cookie
Posted 跳动de手指
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了cookie相关的知识，希望对你有一定的参考价值。
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP ‘a.jsp‘ starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <%-- cookie演示: cookie路径：不是打开每个浏览器页面，都会发送所有浏览器缓存的cookie，而是要看访问URL是否包含cookie保存路径；cookie保存路径是tomcat服务器保存的，默认为/day_11_2/Cookie; --%> <font color="red">保存Cookie</font> <% Cookie cookie = new Cookie("name","value"); //设置cookie存活时间 >0 存活时间以秒计算 <0 表示存活时间为浏览器开启时间，一旦浏览器关闭cookie就灭亡 ；=0 cookie立即死亡 cookie.setMaxAge(60*60); //保存cookie response.addCookie(cookie); %> <%-- <% //演示多个项目共享cookie，首先创建cookie对象设置cookie域，匹配2级域名例如：www.baidu.com zhidao.baidu.com 设置cookie路径为“/” Cookie cookie1 = new Cookie("name","value"); cookie1.setDomain(".baidu.com"); cookie1.setPath("/"); %> --%> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP ‘b.jsp‘ starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <font color="red">获取Cookie</font><hr/> <% //获取cookie注意返回的是数组 Cookie[]cookies = request.getCookies(); //判断cookie数组是否为null，如果不为null就遍历； if(cookies!=null){ for(Cookie cookie : cookies){ //获取Cookie路径 out.print(cookie.getName()+":"+cookie.getValue()+":"+cookie.getPath()+"<br/>"); } } %> </body> </html>
以上是关于cookie的主要内容，如果未能解决你的问题，请参考以下文章