login.java

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/*
 * Login.java
 *
 * Created on 2006年5月29日, 下午11:42
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.web.struts.action;

import javax.servlet.http.*;
import org.apache.struts.action.*;
import enova.service.*;
import enova.pojo.*;
import enova.util.Const;

/**
 *
 * @author vlinux
 */
public class Login extends org.apache.struts.actions.DispatchAction {
    
    private String username;
    private String password;
    
    private void loadForm(javax.servlet.http.HttpServletRequest request){
        this.username = request.getParameter("username");
        this.password = request.getParameter("password");
    }
    
    private String verify(HttpServletRequest request, String type){
        loadForm(request);
        try{
            if(type.equals(Const.LOGIN_STUDENT)){
                StudentService ss = (StudentService)ServiceFactory.makeService("StudentService");
                Student student = ss.loginVerify(username,password);
                request.getSession().setAttribute(Const.LOGIN_STUDENT,student);
                return Const.LOGIN_STUDENT;
            }else if(type.equals(Const.LOGIN_TEACHER)){
                TeacherService ts = (TeacherService)ServiceFactory.makeService("TeacherService");
                Teacher teacher = ts.loginVerify(username,password);
                request.getSession().setAttribute(Const.LOGIN_TEACHER,teacher);
                return Const.LOGIN_TEACHER;
            }else{
                RootService rs = (RootService)ServiceFactory.makeService("RootService");
                Root root = rs.loginVerify(username,password);
                request.getSession().setAttribute(Const.LOGIN_ROOT,root);
                return Const.LOGIN_ROOT;
            }
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return Const.STORE_EXCEPTION;
        }catch(PasswordErrorException pee){
            request.setAttribute(Const.MESSAGES,"拒绝登录");
            return Const.ACCESS_DENY;
        }
    }
    
    public ActionForward student(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        return mapping.findForward(verify(request,Const.LOGIN_STUDENT));
    }
    
    public ActionForward teacher(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        return mapping.findForward(verify(request,Const.LOGIN_TEACHER));
    }
    
    public ActionForward root(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        return mapping.findForward(verify(request,Const.LOGIN_ROOT));
    }
}