基于javaweb和mysql的jsp+servlet毕业生就业信息管理系统(JavaWeb JSP MySQL Servlet SSM SpringBoot Layui Ajax)

2501_93031130

284人浏览 · 2025-08-30 21:49:16

2501_93031130 · 2025-08-30 21:49:16 发布

私信源码获取及调试交流

运行环境

Java≥8、MySQL≥5.7、Tomcat≥8

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

技术框架

JavaBean MVC JSP Servlet MySQL CSS JavaScript Layui Ajax

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

eclipse/MyEclipse运行：

idea运行：


/**
 * 班级模块的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ClassService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("/ClassServlet")
public class ClassServlet 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
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        String action = request.getParameter("action");
        if ("add".equals(action)) {//增加
            Class vo = new Class();
            //取出页面传进来的各个数据，并设置到Class对象的属性里
            vo.setClassName(request.getParameter("className"));
            vo.setClassMaster(request.getParameter("classMaster"));
            vo.setClassMasterTel(request.getParameter("classMasterTel"));
            vo.setClassMajor(request.getParameter("classMajor"));
            vo.setClassAllCount(request.getParameter("classAllCount"));
            vo.setClassJobCount(request.getParameter("classJobCount"));
            vo.setClassText(request.getParameter("classText"));
            vo.setCreateBy(((com.demo.vo.User) request.getSession().getAttribute("loginUser")).getId());
            ClassService classService = new ClassServiceImpl();
            //调用Service层增加方法（add），增加记录
            classService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的班级记录的主键
            long id = Long.parseLong(request.getParameter("id"));
            ClassService classService = new ClassServiceImpl();
            //调用Service层删除方法（delete），将对应的记录删除
            classService.delete(id);
            this.redirectList(request, response);
        } else if ("edit".equals(action)) {//修改

            vo.setUserText(request.getParameter("userText"));
            vo.setUserType(request.getParameter("userType"));
            vo.setCreateBy(((com.demo.vo.User) request.getSession().getAttribute("loginUser")).getId());
            UserService userService = new UserServiceImpl();
            //调用Service层增加方法（add），增加记录
            userService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的用户记录的主键
            long id = Long.parseLong(request.getParameter("id"));
            UserService userService = new UserServiceImpl();
            //调用Service层删除方法（delete），将对应的记录删除
            userService.delete(id);
            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User对象的属性里
            User vo = new User();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setUsername(request.getParameter("username"));
            vo.setPassword(request.getParameter("password"));
            vo.setRealName(request.getParameter("realName"));
            vo.setUserSex(request.getParameter("userSex"));
            vo.setUserPhone(request.getParameter("userPhone"));
            vo.setUserText(request.getParameter("userText"));
            vo.setUserType(request.getParameter("userType"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            UserService userService = new UserServiceImpl();
            //调用Service层更新方法（update），更新记录
            userService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            UserService userService = new UserServiceImpl();
            User vo = userService.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("user_" + 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
     */
    @Override

            Company vo = new Company();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setCompanyName(request.getParameter("companyName"));
            vo.setCompanyTitle(request.getParameter("companyTitle"));
            vo.setCompanyAddress(request.getParameter("companyAddress"));
            vo.setCompanyText(request.getParameter("companyText"));
            vo.setCompanyHr(request.getParameter("companyHr"));
            vo.setCompanyTel(request.getParameter("companyTel"));
            vo.setCompanyCount(request.getParameter("companyCount"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            CompanyService companyService = new CompanyServiceImpl();
            //调用Service层更新方法（update），更新记录
            companyService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            CompanyService companyService = new CompanyServiceImpl();
            Company vo = companyService.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("company_" + 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
     */
    @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

        if ("login".equalsIgnoreCase(action)) {//登录
            String username = request.getParameter("username");
            String password = request.getParameter("password");

            String validationCode = request.getParameter("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();
            
