连续复制
一键复制
一键打包

解决思路：设置页面为不缓存，访问上一次页面就需要重新去服务器获取。

1. Html 对 元数据声明

<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache, must-revalidate">
<meta http-equiv="expires" content="0"/>

2. Java

if (request.getProtocol().compareTo("HTTP/1.0") == 0){
    response.setHeader("Pragma","no-cache");  
}else if (request.getProtocol().compareTo("HTTP/1.1") == 0){
    response.setHeader("Cache-Control","no-cache");  
}

3. Php

header("Cache-Control: no-store, no-cache, must-revalidate");  
header("Cache-Control: post-check=0, pre-check=0", false);  
header("Pragma: no-cache");

4. Asp

Response.Buffer = True   
Response.ExpiresAbsolute = Now() - 1   
Response.Expires = 0   
Response.CacheControl = "no-cache"   
Response.AddHeader "Pragma", "No-Cache"

5. Jsp

<% 
   response.setHeader("Pragma","no-cache"); 
   response.setHeader("Cache-Control","no-cache"); 
   response.setDateHeader("Expires", 0); 
   response.setHeader("Cache-Control", "no-store"); 
%>

实践发现，如果只是按照上面的做，当使用浏览器上默认的返回时并不能让浏览器刷新，还需要使用 js 控制；

6.返回页面中js

if(window.name!="hasLoad"){
    location.reload();
    window.name = "hasLoad";
}else{
    window.name="";
}

由于 window.name 在浏览器刷新后会仍然保存,所以可以用 window.name 来判断页面是否已经刷新过。