jsp实现简单用户7天内免登录（jsp用户登录界面代码）原创

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package com.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet(“/LoginServlet”)
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID=1L;

public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//获取用户登录名
String username=request.getParameter(“username”);

//获取7天内是否免登录
String day7=request.getParameter(“chkCookie”);
int cookie_day=1;
if(null !=day7 && day7.equals(“”)){

cookie_day=Integer.valueOf(day7);
}

//创建cookie
Cookie cookie=new Cookie(“cook_name”,username);

//设置Cookie有限期
//cookie.setMaxAge(6);//有效期6秒
cookie.setMaxAge(3600 * 24 * cookie_day);//设置7天免登录

//写入cookie到浏览器
response.addCookie(cookie);
response.sendRedirect(“cookieUser.jsp”);

}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}

}