ajax缓存解决

ajax缓存解决

方法1：

1. xmlhttp.setRequestHeader("Cache-Control","no-cache");
2. url += "&random="+Math.random();
3. url += "&timestamp="+new Date().getTime();

方法二：

//处理页面缓存
  response.setHeader("Pragma","No-cache");
  response.setHeader("Cache-Control","no-cache");
  response.setDateHeader("Expires", 0);