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.管理员对宠物信息的增删改查。
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_pet_management Target Server Type : MySQL Target Server Version : 80013 File Encoding : 65001 Date: 01/03/2022 11:05:12 */ 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 pet -- ---------------------------- DROP TABLE IF EXISTS `pet`; CREATE TABLE `pet` ( `id` int(11) NOT NULL, `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, `age` 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 pet -- ---------------------------- INSERT INTO `pet` VALUES (1001, '猫大', '3', '湖北武汉'); INSERT INTO `pet` VALUES (1002, '猫二', '4', '湖南长沙'); INSERT INTO `pet` VALUES (1003, '狗大', '3', '湖南长沙'); INSERT INTO `pet` VALUES (1004, '狗二', '4', '吉林长春'); 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.新增宠物
4.修改宠物
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; } }
PetDaoImpl
package com.sjsq.dao.impl; import com.sjsq.dao.PetDao; import com.sjsq.entity.Pet; 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 PetDaoImpl implements PetDao { @Override public List<Pet> 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<Pet> list = new ArrayList<>(); while (rs.next()) { Pet pet = new Pet(); pet.setId(rs.getInt("id")); pet.setName(rs.getString("name")); pet.setAge(rs.getString("age")); pet.setAddress(rs.getString("address")); list.add(pet); } 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 Pet selectPet(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 pet where id = ?"; ps = con.prepareStatement(sql); ps.setInt(1,id); // 3.执行sql rs = ps.executeQuery(); while (rs.next()){ Pet pet = new Pet(); pet.setId(rs.getInt("id")); pet.setName(rs.getString("name")); pet.setAge(rs.getString("age")); pet.setAddress(rs.getString("address")); return pet; } } 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 addPet(Pet pet) { String sql = "insert into pet values (?,?,?,?)"; List<Object> list = new ArrayList<Object>(); list.add(pet.getId()); list.add(pet.getName()); list.add(pet.getAge()); list.add(pet.getAddress()); boolean flag = DBUtil.addUpdateDelete(sql,list.toArray()); if(flag){ return true; }else { return false; } } @Override public boolean updatePet(Pet pet) { String sql = "update pet set name=?,age=?,address=? where id=?"; List<Object> list = new ArrayList<Object>(); list.add(pet.getName()); list.add(pet.getAge()); list.add(pet.getAddress()); // 注意id在最后面 list.add(pet.getId()); boolean flag = DBUtil.addUpdateDelete(sql,list.toArray()); if(flag){ return true; }else { return false; } } @Override public boolean deletePet(Integer id) { String sql = "delete from pet 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; } } }
pet-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>新增宠物</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>新增宠物</h1> <hr/> <div id="before"> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="pet-add-do.jsp" method="post" name="addForm"> <div> <tr> <label>宠物编号:</label> <input type="text" name="id" id="id" placeholder="请输入宠物编号"> </tr> </div> <div> <tr> <label>宠物名称:</label> <input type="text" name="name" id="name" placeholder="请输入宠物名称"> </tr> </div> <div> <tr> <label>宠物年龄:</label> <input type="text" name="age" id="age" placeholder="请输入宠物年龄"> </tr> </div> <div> <tr> <label>宠物地址:</label> <input type="text" name="address" id="address" placeholder="请输入宠物地址"> </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; // 宠物编号和宠物名称不能为空 if (id == "" || id == null) { alert("请输入宠物编号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入宠物名称"); addForm.name.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
pet-add-do.jsp
<%@ page import="com.sjsq.entity.Pet" %> <%@ page import="com.sjsq.service.PetService" %> <%@ page import="com.sjsq.service.impl.PetServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>新增宠物</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 age = request.getParameter("age"); String address = request.getParameter("address"); // 将信息保存到实体类中 Pet pet = new Pet(); pet.setId(id); pet.setName(name); pet.setAge(age); pet.setAddress(address); System.out.println("添加的宠物信息"); System.out.println(pet); // 将数据写入到数据库 PetService petService = new PetServiceImpl(); boolean flag = petService.addPet(pet); if(flag){ response.sendRedirect("main.jsp"); }else{ response.sendRedirect("error.jsp"); } %> </body> </html>
pet-update.jsp
<%@ page import="com.sjsq.entity.Pet" %> <%@ page import="com.sjsq.service.PetService" %> <%@ page import="com.sjsq.service.impl.PetServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改宠物</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>修改宠物</h1> <hr/> <% //获取main.jsp页面的id Integer id = Integer.parseInt(request.getParameter("id")); PetService petService = new PetServiceImpl(); Pet pet = petService.selectPet(id); %> <div> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="pet-update-do.jsp" method="post" id="addForm"> <div> <%-- 这里教职工号不能修改 --%> <tr> <label>宠物编号:</label> <input type="text" name="id" id="id" placeholder="请输入宠物编号" value="<%=pet.getId()%>" readonly="true"> </tr> </div> <div> <tr> <label>宠物名称:</label> <input type="text" name="name" id="name" placeholder="请输入宠物名称" value="<%=pet.getName()%>" autofocus="autofocus"> </tr> </div> <div> <tr> <label>宠物年龄:</label> <input type="text" name="age" id="age" placeholder="请输入宠物年龄" value="<%=pet.getAge()%>"> </tr> </div> <div> <tr> <label>宠物地址:</label> <input type="text" name="address" id="address" placeholder="请输入宠物地址" value="<%=pet.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; // 宠物编号和宠物名称不能为空 if (id == "" || id == null) { alert("请输入宠物编号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入宠物名称"); addForm.name.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
pet-update-do.jsp
<%@ page import="com.sjsq.entity.Pet" %> <%@ page import="com.sjsq.service.PetService" %> <%@ page import="com.sjsq.service.impl.PetServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改宠物</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 age = request.getParameter("age"); String address = request.getParameter("address"); // 将信息保存到实体类中 Pet pet = new Pet(); pet.setId(id); pet.setName(name); pet.setAge(age); pet.setAddress(address); System.out.println("修改的宠物信息"); System.out.println(pet); // 将数据写入到数据库 PetService petService = new PetServiceImpl(); boolean flag = petService.updatePet(pet); if(flag){ response.sendRedirect("main.jsp"); }else{ response.sendRedirect("error.jsp"); } %> </body> </html>
四、其他
1.更多系统
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1.更多JavaWeb系统请关注专栏。
https://blog.csdn.net/helongqiang/category_10020130.html
https://blog.csdn.net/helongqiang/category_10020130.html
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https://blog.csdn.net/helongqiang/category_6229101.html
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宠物信息管理系统
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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