How to control cache in JSP page?

Question

I created a Servlet filter with the following code in doFilter:

HttpServletResponse httpResponse = (HttpServletResponse)response;

httpResponse.setHeader(\"C         


        

Answer 1

I found this in the oracle docs where they mention that you should never use

httpResponse.setDateHeader("Expires", 0);

instead of it you should use

setDateHeader("Last-Modified", (new Date()).getTime() );

http://docs.oracle.com/cd/E13158_01/alui/wci/docs103/devguide/tsk_pagelets_settingcaching_httpexpires.html