loginaction.java

jsp例程

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package struts;

import java.util.List;



import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

import org.apache.struts.action.ActionMessages;

import dao.AdminDAO;
import dao.StudentDAO;
import dao.TeacherDAO;

/** 
 * MyEclipse Struts
 * Creation date: 04-09-2007
 * 
 * XDoclet definition:
 * @struts.action path="/login" name="loginForm" input="/login.jsp" scope="request" validate="true"
 * @struts.action-forward name="teacherLoginsuccess" path="/teacher.jsp"
 * @struts.action-forward name="adminLogsuccess" path="/admin.jsp"
 * @struts.action-forward name="studentLoginsuccess" path="/student.jsp"
 */
public class LoginAction extends Action {
	private StudentDAO stuDao;
	private TeacherDAO teaDao;
	private AdminDAO admDao;
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		LoginForm loginForm = (LoginForm) form;// TODO Auto-generated method stub
		String sort=loginForm.getSort();
		String username=loginForm.getUsername();
		
		String password=loginForm.getPassword();
		int loginSort=Integer.parseInt(sort);
		HttpSession session=request.getSession();
		String id=(String) session.getAttribute("id");
		if(id==null)
		{	
		  session.setAttribute("id", username);
		}
		else{
			session.removeAttribute("id");
			session.setAttribute("id",username);
		}
	try{
		switch(loginSort)   
		{
			case 1:
				List list1=stuDao.isUserValid(username, password);
				if(list1.size()>0)
				  return mapping.findForward("studentLoginsuccess");
				else break;                   
			case 2:
				List list2=teaDao.isUserValid(username, password);
				if(list2.size()>0)
					return mapping.findForward("teacherLoginsuccess");
				else break;
			case 3:
				List list3=admDao.isUserValid(username, password);
				if(list3.size()>0)
					return mapping.findForward("adminLoginsuccess");
				else break;
		     default:
		    	 break;
		    	
		}
	  }catch(Exception e){
		ActionMessages errors=new ActionMessages();
		errors.add("login error",new ActionMessage("login.error"));
		saveErrors(request,errors);
		
	  }
	  return mapping.getInputForward();
	
		
	}

	public StudentDAO getStuDao() {
		return stuDao;
	}

	public void setStuDao(StudentDAO stuDao) {
		this.stuDao = stuDao;
	}

	public TeacherDAO getTeaDao() {
		return teaDao;
	}

	public void setTeaDao(TeacherDAO teaDao) {
		this.teaDao = teaDao;
	}

	public AdminDAO getAdmDao() {
		return admDao;
	}

	public void setAdmDao(AdminDAO admDao) {
		this.admDao = admDao;
	}
}