基于javaweb+jsp的校园家教兼职信息管理系统

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

                str = new String(str.getBytes("ISO-8859-1"), "UTF-8");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GB2312"), "UTF-8");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "UTF-8");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("UTF-8"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GB2312"), "ISO-8859-1");
            }
            if (isMessyCode(str)) {
                str = new String(str.getBytes("GBK"), "ISO-8859-1");
            }

        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">性别：</label>
            <div class="col-sm-5">
                <input name="jiaoyuanSex" type="radio" value="男" checked="checked"/>&nbsp;&nbsp;&nbsp;男&nbsp;&nbsp;&nbsp;&nbsp;
                <input name="jiaoyuanSex" type="radio" value="女"/>&nbsp;&nbsp;&nbsp;女&nbsp;&nbsp;&nbsp;&nbsp;
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">学历：</label>
            <div class="col-sm-5">
                <input type="text" class="form-control" id="jiaoyuanXueli" name="jiaoyuanXueli">
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">联系方式：</label>
            <div class="col-sm-5">
                <input type="text" class="form-control" id="jiaoyuanPhone" name="jiaoyuanPhone">
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">教学项目：</label>
            <div class="col-sm-5">

    /**
     * 处理Get请求
     *
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);//Get请求和Post请求的处理是一样的，所以把request、response转交给Post方法就好
    }

    /**
     * 根据参数，查询出条例条件的记录集合，最后将数据返回给调用处或者将数据集合设置到session域里，再跳转到对应的列表页面

        String action = Util.decode(request, "action");
        if ("add".equals(action)) {//增加
            Jiaoyuan vo = new Jiaoyuan();
            //取出页面传进来的各个数据，并设置到Jiaoyuan对象的属性里
            vo.setJiaoyuanName(Util.decode(request, "jiaoyuanName"));
            vo.setJiaoyuanAge(Util.decode(request, "jiaoyuanAge"));
            vo.setJiaoyuanSex(Util.decode(request, "jiaoyuanSex"));
            vo.setJiaoyuanXueli(Util.decode(request, "jiaoyuanXueli"));
            vo.setJiaoyuanPhone(Util.decode(request, "jiaoyuanPhone"));
            vo.setJiaoyuanNeirong(Util.decode(request, "jiaoyuanNeirong"));
            vo.setJiaoyuanPrice(Util.decode(request, "jiaoyuanPrice"));
            vo.setJiaoyuanDate(Util.decode(request, "jiaoyuanDate"));
            vo.setJiaoyuanStatus(Util.decode(request, "jiaoyuanStatus"));
            vo.setJiaoyuanText(Util.decode(request, "jiaoyuanText"));
            JiaoyuanService jiaoyuanService = new JiaoyuanServiceImpl();

            this.redirectList(request, response);
        } else if ("edit".equals(action)) {//修改
            //取出页面传进来的各个数据，并设置到Xueyuan对象的属性里
            Xueyuan vo = new Xueyuan();
            vo.setId(Long.valueOf(Util.decode(request, "id")));
            vo.setXueyuanName(Util.decode(request, "xueyuanName"));
            vo.setXueyuanAge(Util.decode(request, "xueyuanAge"));
            vo.setXueyuanSex(Util.decode(request, "xueyuanSex"));
            vo.setXueyuanPhone(Util.decode(request, "xueyuanPhone"));
            vo.setXueyuanNeirong(Util.decode(request, "xueyuanNeirong"));
            vo.setXueyuanDate(Util.decode(request, "xueyuanDate"));
            vo.setXueyuanPrice(Util.decode(request, "xueyuanPrice"));
            vo.setXueyuanText(Util.decode(request, "xueyuanText"));
            XueyuanService xueyuanService = new XueyuanServiceImpl();
            //调用Service层更新方法（update），更新记录
            xueyuanService.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
            XueyuanService xueyuanService = new XueyuanServiceImpl();
            Xueyuan vo = xueyuanService.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

