2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.wicket.behavior;
18 import org.apache.wicket.markup.html.WebPage;
19 import org.apache.wicket.protocol.http.WebResponse;
23 * Behavior to disable browser caching. This also means that the page
24 * automatically expires the first time after it is rendered.
28 * Important: To make sure that form data cannot be submitted twice for
29 * the same data using the back button, it is still necessary to explicitly call
30 * <code>getPage().getPageMap().remove(getPage());</code>
31 * in the <code>onSubmit</code> callback of the form.
34 * @author Erik Brakkee
37 public class DisableCachingBehavior extends ExpirePageImmediatelyBehavior {
40 public void setHeaders(WebPage aPage, WebResponse aResponse) {
41 System.out.println("Disabling caching for " + aPage.getClass().getName());
42 aResponse.setHeader("Pragma", "no-cache");
43 aResponse.setHeader("Cache-Control",
44 "no-cache, max-age=0, must-revalidate, no-store");