package com.feijian.servlet;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
public class CookieServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
PrintWriter writer = resp.getWriter();
//从客户端获取Cookie
Cookie[] cookies = req.getCookies();
//判断Cookie是否存在
if (cookies!=null){
writer.print("<h1>你上一次访问的时间是:</h1>");
for (int i = 0; i < cookies.length; i++) {
Cookie cookie=cookies[i];
if (cookie.getName().equals("lastLoginTime")){
//获取Cookie的值
String date = cookie.getValue();
long lastLoginTime = Long.parseLong(date);
Date date1 = new Date(lastLoginTime);
writer.print(date1.toLocaleString());
}
}
} else {
System.out.println("这是你第一次访问");
}
//服务器给客户端响应一个cookie
Cookie lastLoginTime = new Cookie("lastLoginTime", System.currentTimeMillis() + "");
//设置有效时间
lastLoginTime.setMaxAge(24*60*60);
resp.addCookie(lastLoginTime);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
标签:06,JavaWeb,04,resp,Cookie,import,lastLoginTime,servlet,javax
From: https://www.cnblogs.com/RUI2022/p/17294004.html