KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > struts > chain > servlet > RequestNoCache


1 /*
2  * Copyright 2003,2004 The Apache Software Foundation.
3  *
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
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
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.
15  */
16
17 package org.apache.struts.chain.servlet;
18
19
20 import javax.servlet.http.HttpServletResponse JavaDoc;
21 import org.apache.commons.chain.Context;
22 import org.apache.commons.chain.web.servlet.ServletWebContext;
23 import org.apache.struts.chain.AbstractRequestNoCache;
24
25
26 /**
27  * <p>Check to see if the controller is configured to prevent caching,
28  * and if so, set the no cache HTTP response headers.</p>
29  *
30  * @version $Rev: 54933 $ $Date: 2004-10-16 18:04:52 +0100 (Sat, 16 Oct 2004) $
31  */
32
33 public class RequestNoCache extends AbstractRequestNoCache {
34
35
36     // ------------------------------------------------------- Protected Methods
37
38
39     protected void requestNoCache(Context context) {
40
41         ServletWebContext swcontext = (ServletWebContext) context;
42         HttpServletResponse JavaDoc response = swcontext.getResponse();
43         
44         response.setHeader("Pragma", "No-cache");
45         response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
46         response.setDateHeader("Expires", 1);
47
48     }
49
50
51 }
52
Popular Tags