litesoft
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// This Source Code is in the Public Domain per: http://unlicense.org package org.litesoft.GWT.server; import javax.servlet.http.*; public class ServletUtils { public static void noCache( HttpServletResponse pResponse ) { // HTTP 1.0: pResponse.addHeader( "Pragma", "no-cache" ); // Only cache directive for this level // HTTP 1.1: // Indicate page expired back at the epoc and should be // treated as stale (Hopefully caches conform). pResponse.addDateHeader( "Expires", 0 ); // The following are for Cache Management: // Browser Caching: // Indicates caching allowed, but should check if current. pResponse.addHeader( "Cache-Control", "no-cache" ); // Indicates maximum staleness of 0 seconds. pResponse.addHeader( "Cache-Control", "max-stale=0" ); // Browser & Intermediate Caching (anywhere from web server thru to the browser): // Indicates content should not be cached by a shared cache (e.g. a proxy server). pResponse.addHeader( "Cache-Control", "private" ); // Indicates that NO part of the response or the request should be cached. pResponse.addHeader( "Cache-Control", "no-store" ); } } |