Hello, everyone!
As to implementing Cache Control in JSP (or servlet),
at least the following two paragraphs of sample codes
can always be found:
1, Using JAVA methods, like (in JSP or in servlet)
<%
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);
%>
2, Using HTML tags, like
<HEAD>
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="0">
</HEAD>
Will anyone please explain as clearly as possible
the difference between them above ? Especially,
do browsers (such as IE and NN) differ in any way when handling
the same resulted HTML file?
Or any reference material will be appreciated.
Best regards!
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