简易学生管理系统

package com.student.action; import org.apache.struts.action.*; import org.apache.struts.actions.*; import javax.servlet.http.*; import com.student.entity.Student; import com.student.service.StudentService; import java.util.Collection; import java.sql.Date; public class StudentAction extends DispatchAction { private StudentService service = new StudentService(); public ActionForward find(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionForward forward = mapping.findForward("list"); try { Collection students = service.find(); request.setAttribute("students", students); }catch(Exception e) { e.printStackTrace(); forward = mapping.findForward("error"); } return forward; } public ActionForward tomodify(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionForward forward = mapping.findForward("modify"); try { String id = request.getParameter("id"); Student student = service.findById(Integer.parseInt(id)); request.setAttribute("student", student); }catch(Exception e) { e.printStackTrace(); forward = mapping.findForward("error"); } return forward; } public ActionForward add(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionForward forward = mapping.findForward("tolist"); try { String name = request.getParameter("name"); String birthday = request.getParameter("birthday"); Student student = new Student(); student.setName(name); student.setBirthday(Date.valueOf(birthday)); service.add(student); }catch(Exception e) { e.printStackTrace(); forward = mapping.findForward("error"); } return forward; } public ActionForward modify(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionForward forward = mapping.findForward("tolist"); try { String name = request.getParameter("name"); String birthday = request.getParameter("birthday"); int id = Integer.parseInt(request.getParameter("id")); Student student = new Student(); student.setId(id); student.setName(name); student.setBirthday(Date.valueOf(birthday)); service.modify(student); }catch(Exception e) { e.printStackTrace(); forward = mapping.findForward("error"); } return forward; } public ActionForward remove(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ActionForward forward = mapping.findForward("tolist"); try { String id = request.getParameter("id"); service.remove(Integer.parseInt(id)); }catch(Exception e) { e.printStackTrace(); forward = mapping.findForward("error"); } return forward; } public ActionForward toadd(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { return mapping.findForward("add"); } }