            </div>
        </div>
            <div class="form-group">
                <label class="col-sm-3 control-label">手机：</label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="userPhone" name="userPhone" value="${vo.userPhone}">
                </div>
            </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">备注：</label>
            <div class="col-sm-5">
                <textarea rows="3" class="form-control" id="userText" name="userText" placeholder="请输入内容......">${vo.userText}</textarea>
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-3 control-label">类型：</label>
            <div class="col-sm-5">
                       <input <c:if test="${loginUser.userType != '管理员'}">disabled="disabled" title="没有权限！！！"</c:if> name="userType" type="radio" value="管理员" ${vo.userType=='管理员'?'checked':''}/>&nbsp;&nbsp;&nbsp;管理员&nbsp;&nbsp;&nbsp;&nbsp;
                       <input name="userType" type="radio" value="普通用户" ${vo.userType=='普通用户'?'checked':''}/>&nbsp;&nbsp;&nbsp;普通用户&nbsp;&nbsp;&nbsp;&nbsp;
            </div>
        </div>
        <div class="form-group">

        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) xueyuanService.list(params).get("list");//根据分页参数startIndex、pageSize查询出来的最终结果list
        pb.setServlet("XueyuanServlet");
        pb.setSearchColumn(searchColumn);
        pb.setKeyword(keyword);
        pb.setList(list);
        request.getSession().setAttribute("pageBean", pb);
        request.getSession().setAttribute("list", pb.getList());

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

import com.demo.util.Util;
import com.demo.service.UserService;
import com.demo.service.impl.UserServiceImpl;
import com.demo.vo.User;

        response.setCharacterEncoding("UTF-8");
        String action = Util.decode(request, "action");
        if ("add".equals(action)) {//增加
            Xueyuan vo = new Xueyuan();
            //取出页面传进来的各个数据，并设置到Xueyuan对象的属性里
            vo.setXueyuanName(Util.decode(request, "xueyuanName"));
            vo.setXueyuanAge(Util.decode(request, "xueyuanAge"));
            vo.setXueyuanSex(Util.decode(request, "xueyuanSex"));
            vo.setXueyuanPhone(Util.decode(request, "xueyuanPhone"));
            vo.setXueyuanNeirong(Util.decode(request, "xueyuanNeirong"));
            vo.setXueyuanDate(Util.decode(request, "xueyuanDate"));

            <label class="col-sm-3 control-label">详细说明：</label>
            <div class="col-sm-5">
                <textarea rows="3" class="form-control" id="xueyuanText" name="xueyuanText" 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-line btn-default btn-sm" value="保存">
                <input type="button" class="btn 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
        if (document.getElementById("xueyuanName").value.trim().length == 0) {
            alert("学员姓名不能为空!");
            return false;
        }
        if (document.getElementById("xueyuanAge").value.trim().length == 0) {

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;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 公告模块的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<br>
 * 而后再调用NoticeService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("/NoticeServlet")
public class NoticeServlet extends HttpServlet {

            request.getRequestDispatcher("login.jsp").forward(request, response);
        } else if ("register".equalsIgnoreCase(action)) {//注册
            String username = Util.decode(request, "username");
            String password = Util.decode(request, "password");
            System.out.println("username=" + username);
            System.out.println("password=" + password);
            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);
            params.put("startIndex", 0);
            params.put("pageSize", Long.MAX_VALUE);

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

    //@Override
    public Jiaoyuan get(Serializable id) {
        Jiaoyuan vo = null;
        try {
            Connection c = Util.getConnection();

     */
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //过滤编码
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        String action = Util.decode(request, "action");
        if ("add".equals(action)) {//增加
            Notice vo = new Notice();
            //取出页面传进来的各个数据，并设置到Notice对象的属性里
            vo.setNoticeName(Util.decode(request, "noticeName"));
            vo.setNoticeText(Util.decode(request, "noticeText"));
            vo.setNoticeType(Util.decode(request, "noticeType"));
            vo.setCreateDate(Util.decode(request, "createDate"));
            NoticeService noticeService = new NoticeServiceImpl();
            //调用Service层增加方法（add），增加记录
            noticeService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的公告记录的主键
            long id = Long.parseLong(Util.decode(request, "id"));
            NoticeService noticeService = new NoticeServiceImpl();

            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);
            //  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

