判断用户是否登录，用户在没有登录访问页面时，自动跳转到登录页面（二）

package com.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class QueryServletFilter extends HttpServlet
{

public void doPost(HttpServletRequest req,HttpServletResponse resp)
throws ServletException,IOException
{
System.out.println("QureyServletFilter");
}

public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException,IOException
{
System.out.println("doGet");
doPost(req,resp);

}
}