基于javaweb+jsp的学生成绩管理系统

基于javaweb+jsp的学生成绩管理系统

JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap

基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可

开发工具：eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

    private static boolean isChinese(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        return (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS);
    }

import java.sql.Statement;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 用户模块的DAO层（数据层）的具体实现类，对UserDAO接口中定义的增删改查等抽象方法作出具体的功能实现
 */
public class UserDAOImpl implements UserDAO {

    //@Override
    public void add(User vo) {
        String sql = "insert into `t_user` (`username`,`password`,`real_name`,`user_sex`,`user_phone`,`user_text`,`user_type`) values(?,?,?,?,?,?,?)";
        try {
            Connection c = Util.getConnection();
            PreparedStatement ps = c.prepareStatement(sql);
            
            ps.setString(1, vo.getUsername());
            ps.setString(2, vo.getPassword());
            ps.setString(3, vo.getRealName());
            ps.setString(4, vo.getUserSex());

div>
body>
<script type="text/javascript">
    //提交之前进行检查，如果return false，则不允许提交
    function check() {
        //根据ID获取值
        if (document.getElementById("username").value.trim().length == 0) {
            alert("用户名不能为空!");
            return false;
        }
        if (document.getElementById("password").value.trim().length == 0) {

     *
     * @param request
     * @param response
     */
    private void redirectList(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //查询列和关键字
        String searchColumn = Util.decode(request, "searchColumn");
        String keyword = Util.decode(request, "keyword");
        Map<String, Object> params = new HashMap();//用来保存控制层传进来的参数(查询条件)
        params.put("searchColumn", searchColumn);//要查询的列
        params.put("keyword", keyword);//查询的关键字
        UserService userService = new UserServiceImpl();
        Map<String, Object> map = userService.list(params);
        request.getSession().setAttribute("list", map.get("list"));

        Integer totalRecord = (Integer) map.get("totalCount");//根据查询条件取出对应的总记录数，用于分页
        String pageNum = Util.decode(request, "pageNum");//封装分页参数
        com.demo.util.PageBean<Object> pb = new com.demo.util.PageBean(Integer.valueOf(pageNum != null ? pageNum : "1"), totalRecord);

            g.setFont(new Font("Times New Roman", Font.ITALIC, height));
            g.setColor(getRandomColor(120, 180));// 随机设置字体颜色
            //  用于保存最后随机生成的验证码
            StringBuilder validationCode = new StringBuilder();
            //  验证码的随机字体
            String[] fontNames = {"Times New Roman", "Book antiqua", "Arial"};
            for (int i = 0; i < 4; i++) {
                //  随机设置当前验证码的字符的字体
                g.setFont(new Font(fontNames[random.nextInt(3)], Font.ITALIC, height));
                //  随机获得当前验证码的字符
                char codeChar = codeChars.charAt(random.nextInt(charsLength));
                validationCode.append(codeChar);
                //  随机设置当前验证码字符的颜色
                g.setColor(getRandomColor(10, 100));
                //  在图形上输出验证码字符，x和y都是随机生成的
                g.drawString(String.valueOf(codeChar), 16 * i + random.nextInt(7), height - random.nextInt(6));
            }
            HttpSession session = request.getSession();

     * @param args
     * @throws Exception
     */
    public static void main(String[] args) {
        try {
            Connection conn = Util.getConnection();
            System.out.println("数据库连接成功！！！");
            conn.close();
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("数据库连接失败！！！");
        }
    }

            vo.setScoreName(Util.decode(request, "scoreName"));
            vo.setScoreSex(Util.decode(request, "scoreSex"));
            vo.setScoreClass(Util.decode(request, "scoreClass"));
            vo.setScoreSubject(Util.decode(request, "scoreSubject"));
            vo.setScoreTeacher(Util.decode(request, "scoreTeacher"));
            vo.setScoreScore(Util.decode(request, "scoreScore"));
            vo.setScoreText(Util.decode(request, "scoreText"));
            ScoreService scoreService = new ScoreServiceImpl();
            //调用Service层更新方法（update），更新记录
            scoreService.update(vo);
            this.redirectList(request, response);
        } else if ("get".equalsIgnoreCase(action) || "editPre".equalsIgnoreCase(action)) {//根据主键ID，查询详情信息并跳转到详情页面或编辑页面
            Serializable id = Util.decode(request, "id");//取出页面传入的主键，用于查询详情
            ScoreService scoreService = new ScoreServiceImpl();
            Score vo = scoreService.get(id);
            request.getSession().setAttribute("vo", vo);
            String to = "get".equalsIgnoreCase(action) ? "info" : "edit";//判断是去详情显示页面还是编辑页面
            response.sendRedirect("score_" + to + ".jsp");
        } else {//默认去列表页面
            this.redirectList(request, response);
        }
    }

