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Java > Open Source Codes > net > killingar > forum > tags > ExpiresNowTag


1 /* Copyright 2000-2005 Anders Hovmöller
2  *
3  * The person or persons who have associated their work with
4  * this document (the "Dedicator") hereby dedicate the entire
5  * copyright in the work of authorship identified below (the
6  * "Work") to the public domain.
7  *
8  * Dedicator makes this dedication for the benefit of the
9  * public at large and to the detriment of Dedicator's heirs
10  * and successors. Dedicator intends this dedication to be an
11  * overt act of relinquishment in perpetuity of all present
12  * and future rights under copyright law, whether vested or
13  * contingent, in the Work. Dedicator understands that such
14  * relinquishment of all rights includes the relinquishment of
15  * all rights to enforce (by lawsuit or otherwise) those
16  * copyrights in the Work.
17  *
18  * Dedicator recognizes that, once placed in the public
19  * domain, the Work may be freely reproduced, distributed,
20  * transmitted, used, modified, built upon, or otherwise
21  * exploited by anyone for any purpose, commercial or non-
22  * commercial, and in any way, including by methods that have
23  * not yet been invented or conceived.
24  */
25
26 package net.killingar.forum.tags;
27
28 import javax.servlet.jsp.JspException JavaDoc;
29 import javax.servlet.jsp.tagext.TagSupport JavaDoc;
30 import java.text.SimpleDateFormat JavaDoc;
31 import java.util.Calendar JavaDoc;
32 import java.util.TimeZone JavaDoc;
33
34 public class ExpiresNowTag extends TagSupport JavaDoc
35 {
36   public int doStartTag() throws JspException JavaDoc
37   {
38         Calendar JavaDoc rightNow = Calendar.getInstance();
39         rightNow.setTimeZone(TimeZone.getTimeZone("GMT"));
40         SimpleDateFormat JavaDoc formatter = new SimpleDateFormat JavaDoc ("EEEE, dd-MM-yy HH:mm:ss zzz");
41         ((javax.servlet.http.HttpServletResponse JavaDoc)pageContext.getResponse()).setHeader("Expires", formatter.format(rightNow.getTime()).toString());
42
43     return SKIP_BODY;
44   }
45
46   public int doEndTag()
47   {
48     return EVAL_PAGE;
49   }
50 }
51
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