            
            List<User> list = (List<User>) userService.list(params).get("list");
            for (User user : list) {
                if (user.getUsername().equals(username) && user.getPassword().equals(password)) {//找到这个管理员了
                    request.getSession().setAttribute("loginUser", user);
					request.getSession().setMaxInactiveInterval(Integer.MAX_VALUE);
                    request.getRequestDispatcher("user_list.jsp").forward(request, response);
                    return;
                }
            }
            request.getSession().setAttribute("alert_msg", "错误：用户名或密码错误！");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        } else if ("register".equalsIgnoreCase(action)) {//注册
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            System.out.println("username=" + username);
            System.out.println("password=" + password);
            UserService userService = new UserServiceImpl();
            Map<String, Object> params = new HashMap();
            
            
            params.put("startIndex", 0);
            params.put("pageSize", Long.MAX_VALUE);
            List<User> list = (List<User>) userService.list(params).get("list");
            for (User user : list) {
                if (user.getUsername().equals(username) /*&& user.getPassword().equals(password)*/) {//说明该用户名已存在，必须换个用户名才能注册

        if ("add".equals(action)) {//增加
            Class vo = new Class();
            //取出页面传进来的各个数据，并设置到Class对象的属性里
            vo.setClassName(request.getParameter("className"));
            vo.setClassMaster(request.getParameter("classMaster"));
            vo.setClassMasterTel(request.getParameter("classMasterTel"));
            vo.setClassMajor(request.getParameter("classMajor"));
            vo.setClassAllCount(request.getParameter("classAllCount"));
            vo.setClassJobCount(request.getParameter("classJobCount"));
            vo.setClassText(request.getParameter("classText"));
            vo.setCreateBy(((com.demo.vo.User) request.getSession().getAttribute("loginUser")).getId());
            ClassService classService = new ClassServiceImpl();
            //调用Service层增加方法（add），增加记录
            classService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的班级记录的主键
            long id = Long.parseLong(request.getParameter("id"));
            ClassService classService = new ClassServiceImpl();
            //调用Service层删除方法（delete），将对应的记录删除
            classService.delete(id);
            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Class对象的属性里
            Class vo = new Class();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setClassName(request.getParameter("className"));
            vo.setClassMaster(request.getParameter("classMaster"));
            vo.setClassMasterTel(request.getParameter("classMasterTel"));
            vo.setClassMajor(request.getParameter("classMajor"));
            vo.setClassAllCount(request.getParameter("classAllCount"));
            vo.setClassJobCount(request.getParameter("classJobCount"));
            vo.setClassText(request.getParameter("classText"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            ClassService classService = new ClassServiceImpl();
            //调用Service层更新方法（update），更新记录
            classService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            ClassService classService = new ClassServiceImpl();
            Class vo = classService.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("class_" + to + ".jsp");
        } else {//默认去列表页面
            this.redirectList(request, response);
        }
    }


/**
 * 招聘模块的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CompanyService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("/CompanyServlet")
public class CompanyServlet 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
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        String action = request.getParameter("action");
        if ("add".equals(action)) {//增加
            Company vo = new Company();
            //取出页面传进来的各个数据，并设置到Company对象的属性里
            vo.setCompanyName(request.getParameter("companyName"));
            vo.setCompanyTitle(request.getParameter("companyTitle"));
            vo.setCompanyAddress(request.getParameter("companyAddress"));
            vo.setCompanyText(request.getParameter("companyText"));
            vo.setCompanyHr(request.getParameter("companyHr"));
            vo.setCompanyTel(request.getParameter("companyTel"));
            vo.setCompanyCount(request.getParameter("companyCount"));
            vo.setCreateBy(((com.demo.vo.User) request.getSession().getAttribute("loginUser")).getId());
            CompanyService companyService = new CompanyServiceImpl();
            //调用Service层增加方法（add），增加记录
            companyService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除

    private void redirectList(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //查询列和关键字
        String searchColumn = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        //User loginUser = (User) request.getSession().getAttribute("loginUser");
        //if (!"管理员".equals(loginUser.getUserType())) {
        //    params.put("createBy", loginUser.getId());
        //}
        ClassService classService = new ClassServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(classService.list(params).get("list")));
    }
}