    /**

import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 成绩模块的Servlet控制层，负责接收页面传过来的请求参数，根据action参数的值来确定页面要执行的具体操作

 * 而后再调用ScoreService业务层的方法来处理具体的业务，最后将处理完成的结果返回或跳转至相应页面
 */
//@WebServlet("/ScoreServlet")
public class ScoreServlet extends HttpServlet {

    /**
     * 处理Post请求
     *
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //过滤编码

            int charsLength = codeChars.length();
            //  下面三条记录是关闭客户端浏览器的缓冲区
            //  这三条语句都可以关闭浏览器的缓冲区，但是由于浏览器的版本不同，对这三条语句的支持也不同
            //  因此，为了保险起见，建议同时使用这三条语句来关闭浏览器的缓冲区
            response.setHeader("ragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
            //  设置图形验证码的长和宽（图形的大小）
            int width = 90, height = 20;
            BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
            Graphics g = image.getGraphics();//  获得用于输出文字的Graphics对象
            Random random = new Random();
            g.setColor(getRandomColor(180, 250));// 随机设置要填充的颜色
            g.fillRect(0, 0, width, height);//  填充图形背景
            //  设置初始字体
            g.setFont(new Font("Times New Roman", Font.ITALIC, height));
            g.setColor(getRandomColor(120, 180));// 随机设置字体颜色
            //  用于保存最后随机生成的验证码

        }
        try {
            Connection c = Util.getConnection();
            PreparedStatement ps;
            ResultSet rs;
            String limit = (params.get("startIndex") != null && params.get("pageSize") != null) ? " limit " + params.get("startIndex") + "," + params.get("pageSize") : "";
                sqlList = "select * from `t_score` where 1=1 " + condition + " order by id asc " + limit + ";";
                ps = c.prepareStatement(sqlList);
                rs = ps.executeQuery();
                while (rs.next()) {
                    Score vo = new Score();
                    vo.setId(rs.getLong("id"));
                    vo.setScoreName(rs.getString("score_name"));
                    vo.setScoreSex(rs.getString("score_sex"));
                    vo.setScoreClass(rs.getString("score_class"));
                    vo.setScoreSubject(rs.getString("score_subject"));
                    vo.setScoreTeacher(rs.getString("score_teacher"));
                    vo.setScoreScore(rs.getString("score_score"));
                    vo.setScoreText(rs.getString("score_text"));
                    list.add(vo);
                }
            String sqlCount = "select count(*) from `t_score` where 1=1 " + condition;
            ps = c.prepareStatement(sqlCount);
            rs = ps.executeQuery();

            ps.close();
            c.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        Map<String, Object> result = new HashMap();
        result.put("list", list);
        result.put("totalCount", totalCount);
        return result;
    }
}
package com.demo.dao.impl;

import com.demo.util.Util;
import com.demo.dao.UserDAO;
import com.demo.vo.User;

    public void setServlet(String servlet) {
        this.servlet = servlet;
    }

    public String getSearchColumn() {
        return searchColumn;
    }

    public void setSearchColumn(String searchColumn) {
        this.searchColumn = searchColumn;
    }

    public String getKeyword() {
        return keyword;
    }

                    div>
                    <br><br>
                    <div style="padding:30px;">
                        <input type="submit" class="button button-block bg-main text-big input-big" value="登录">
                    div>
                div>
            form>
        div>
    div>
div>
body>
<script type="text/javascript">
    //提交之前进行检查，如果return false，则不允许提交
    function check() {
        //根据ID获取值
        var username = document.getElementById("username").value;
        var password = document.getElementById("password").value;

                    vo.setScoreClass(rs.getString("score_class"));
                    vo.setScoreSubject(rs.getString("score_subject"));
                    vo.setScoreTeacher(rs.getString("score_teacher"));
                    vo.setScoreScore(rs.getString("score_score"));
                    vo.setScoreText(rs.getString("score_text"));
                    list.add(vo);
                }
            String sqlCount = "select count(*) from `t_score` where 1=1 " + condition;
            ps = c.prepareStatement(sqlCount);
            rs = ps.executeQuery();
            if (rs.next()) {
                totalCount = rs.getInt(1);
            }

            if (start < 0) {
                //比如当前页是第1页，或者第2页，那么就不如和这个规则，
                this.start = 1;
                this.end = 5;
            }
            if (end > this.totalPage) {
                //比如当前页是倒数第2页或者最后一页，也同样不符合上面这个规则
                this.end = totalPage;
                this.start = end - 5;
            }
        }
    }

