how to clear browser cache programmatically in jsp?

Question

In my web application there is some problem due to browser cache.

How to clear the browser cache when loading my jsp page?

How can i include clear cache code in jsp page?

Answer 1

You can do this way in your JSP to prevent from caching,not able to clear the cache programatically:

 <% 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  
%>

Answer 2

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

work perfect in jsp and remember to check session

<%

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

%>