jsp在线考试系统比较简单易懂

package com.px.struts.action; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.actions.DispatchAction; import com.lx.entity.Question; import com.lx.entity.Users; import com.lx.impl.QuestionDAO; import com.lx.impl.UsersDAO; public class RedirectAction extends DispatchAction { public ActionForward doApply(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { return mapping.findForward("apply");// 转发到申请页面 } public ActionForward doIndex(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { return mapping.findForward("index");// 转发到登陆页面 } @SuppressWarnings("unchecked") public ActionForward doUpdatePassword(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String id = request.getParameter("id"); UsersDAO dao = new UsersDAO();// 转发到修改用户密码页面 List list = dao.getById(Integer.valueOf(id)); Users users = (Users) list.get(0); request.setAttribute("users", users); return mapping.findForward("changepassword"); } public ActionForward doExit(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { HttpSession session = request.getSession(); session.removeAttribute("user");// 退出程序 session.invalidate(); return mapping.findForward("index"); } public ActionForward doSubject(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String examname = request.getParameter("examname"); if (examname != null || !"".equals(examname.trim())) { request.setAttribute("examname", examname); } return mapping.findForward("subject");// 转发到学科页面 } @SuppressWarnings("unchecked") public ActionForward doManagestudent(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { UsersDAO dao = new UsersDAO(); List list = dao.getByIsmanager(1); request.setAttribute("list", list); return mapping.findForward("managestudent");// 转发到学生信息维护页面 } public ActionForward doAdminmain(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { return mapping.findForward("adminmain");// 转发到管理员功能页面 } public ActionForward doDeletestudent(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String id = request.getParameter("id"); int uid = Integer.parseInt(id); Users users = new Users(); users.setId(uid); UsersDAO dao = new UsersDAO();// 删除学生 boolean check = dao.delete(users); if (!check) { request.setAttribute("info", "删除失败!"); } return doManagestudent(mapping, form, request, response); } @SuppressWarnings("unchecked") public ActionForward doFindSubject(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String subject = request.getParameter("subject"); String examname = request.getParameter("examname"); QuestionDAO dao = new QuestionDAO(); List list = dao.getBySubject(subject); request.setAttribute("subject", subject); request.setAttribute("question", list); if (examname.equals("admin")) { return mapping.findForward("subjectmanage"); } else { return mapping.findForward("studentexam"); } } public ActionForward doAddquestion(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String subject = request.getParameter("subject"); request.setAttribute("subject", subject); return mapping.findForward("addquestion");// 转发到添加试题页面 } @SuppressWarnings("unchecked") public ActionForward doDeletequestion(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { String id = request.getParameter("id"); String subject = request.getParameter("subject"); int uid = Integer.parseInt(id); Question question = new Question(); question.setId(uid); QuestionDAO dao = new QuestionDAO(); boolean check = dao.delete(question); if (!check) { request.setAttribute("info", "删除失败!"); } List list = dao.getBySubject(subject); request.setAttribute("subject", subject); request.setAttribute("question", list); return mapping.findForward("subjectmanage"); } public ActionForward doSubjectmanage(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { return mapping.findForward("subjectmanage");// 转发到试题管理页面 } }