无法禁用jsp缓存

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

但是,它不起作用.每次按下后退按钮,浏览器都会显示缓存页面而不刷新.

jsp中代码的位置是否重要？如何禁用缓存？

<%        
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
    response.setDateHeader("Expires", -1);
%>

编辑：看到这个问题How to control web page caching, across all browsers?