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1   /*
2    * $Id$
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  package org.apache.struts.chain.commands.servlet;
22  
23  import org.apache.struts.chain.commands.AbstractRequestNoCache;
24  import org.apache.struts.chain.contexts.ActionContext;
25  import org.apache.struts.chain.contexts.ServletActionContext;
26  
27  import jakarta.servlet.http.HttpServletResponse;
28  
29  /**
30   * <p>Check to see if the controller is configured to prevent caching, and if
31   * so, set the no cache HTTP response headers.</p>
32   *
33   * @version $Rev$ $Date: 2005-05-07 12:11:38 -0400 (Sat, 07 May 2005)
34   *          $
35   */
36  public class RequestNoCache extends AbstractRequestNoCache {
37      // ------------------------------------------------------- Protected Methods
38      protected void requestNoCache(ActionContext context) {
39          ServletActionContext sacontext = (ServletActionContext) context;
40          HttpServletResponse response = sacontext.getResponse();
41  
42          response.setHeader("Pragma", "No-cache");
43          response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
44          response.setDateHeader("Expires", 1);
45      }
46  }