    //get、set方法。
    public int getPageNum() {
        return pageNum;
    }

    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }

            <label class="col-sm-3 control-label">备注：label>
            <div class="col-sm-5">
                <textarea rows="3" class="form-control" id="scoreText" name="scoreText" placeholder="请输入内容......">textarea>
            div>
        div>
        <div class="form-group">
            <label class="col-sm-3 control-label">label>
            <div class="col-sm-5">
                <input type="submit" class="btn btn-pill btn-line btn-warning btn-sm" value="保存">
                <input type="button" class="btn btn-pill btn-line btn-default btn-sm" value="返回" onclick="javascript:history.back(-1);">
            div>
        div>
    form>
div>
body>
<script type="text/javascript">
    //提交之前进行检查，如果return false，则不允许提交
    function check() {
        //根据ID获取值

    <title>登录title>
    <link rel="stylesheet" href="js/myCss.css">
    <script src="js/jquery.min.js">script>
    <script src="js/myJs.js">script>
    <script type="text/javascript">
        let alert_msg = '${alert_msg}';
        if (alert_msg != null && alert_msg.trim() != '') {
            window.alert(alert_msg);
        }
    script>
head>
<body>
<div class="bg">div>
<div class="container">
    <div class="line bouncein">
        <div class="xs6 xm4 xs3-move xm4-move">
            <div style="height:150px;">div>
            <div class="media media-y margin-big-bottom">
            div>

    public boolean delete(long id) {
        try {
            Connection c = Util.getConnection();
            Statement s = c.createStatement();
            String sql = "delete from `t_user` where id = " + id;
            s.execute(sql);
            s.close();
            c.close();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;

        request.getSession().setAttribute("pageBean", pb);
        request.getSession().setAttribute("list", pb.getList());

        response.sendRedirect("user_list.jsp");
    }
}
package com.demo.servlet;

import com.demo.util.Util;
import com.demo.service.NoticeService;
import com.demo.service.impl.NoticeServiceImpl;
import com.demo.vo.Notice;

            div>
            <div class="form-group">
                <label class="col-sm-3 control-label">教师：label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="scoreTeacher" name="scoreTeacher" value="${vo.scoreTeacher}">
                div>
            div>
            <div class="form-group">
                <label class="col-sm-3 control-label">分数：label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="scoreScore" name="scoreScore" value="${vo.scoreScore}">
                div>
            div>
        <div class="form-group">
            <label class="col-sm-3 control-label">备注：label>
            <div class="col-sm-5">
                <textarea rows="3" class="form-control" id="scoreText" name="scoreText" placeholder="请输入内容......">${vo.scoreText}textarea>

        } else if ("validationCode".equalsIgnoreCase(action)) {
            String codeChars = "0123456789";// 图形验证码的字符集合，系统将随机从这个字符串中选择一些字符作为验证码
            //  获得验证码集合的长度
            int charsLength = codeChars.length();
            //  下面三条记录是关闭客户端浏览器的缓冲区
            //  这三条语句都可以关闭浏览器的缓冲区，但是由于浏览器的版本不同，对这三条语句的支持也不同
            //  因此，为了保险起见，建议同时使用这三条语句来关闭浏览器的缓冲区
            response.setHeader("ragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);

        response.setCharacterEncoding("UTF-8");
        String action = Util.decode(request, "action");
        if ("login".equalsIgnoreCase(action)) {//登录
            String username = Util.decode(request, "username");
            String password = Util.decode(request, "password");

            String validationCode = Util.decode(request, "validationCode");
            if (validationCode != null && !validationCode.equals(request.getSession().getAttribute("validationCode"))) {//验证码不通过
                request.getSession().setAttribute("alert_msg", "错误：验证码不正确！");
                request.getRequestDispatcher("login.jsp").forward(request, response);
                return;
            }

