1, 在jsp或者servlet中加入
<%
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);
%>
2, 在页面中使用HTML标记，如下面：
<HEAD>
<META http-equiv=Pragma content=no-cache>
<META http-equiv=Cache-Control content=no-cache>
<META http-equiv=Expires content=0>
