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.管理员对学生成绩的增删改查。
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_score_management Target Server Type : MySQL Target Server Version : 80013 File Encoding : 65001 Date: 02/03/2022 17:32:29 */ 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 score -- ---------------------------- DROP TABLE IF EXISTS `score`; CREATE TABLE `score` ( `id` int(11) NOT NULL, `name` 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, `score` 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 score -- ---------------------------- INSERT INTO `score` VALUES (1001, '张三', '数学', '99'); INSERT INTO `score` VALUES (1001, '张三', '英语', '80'); INSERT INTO `score` VALUES (1002, '李四', '数学', '80'); INSERT INTO `score` VALUES (1002, '李四', '英语', '90'); 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.新增成绩
4.修改成绩
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; } }
ScoreDaoImpl
package com.sjsq.dao.impl; import com.sjsq.dao.ScoreDao; import com.sjsq.entity.Score; 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: 2022-03-02 * @description: */ public class ScoreDaoImpl implements ScoreDao { @Override public List<Score> 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<Score> list = new ArrayList<>(); while (rs.next()) { Score score = new Score(); score.setId(rs.getInt("id")); score.setName(rs.getString("name")); score.setSubject(rs.getString("subject")); score.setScore(rs.getString("score")); list.add(score); } 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 Score selectScore(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 score where id = ?"; ps = con.prepareStatement(sql); ps.setInt(1, id); // 3.执行sql rs = ps.executeQuery(); while (rs.next()) { Score score = new Score(); score.setId(rs.getInt("id")); score.setName(rs.getString("name")); score.setSubject(rs.getString("subject")); score.setScore(rs.getString("score")); return score; } } 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 addScore(Score score) { String sql = "insert into score values (?,?,?,?)"; List<Object> list = new ArrayList<Object>(); list.add(score.getId()); list.add(score.getName()); list.add(score.getSubject()); list.add(score.getScore()); boolean flag = DBUtil.addUpdateDelete(sql, list.toArray()); if (flag) { return true; } else { return false; } } @Override public boolean updateScore(Score score) { String sql = "update score set name=?,subject=?,score=? where id=?"; List<Object> list = new ArrayList<Object>(); list.add(score.getName()); list.add(score.getSubject()); list.add(score.getScore()); // 注意id在最后面 list.add(score.getId()); boolean flag = DBUtil.addUpdateDelete(sql, list.toArray()); if (flag) { return true; } else { return false; } } @Override public boolean deleteScore(Integer id) { String sql = "delete from score 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; } } }
score-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>新增成绩</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>新增成绩</h1> <hr/> <div id="before"> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="score-add-do.jsp" method="post" name="addForm"> <div> <tr> <label>学号:</label> <input type="text" name="id" id="id" placeholder="请输入学号"> </tr> </div> <div> <tr> <label>姓名:</label> <input type="text" name="name" id="name" placeholder="请输入姓名"> </tr> </div> <div> <tr> <label>科目:</label> <input type="text" name="subject" id="subject" placeholder="请输入科目"> </tr> </div> <div> <tr> <label>分数:</label> <input type="text" name="score" id="score" placeholder="请输入分数"> </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; // 成绩编号和成绩名称不能为空 if (id == "" || id == null) { alert("请输入成绩编号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入成绩名称"); addForm.name.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
score-add-do.jsp
<%@ page import="com.sjsq.entity.Score" %> <%@ page import="com.sjsq.service.ScoreService" %> <%@ page import="com.sjsq.service.impl.ScoreServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>新增成绩</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 subject = request.getParameter("subject"); String score = request.getParameter("score"); // 将信息保存到实体类中 Score score1 = new Score(); score1.setId(id); score1.setName(name); score1.setSubject(subject); score1.setScore(score); System.out.println("添加的成绩信息"); System.out.println(score1); // 将数据写入到数据库 ScoreService scoreService = new ScoreServiceImpl(); boolean flag = scoreService.addScore(score1); if(flag){ response.sendRedirect("main.jsp"); }else{ response.sendRedirect("error.jsp"); } %> </body> </html>
score-update.jsp
<%@ page import="com.sjsq.entity.Score" %> <%@ page import="com.sjsq.service.ScoreService" %> <%@ page import="com.sjsq.service.impl.ScoreServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改成绩</title> <link rel="stylesheet" type="text/css" href="css/common.css"> </head> <body> <%-- 头部 --%> <jsp:include page="top.jsp"/> <h1>修改成绩</h1> <hr/> <% //获取main.jsp页面的id Integer id = Integer.parseInt(request.getParameter("id")); ScoreService ScoreService = new ScoreServiceImpl(); Score score = ScoreService.selectScore(id); %> <div> <a href="javascript: window.history.go(-1)">返回上一级</a> </div> </br> <form action="score-update-do.jsp" method="post" id="addForm"> <div> <%-- 学号 --%> <tr> <label>学号:</label> <input type="text" name="id" id="id" placeholder="请输入学号" value="<%=score.getId()%>" readonly="true"> </tr> </div> <div> <tr> <label>姓名:</label> <input type="text" name="name" id="name" placeholder="请输入姓名" value="<%=score.getName()%>" autofocus="autofocus"> </tr> </div> <div> <tr> <label>科目:</label> <input type="text" name="subject" id="subject" placeholder="请输入科目" value="<%=score.getSubject()%>"> </tr> </div> <div> <tr> <label>成绩:</label> <input type="text" name="score" id="score" placeholder="请输入成绩" value="<%=score.getScore()%>"> </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; // 成绩编号和成绩名称不能为空 if (id == "" || id == null) { alert("请输入成绩编号"); addForm.id.focus(); return false; } else if (name == "" || name == null) { alert("请输入成绩名称"); addForm.name.focus(); return false; } return true; } </script> <%-- 底部 --%> <jsp:include page="bottom.jsp"/> </body> </html>
score-update-do.jsp
<%@ page import="com.sjsq.entity.Score" %> <%@ page import="com.sjsq.service.ScoreService" %> <%@ page import="com.sjsq.service.impl.ScoreServiceImpl" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>修改成绩</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 subject = request.getParameter("subject"); String score = request.getParameter("score"); // 将信息保存到实体类中 // 将信息保存到实体类中 Score score1 = new Score(); score1.setId(id); score1.setName(name); score1.setSubject(subject); score1.setScore(score); System.out.println("修改的成绩信息"); System.out.println(score1); // 将数据写入到数据库 ScoreService scoreService = new ScoreServiceImpl(); boolean flag = scoreService.updateScore(score1); 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
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Java+JSP实现商品信息管理系统
Java+JSP实现宠物信息管理系统
Java+JSP实现学校教材管理系统
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
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
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学生成绩管理系统
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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