网络考试系统的设计与实现

package cn.itbaizhan.tyut.exam.sys.servlets; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.util.List; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.commons.beanutils.BeanUtils; import cn.itbaizhan.tyut.exam.common.PageControl; import cn.itbaizhan.tyut.exam.common.Pager; import cn.itbaizhan.tyut.exam.common.Tools; import cn.itbaizhan.tyut.exam.model.Paper; import cn.itbaizhan.tyut.exam.model.Studentpaper; import cn.itbaizhan.tyut.exam.model.Subject; import cn.itbaizhan.tyut.exam.model.SysFunction; import cn.itbaizhan.tyut.exam.model.Sysrole; import cn.itbaizhan.tyut.exam.model.Sysuser; import cn.itbaizhan.tyut.exam.sys.services.impl.PaperService; import cn.itbaizhan.tyut.exam.sys.services.impl.StudentpaperService; import cn.itbaizhan.tyut.exam.sys.services.impl.UserService; import cn.itbaizhan.tyut.exam.sys.services.interfaces.IPaperService; import cn.itbaizhan.tyut.exam.sys.services.interfaces.IStudentpaperService; import cn.itbaizhan.tyut.exam.sys.services.interfaces.IUserService; public class UserServlet extends HttpServlet { IUserService service = new UserService(); IPaperService paperService = new PaperService(); IStudentpaperService spServece = new StudentpaperService(); @Override protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String cmd= request.getParameter("cmd"); if(cmd.equals("paperlist")){ index(request,response); }else if(cmd.equals("login")){ login(request,response); }else if(cmd.equals("init")){ initpage(request,response); }else if(cmd.equals("logout")){ logout(request,response); }else if(cmd.equals("list")){ list(request,response); }else if(cmd.equals("add")){ add(request,response); }else if(cmd.equals("toedit")){ toedit(request,response); }else if(cmd.equals("edit")){ edit(request,response); }else if(cmd.equals("toeditpwd")){ toeditpwd(request,response); }else if(cmd.equals("editpwd")){ editpwd(request,response); }else if(cmd.equals("paper")){ paper(request,response); }else if(cmd.equals("stulogin")){ stulogin(request,response); }else if(cmd.equals("answer")){ answer(request,response); } } /** * 跳转首页 * @param request * @param response */ private void index(HttpServletRequest request, HttpServletResponse response) { Paper paper = new Paper(); //String pname = request.getParameter("pname"); //paper.setPname(pname); List<Paper> papers = paperService.list(paper); request.setAttribute("papers", papers); try { request.getRequestDispatcher("/user/index.jsp").forward(request, response); } catch (ServletException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } /** * 修改用户功能 * @param request * @param response */ private void edit(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub Sysuser user = new Sysuser(); try { BeanUtils.populate(user, request.getParameterMap()); Integer rtn = service.edit(user); if(rtn>0){ response.sendRedirect(Tools.Basepath(request, response)+"sys/user?cmd=list"); }else{ request.setAttribute("msg", "保存用户失败！"); request.getRequestDispatcher("/sys/user/edit.jsp").forward(request, response); } } catch (Exception e) { e.printStackTrace(); } } /** * 用户初始化修改页面 * @param request * @param response * @throws IOException * @throws ServletException * @throws IOException * @throws ServletException */ private void toedit(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub Sysuser user = new Sysuser(); user.setUserid(Integer.parseInt(request.getParameter("id"))); user = service.detail(user); if(user!=null){ request.setAttribute("item",user); request.getRequestDispatcher("/sys/user/edit.jsp").forward(request, response); }else{ request.setAttribute("msg", "需要修改的用户不存在。"); request.getRequestDispatcher("/error.jsp").forward(request, response); } } /** * 修改用户密码功能 * @param request * @param response */ private void editpwd(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub Sysuser user = new Sysuser(); try { BeanUtils.populate(user, request.getParameterMap()); Integer rtn = service.editpwd(user); if(rtn>0){ response.sendRedirect(Tools.Basepath(request, response)+"sys/user?cmd=list"); }else{ request.setAttribute("msg", "保存用户失败！"); request.getRequestDispatcher("/sys/user/editpwd.jsp").forward(request, response); } } catch (Exception e) { e.printStackTrace(); } } /** * 用户初始化密码修改页面 * @param request * @param response * @throws IOException * @throws ServletException * @throws IOException * @throws ServletException */ private void toeditpwd(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub Sysuser user = new Sysuser(); user.setUserid(Integer.parseInt(request.getParameter("id"))); user = service.detail(user); if(user!=null){ request.setAttribute("user",user); request.getRequestDispatcher("/sys/user/editpwd.jsp").forward(request, response); }else{ request.setAttribute("msg", "需要修改的用户不存在。"); request.getRequestDispatcher("/error.jsp").forward(request, response); } } /** * 新增用户 * @param request * @param response */ private void add(HttpServletRequest request, HttpServletResponse response) { // TODO Auto-generated method stub Sysuser user = new Sysuser(); try { BeanUtils.populate(user, request.getParameterMap()); Integer rtn = service.add(user); if(rtn>0){ response.sendRedirect(Tools.Basepath(request, response)+"sys/user?cmd=list"); }else{ request.setAttribute("msg", "添加用户失败或请不要再重复添加"); request.getRequestDispatcher("/sys/user/add.jsp").forward(request, response); } } catch (Exception e) { e.printStackTrace(); } } /** * 获取用户列表 * @param request * @param response * @throws IOException * @throws ServletException * @throws IOException * @throws ServletException */ private void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub String sname = request.getParameter("sname"); Sysuser user = new Sysuser(); if(sname!=null && !sname.equals("")){ user.setUsername(sname); } PageControl pc = new PageControl(); Integer currindex = 1; if(request.getParameter("index")!=null){ currindex = Integer.parseInt(request.getParameter("index")); } pc.setCurrentindex(currindex); //pc.setPagesize(5); Pager<Sysuser> pager = service.list(user, pc); request.setAttribute("pager", pager); request.getRequestDispatcher("/sys/user/list.jsp").forward(request, response); } /** * 注销 * @param request * @param response * @throws IOException */ private void logout(HttpServletRequest request, HttpServletResponse response) throws IOException { HttpSession session = request.getSession(); session.removeAttribu