type="text" name="address" id="address" placeholder="请输入商品地址">
        </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;
        // 商品编号和商品名称不能为空
        if (id == "" || id == null) {
            alert("请输入商品编号");
            addForm.id.focus();
            return false;
        } else if (name == "" || name == null) {
            alert("请输入商品名称");
            addForm.name.focus();
            return false;
        }
        return true;
    }
</script>
<%-- 底部 --%>
<jsp:include page="bottom.jsp"/>
</body>
</html>

goods-add-do.jsp

<%@ page import="com.sjsq.entity.Goods" %>
<%@ page import="com.sjsq.service.GoodsService" %>
<%@ page import="com.sjsq.service.impl.GoodsServiceImpl" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>新增商品</title>
</head>
<body>
<%
    // 设置获取注册时的编码为UTF-8
    request.setCharacterEncoding("UTF-8");
    //获取teacher-add.jsp页面提交的账号和密码,注意传过来的是字符串需要进行转化为对应的类型
    Integer id = Integer.parseInt(request.getParameter("id"));
    String name = request.getParameter("name");
    String num = request.getParameter("num");
    String address = request.getParameter("address");
    // 将信息保存到实体类中
    Goods goods = new Goods();
    goods.setId(id);
    goods.setName(name);
    goods.setNum(num);
    goods.setAddress(address);
    System.out.println("添加的商品信息");
    System.out.println(goods);
    // 将数据写入到数据库
    GoodsService goodsService = new GoodsServiceImpl();
    boolean flag = goodsService.addGoods(goods);
    if(flag){
        response.sendRedirect("main.jsp");
    }else{
        response.sendRedirect("error.jsp");
    }
%>
</body>
</html>

goods-update.jsp

<%@ page import="com.sjsq.entity.Goods" %>
<%@ page import="com.sjsq.service.GoodsService" %>
<%@ page import="com.sjsq.service.impl.GoodsServiceImpl" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改商品</title>
    <link rel="stylesheet" type="text/css" href="css/common.css">
</head>
<body>
<%-- 头部 --%>
<jsp:include page="top.jsp"/>
<h1>修改商品</h1>
<hr/>
<%
    //获取main.jsp页面的id
    Integer id = Integer.parseInt(request.getParameter("id"));
    GoodsService goodsService = new GoodsServiceImpl();
    Goods goods = goodsService.selectGoods(id);
%>
<div>
    <a href="javascript: window.history.go(-1)">返回上一级</a>
</div>
</br>
<form action="goods-update-do.jsp" method="post" id="addForm">
    <div>
        <%-- 这里教职工号不能修改 --%>
        <tr>
            <label>商品编号：</label>
            <input type="text" name="id" id="id" placeholder="请输入商品编号" value="<%=goods.getId()%>" readonly="true">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品名称：</label>
            <input type="text" name="name" id="name" placeholder="请输入商品名称" value="<%=goods.getName()%>" autofocus="autofocus">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品库存：</label>
            <input type="text" name="num" id="num" placeholder="请输入商品库存" value="<%=goods.getNum()%>">
        </tr>
    </div>
    <div>
        <tr>
            <label>商品地址：</label>
            <input type="text" name="address" id="address" placeholder="请输入商品地址" value="<%=goods.getAddress()%>">
        </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;
        // 商品编号和商品名称不能为空
        if (id == "" || id == null) {
            alert("请输入商品编号");
            addForm.id.focus();
            return false;
        } else if (name == "" || name == null) {
            alert("请输入商品名称");
            addForm.name.focus();
            return false;
        }
        return true;
    }
</script>
<%-- 底部 --%>
<jsp:include page="bottom.jsp"/>
</body>
</html>

goods-update-do.jsp

<%@ page import="com.sjsq.entity.Goods" %>
<%@ page import="com.sjsq.service.GoodsService" %>
<%@ page import="com.sjsq.service.impl.GoodsServiceImpl" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改商品</title>
</head>
<body>
<%
    // 设置获取注册时的编码为UTF-8
    request.setCharacterEncoding("UTF-8");
    //获取teacher-update.jsp页面提交的账号和密码,注意传过来的是字符串需要进行转化为对应的类型
    Integer id = Integer.parseInt(request.getParameter("id"));
    String name = request.getParameter("name");
    String num = request.getParameter("num");
    String address = request.getParameter("address");
    // 将信息保存到实体类中
    Goods goods = new Goods();
    goods.setId(id);
    goods.setName(name);
    goods.setNum(num);
    goods.setAddress(address);
    System.out.println("修改的商品信息");
    System.out.println(goods);
    // 将数据写入到数据库
    GoodsService goodsService = new GoodsServiceImpl();
    boolean flag = goodsService.updateGoods(goods);
    if(flag){
        response.sendRedirect("main.jsp");
    }else{
        response.sendRedirect("error.jsp");
    }
%>
</body>
</html>

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实现学生宿舍信息管理系统

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

Java+Servlet+JSP学生宿舍管理系统

Java+Servlet+JSP实现图书管理系统

Java+Servlet+JSP实现停车场管理系统

Java+Servlet+JSP实现房屋租赁管理系统

Java+Servlet+JSP实现学生信息管理系统

Java+Servlet+JSP实现学生选课管理系统

Java+Servlet+JSPl实现学生选课签到系统

Java+Servlet+JSP实现宠物诊所管理系统

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

Java+SSM+JSP实现网上考试系统

Java+SSM+JSP实现宠物商城系统

Java+SSM+JSP实现超市管理系统

Java+SSM+JSP实现学生成绩管理系统

Java+SSM+JSP实现学生信息管理系统

Java+SSM+JSP实现药品信息管理系统

Java+SSM+JSP+Maven实现网上书城系统

Java+SSM+JSP+Maven实现学校教务管理系统

Java+SSH系统系列实现

Java+SSH+JSP实现在线考试系统

Java+SSH+JSP实现医院在线挂号系统

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.html

2.更多JavaSwing系统请关注专栏。

https://blog.csdn.net/helongqiang/category_6229101.html

2.源码下载

sql在sql文件夹下面

Java+JSP+Mysql实现Web商品信息管理系统

3.运行项目

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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IDEA+Java+JSP+Mysql+Tomcat实现Web商品信息管理系统