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How to clear browser cache programmatically in jsp?

There are some problems in my web application due to browser cache.

How to clear browser cache when loading my jsp page?

How can I include clear cache code in jsp page?

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4 answers

You can do this in your JSP before prevent from cachingbeing unable to clear the cache programmatically:

 <% response.setHeader("Cache-Control","no-cache"); //HTTP 1.1 
 response.setHeader("Pragma","no-cache"); //HTTP 1.0 
 response.setDateHeader ("Expires", 0); //prevents caching at the proxy server  
%>
+16
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 <%
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", 0);
 %>

works fine in jsp and don't forget to check the session

<%

User u = (User) request.getSession().getAttribute("user");
if (u != null ) {
//show page
}else{
// redirect to login page
}

%>
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, HTML:

<meta http-equiv="Pragma" content="no-cache"> 
 <meta http-equiv="Cache-Control"      content="no-cache"> 
<meta http-equiv="Expires" content="Sat, 01 Dec 2012 00:00:00 GMT">

Cache-Control HTTP 1.1, HTTP 1.0.

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

.

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