<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="Wed, 26 Feb 199708:21:57 GMT">
或
复制代码 代码如下:
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
2.在服务器的动态网页中禁止缓存，要加入类似如下脚本
复制代码 代码如下:
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);
（三）设置有限时间的缓存
复制代码 代码如下:
int minutes = 10;
Date d = new Date();
String modDate = d.toGMTString();
String expDate = null;
expDate = (new Date(d.getTime() + minutes * 60000)).toGMTString();
response.setHeader("Last-Modified", modDate);
response.setHeader("Expires", expDate);
response.setHeader("Cache-Control", "public"); // HTTP/1.1
response.setHeader("Pragma", "Pragma"); // HTTP/1.0
补充：关于.jsp cache的几条建议:
1.jsp cache最好做在过滤器上,把需要缓冲的页面集中在同一个目录下,每次更改只须更改web.xml就可以完成缓冲设置,这样比较方便.
2.Gzip压缩可以将页面压缩得很小,平均压缩比为1/3,jsp cache的HashMap缓冲压缩后的页面,肯定比没压缩前更节约内存消耗,并且效率更高.
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