/**
 * 用户模块的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UserService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("/UserServlet")
public class UserServlet extends HttpServlet {

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

            //调用Service层删除方法（delete），将对应的记录删除
            classService.delete(id);
            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Class对象的属性里
            Class vo = new Class();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setClassName(request.getParameter("className"));
            vo.setClassMaster(request.getParameter("classMaster"));
            vo.setClassMasterTel(request.getParameter("classMasterTel"));
            vo.setClassMajor(request.getParameter("classMajor"));
            vo.setClassAllCount(request.getParameter("classAllCount"));
            vo.setClassJobCount(request.getParameter("classJobCount"));
            vo.setClassText(request.getParameter("classText"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            ClassService classService = new ClassServiceImpl();
            //调用Service层更新方法（update），更新记录
            classService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            ClassService classService = new ClassServiceImpl();
            Class vo = classService.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("class_" + 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
     */
    @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
    }

            response.sendRedirect("job_" + 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
     */
    @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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        //User loginUser = (User) request.getSession().getAttribute("loginUser");
        //if (!"管理员".equals(loginUser.getUserType())) {
        //    params.put("createBy", loginUser.getId());
        //}
        JobService jobService = new JobServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(jobService.list(params).get("list")));
    }
}

            this.redirectList(request, response);
        }
    }

    /**
     * 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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        //User loginUser = (User) request.getSession().getAttribute("loginUser");
        //if (!"管理员".equals(loginUser.getUserType())) {
        //    params.put("createBy", loginUser.getId());
        //}
        JobService jobService = new JobServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(jobService.list(params).get("list")));
    }
}

            User vo = new User();
            //取出页面传进来的各个数据，并设置到User对象的属性里
            vo.setUsername(request.getParameter("username"));
            vo.setPassword(request.getParameter("password"));
            vo.setRealName(request.getParameter("realName"));
            vo.setUserSex(request.getParameter("userSex"));
            vo.setUserPhone(request.getParameter("userPhone"));
            vo.setUserText(request.getParameter("userText"));
            vo.setUserType(request.getParameter("userType"));
            vo.setCreateBy(((com.demo.vo.User) request.getSession().getAttribute("loginUser")).getId());
            UserService userService = new UserServiceImpl();
            //调用Service层增加方法（add），增加记录
            userService.add(vo);
            this.redirectList(request, response);
        } else if ("delete".equals(action)) {//删除
            //取出表要删除的用户记录的主键
            long id = Long.parseLong(request.getParameter("id"));
            UserService userService = new UserServiceImpl();
            //调用Service层删除方法（delete），将对应的记录删除
            userService.delete(id);
            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User对象的属性里
            User vo = new User();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setUsername(request.getParameter("username"));
            vo.setPassword(request.getParameter("password"));
            vo.setRealName(request.getParameter("realName"));
            vo.setUserSex(request.getParameter("userSex"));
            vo.setUserPhone(request.getParameter("userPhone"));
            vo.setUserText(request.getParameter("userText"));
            vo.setUserType(request.getParameter("userType"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            UserService userService = new UserServiceImpl();
            //调用Service层更新方法（update），更新记录
            userService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            UserService userService = new UserServiceImpl();
            User vo = userService.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("user_" + to + ".jsp");
        } else {//默认去列表页面
            this.redirectList(request, response);
        }
    }

    /**
     * 处理Get请求
     *
     * @param request

            vo.setPassword(password);
		vo.setCreateBy(0L);
        vo.setUserType("普通用户");
            userService.add(vo);
            request.getSession().setAttribute("alert_msg", "注册成功！用户名：[" + username + "]");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        } 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
            //  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
            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));

