会话-cookie

package com.hopetesting.cookie;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 java.io.IOException;/** * @author newcityman * @date 2019/9/2 - 21:35 */@WebServlet("/cookieDemo01")public class CookieDemo04 extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//1、创建cookie对象 Cookie c1 = new Cookie("msg", "hellocookie"); //2、设置cookie的存活时间 c1.setMaxAge(30);//持久化到硬盘，30秒后自动删除 c1.setPath("/"); //设置跨项目访问cookie // c1.setMaxAge(-10); //默认把数据存放到浏览器内存中，浏览器关闭后，cookie消失 // c1.setMaxAge(0); //删除cookie //3、发送cookie response.addCookie(c1); }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {this.doPost(request, response); }} package com.hopetesting.cookie;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 java.io.IOException;/** * @author newcityman * @date 2019/9/2 - 21:36 */@WebServlet("/cookieDemo02")public class CookieDemo02 extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Cookie[] cookies = request.getCookies(); if (cookies != null) {for (Cookie cookie : cookies) { String name = cookie.getName(); String value = cookie.getValue(); System.out.println(name + "==" + value); } } }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {this.doPost(request, response); }}

转载于:https://www.cnblogs.com/newcityboy/p/11449490.html