            <div class="col-sm-5">
                <textarea rows="3" class="form-control" id="xueyuanText" name="xueyuanText" 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-line btn-default btn-sm" value="保存">
                <input type="button" class="btn 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() {

    /**
     * 根据参数，查询出条例条件的记录集合，最后将数据返回给调用处或者将数据集合设置到session域里，再跳转到对应的列表页面
     *
     * @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
        NoticeService noticeService = new NoticeServiceImpl();

            }
            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
            //  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));

                    vo.setJiaoyuanPhone(rs.getString("jiaoyuan_phone"));
                    vo.setJiaoyuanNeirong(rs.getString("jiaoyuan_neirong"));
                    vo.setJiaoyuanPrice(rs.getString("jiaoyuan_price"));
                    vo.setJiaoyuanDate(rs.getString("jiaoyuan_date"));
                    vo.setJiaoyuanStatus(rs.getString("jiaoyuan_status"));
                    vo.setJiaoyuanText(rs.getString("jiaoyuan_text"));
                    list.add(vo);
                }
            String sqlCount = "select count(*) from `t_jiaoyuan` where 1=1 " + condition;
            ps = c.prepareStatement(sqlCount);
            rs = ps.executeQuery();
            if (rs.next()) {
                totalCount = rs.getInt(1);
            }
            rs.close();

        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);
        return new Color(red, green, blue);
    }
}
package com.demo.servlet;

import com.demo.util.Util;
import com.demo.service.JiaoyuanService;
import com.demo.service.impl.JiaoyuanServiceImpl;
import com.demo.vo.Jiaoyuan;
import javax.servlet.ServletException;

        
            <div class="form-group">
                <label class="col-sm-3 control-label">用户名：</label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="username" name="username" value="${vo.username}">
                </div>
            </div>
            <div class="form-group">
                <label class="col-sm-3 control-label">密码：</label>
                <div class="col-sm-5">
                    <input type="text" class="form-control" id="password" name="password" value="${vo.password}">
                </div>
            </div>
            <div class="form-group">
                <label class="col-sm-3 control-label">姓名：</label>

            XueyuanService xueyuanService = new XueyuanServiceImpl();
            //调用Service层更新方法（update），更新记录
            xueyuanService.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
            XueyuanService xueyuanService = new XueyuanServiceImpl();
            Xueyuan vo = xueyuanService.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("xueyuan_" + to + ".jsp");
        } else {//默认去列表页面
            this.redirectList(request, response);
        }
    }

    /**
     * 处理Get请求
     *
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */

        try {
            Connection c = Util.getConnection();
            Statement s = c.createStatement();
            String sql = "select * from `t_user` where id = " + id;
            ResultSet rs = s.executeQuery(sql);
            if (rs.next()) {
                vo = new User();
                vo.setId(rs.getLong("id"));
                vo.setUsername(rs.getString("username"));
                vo.setPassword(rs.getString("password"));
                vo.setRealName(rs.getString("real_name"));
                vo.setUserSex(rs.getString("user_sex"));
                vo.setUserPhone(rs.getString("user_phone"));

    /**
     * 处理Get请求
     *
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);//Get请求和Post请求的处理是一样的，所以把request、response转交给Post方法就好
    }

    /**
     * 根据参数，查询出条例条件的记录集合，最后将数据返回给调用处或者将数据集合设置到session域里，再跳转到对应的列表页面
     *
     * @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");

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

        String sql = "update `t_notice` set `notice_name` = ? ,`notice_text` = ? ,`notice_type` = ? ,`create_date` = ?  where `id` = ?";
        try {
            Connection c = Util.getConnection();
            PreparedStatement ps = c.prepareStatement(sql);
            
            ps.setString(1, vo.getNoticeName());
            ps.setString(2, vo.getNoticeText());
            ps.setString(3, vo.getNoticeType());
            ps.setString(4, vo.getCreateDate());
            ps.setLong(5, vo.getId());
            ps.execute();
            ps.close();
            c.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //@Override
    public boolean delete(long id) {
        try {
            Connection c = Util.getConnection();
            Statement s = c.createStatement();
            String sql = "delete from `t_notice` where id = " + id;

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、教员模块、学员模块的增删改查管理

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