            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            JobService jobService = new JobServiceImpl();
            //调用Service层更新方法（update），更新记录
            jobService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            JobService jobService = new JobServiceImpl();
            Job vo = jobService.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("job_" + 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
     */
    @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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        //User loginUser = (User) request.getSession().getAttribute("loginUser");
        //if (!"管理员".equals(loginUser.getUserType())) {
        //    params.put("createBy", loginUser.getId());
        //}
        JobService jobService = new JobServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(jobService.list(params).get("list")));
    }
}

    /**
     * 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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        User loginUser = (User) request.getSession().getAttribute("loginUser");
        if (!"管理员".equals(loginUser.getUserType())) {
            params.put("id", loginUser.getId());
        }
        UserService userService = new UserServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(userService.list(params).get("list")));
    }
}

/**
 * 就业模块的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JobService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


    /**
     * 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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        //User loginUser = (User) request.getSession().getAttribute("loginUser");
        //if (!"管理员".equals(loginUser.getUserType())) {
        //    params.put("createBy", loginUser.getId());
        //}
        ClassService classService = new ClassServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(classService.list(params).get("list")));
    }
}

            //调用Service层删除方法（delete），将对应的记录删除
            classService.delete(id);
            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Class对象的属性里
            Class vo = new Class();
            vo.setId(Long.valueOf(request.getParameter("id")));
            vo.setClassName(request.getParameter("className"));
            vo.setClassMaster(request.getParameter("classMaster"));
            vo.setClassMasterTel(request.getParameter("classMasterTel"));
            vo.setClassMajor(request.getParameter("classMajor"));
            vo.setClassAllCount(request.getParameter("classAllCount"));
            vo.setClassJobCount(request.getParameter("classJobCount"));
            vo.setClassText(request.getParameter("classText"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            ClassService classService = new ClassServiceImpl();
            //调用Service层更新方法（update），更新记录
            classService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            ClassService classService = new ClassServiceImpl();
            Class vo = classService.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("class_" + 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
     */
    @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
    }


//@WebServlet("/AuthServlet")
public class AuthServlet extends HttpServlet {
    @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 = request.getParameter("action");
        if ("login".equalsIgnoreCase(action)) {//登录
            String username = request.getParameter("username");
            String password = request.getParameter("password");

            String validationCode = request.getParameter("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();
            
            
            List<User> list = (List<User>) userService.list(params).get("list");
            for (User user : list) {
                if (user.getUsername().equals(username) && user.getPassword().equals(password)) {//找到这个管理员了
                    request.getSession().setAttribute("loginUser", user);
					request.getSession().setMaxInactiveInterval(Integer.MAX_VALUE);
                    request.getRequestDispatcher("user_list.jsp").forward(request, response);
                    return;
                }
            }
            request.getSession().setAttribute("alert_msg", "错误：用户名或密码错误！");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        } else if ("register".equalsIgnoreCase(action)) {//注册
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            System.out.println("username=" + username);
            System.out.println("password=" + password);
            UserService userService = new UserServiceImpl();
            Map<String, Object> params = new HashMap();
            
            
            params.put("startIndex", 0);
            params.put("pageSize", Long.MAX_VALUE);

            vo.setUserType(request.getParameter("userType"));
            vo.setCreateBy(Long.valueOf(request.getParameter("createBy")));
            UserService userService = new UserServiceImpl();
            //调用Service层更新方法（update），更新记录
            userService.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 = request.getParameter("id");//取出页面传入的主键，用于查询详情
            UserService userService = new UserServiceImpl();
            User vo = userService.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("user_" + 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
     */
    @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 = request.getParameter("searchColumn");
        String keyword = request.getParameter("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/*keyword != null ? new String(keyword.getBytes("ISO-8859-1"), "UTF-8") : null*/);//查询的关键字
        User loginUser = (User) request.getSession().getAttribute("loginUser");
        if (!"管理员".equals(loginUser.getUserType())) {
            params.put("id", loginUser.getId());
        }
        UserService userService = new UserServiceImpl();
        response.getWriter().println(com.alibaba.fastjson.JSONObject.toJSONString(userService.list(params).get("list")));
    }
}

请添加图片描述

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