Java中Cookie的操作

一般浏览器只保存200-300个Cookie 每个站点最多20个 每个限制大小4KB

Cookie cks [] = request.getCookies();
		if(cks==null||cks.length==0){
			//首次运行设置Cookie
			Cookie cookie = new Cookie("username","zhougege");
			Cookie cookie2 = new Cookie("password","123456");
			//设置Cookie过期之前的时间，以秒计
			cookie.setMaxAge(7*24*60*60);
			cookie2.setMaxAge(7*24*60*60);
			//设置域名
			//cookie.setDomain(".baidu.com");
			response.addCookie(cookie);
			response.addCookie(cookie2);
		}else{
			//以后运行读取Cookie
			for(int i=0;i<cks.length;i++){
				System.out.println(cks[i].getName()+"-->"+cks[i].getValue());
			}
		}