            UserService userService = new UserServiceImpl();
            Map<String, Object> params = new HashMap();
            params.put("searchColumn", "username");//使用`username`字段进行模糊查询
            params.put("keyword", username);
            List<User> list = (List<User>) userService.list(params).get("list");

    private Color getRandomColor(int minColor, int maxColor) {
        Random random = new Random();
        // 保存minColor最大不会超过255
        if (minColor > 255)
            minColor = 255;
        //  保存minColor最大不会超过255
        if (maxColor > 255)
            maxColor = 255;
        //  获得红色的随机颜色值
        int red = minColor + random.nextInt(maxColor - minColor);
        //  获得绿色的随机颜色值
        int green = minColor + random.nextInt(maxColor - minColor);
        //  获得蓝色的随机颜色值
        int blue = minColor + random.nextInt(maxColor - minColor);

    <br/>
    <form class="form-horizontal" role="form" action="ScoreServlet?action=edit" method="post" onsubmit="return check()">
        <input type="hidden" class="form-control" id="id" name="id" value="${vo.id}"/>
        
            <div class="form-group">
                <label class="col-sm-3 control-label">姓名：label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="scoreName" name="scoreName" value="${vo.scoreName}">
                div>
            div>
        <div class="form-group">
            <label class="col-sm-3 control-label">性别：label>
            <div class="col-sm-5">
                          男    
                          女    
            div>
        div>
            <div class="form-group">
                <label class="col-sm-3 control-label">班级：label>

        } else if ("logout".equalsIgnoreCase(action)) {//登出
            HttpSession session = request.getSession();
            User user = (User) session.getAttribute("loginUser");
            if (user != null) {
                session.removeAttribute("loginUser");
            }
            response.sendRedirect("login.jsp");
        } else if ("validationCode".equalsIgnoreCase(action)) {
            String codeChars = "0123456789";// 图形验证码的字符集合，系统将随机从这个字符串中选择一些字符作为验证码
            //  获得验证码集合的长度
            int charsLength = codeChars.length();
            //  下面三条记录是关闭客户端浏览器的缓冲区

        Map<String, Object> params = new HashMap();//用来保存控制层传进来的参数(查询条件)
        params.put("searchColumn", searchColumn);//要查询的列
        params.put("keyword", keyword);//查询的关键字
        ScoreService scoreService = new ScoreServiceImpl();
        Map<String, Object> map = scoreService.list(params);
        request.getSession().setAttribute("list", map.get("list"));

        Integer totalRecord = (Integer) map.get("totalCount");//根据查询条件取出对应的总记录数，用于分页
        String pageNum = Util.decode(request, "pageNum");//封装分页参数
        com.demo.util.PageBean<Object> pb = new com.demo.util.PageBean(Integer.valueOf(pageNum != null ? pageNum : "1"), totalRecord);
        params.put("startIndex", pb.getStartIndex());
        params.put("pageSize", pb.getPageSize());
        List list = (List) scoreService.list(params).get("list");//根据分页参数startIndex、pageSize查询出来的最终结果list
        pb.setServlet("ScoreServlet");
        pb.setSearchColumn(searchColumn);
        pb.setKeyword(keyword);
        pb.setList(list);
        request.getSession().setAttribute("pageBean", pb);
        request.getSession().setAttribute("list", pb.getList());

            div>
        div>
    form>
div>
body>
<script type="text/javascript">
    //提交之前进行检查，如果return false，则不允许提交
    function check() {
        //根据ID获取值
        if (document.getElementById("username").value.trim().length == 0) {
            alert("用户名不能为空!");
            return false;

            return false;
        }
        if (document.getElementById("password").value.trim().length == 0) {
            alert("密码不能为空!");
            return false;
        }
        if (document.getElementById("realName").value.trim().length == 0) {
            alert("姓名不能为空!");
            return false;
        }
        if (document.getElementById("userPhone").value.trim().length == 0) {
            alert("手机不能为空!");
            return false;
        }
        return true;
    }
script>
html>
<%@ page contentType="text/html; charset=utf-8" pageEncoding="utf-8" %>
<html>
<head>
    <title>登录title>
    <link rel="stylesheet" href="js/myCss.css">
    <script src="js/jquery.min.js">script>

---

运行环境

Java≥6、Tomcat≥7.0、MySQL≥5.5

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

技术框架

JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap

基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

功能说明

登录、注册、退出、用户模块、公告模块、成绩模块的增删改查管理

↖[获取源码方式]见左侧