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Java > Open Source Codes > com > caucho > servlets > ErrorStatusServlet


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.servlets;
30
31 import javax.servlet.GenericServlet JavaDoc;
32 import javax.servlet.ServletException JavaDoc;
33 import javax.servlet.ServletRequest JavaDoc;
34 import javax.servlet.ServletResponse JavaDoc;
35 import javax.servlet.http.HttpServletResponse JavaDoc;
36 import java.io.IOException JavaDoc;
37
38 /**
39  * Use ServletResponse.sendError() to send an error to the client.
40  *
41  * <pre>
42  * &lt;servlet&gt;
43  * &lt;servlet-name&gt;forbidden&lt;/servlet-name&gt;
44  * &lt;servlet-class&gt;com.caucho.servlets.ErrorStatusServlet&lt;/servlet-class&gt;
45  * &lt;init&gt;
46  * &lt;status-code&gt;403&lt;/status-code&gt;
47  * &lt;message&gt;You cannot look at that.&lt;/message&gt;
48  * &lt;/init&gt;
49  * &lt;/servlet&gt;
50  *
51  * &lt;servlet-mapping url-pattern="*.properties" servlet-name="forbidden"/&gt;
52  * &lt;servlet-mapping url-pattern="/config/*" servlet-name="forbidden"/&gt;
53  * </pre>
54  */
55 public class ErrorStatusServlet extends GenericServlet JavaDoc {
56   private int _statusCode = 404;
57   private String JavaDoc _message;
58
59   /**
60    * The status code to send, default 404 (Not Found).
61    */
62   public void setStatusCode(int code)
63   {
64     _statusCode = code;
65   }
66
67   /**
68    * The message to send, default is to send no message.
69    */
70   public void setMessage(String JavaDoc message)
71   {
72     _message = message;
73   }
74
75   public void service(ServletRequest JavaDoc request, ServletResponse JavaDoc response)
76     throws ServletException JavaDoc, IOException JavaDoc
77   {
78     HttpServletResponse JavaDoc res = (HttpServletResponse JavaDoc) response;
79
80     if (_message != null)
81       res.sendError(_statusCode, _message);
82     else
83       res.sendError(_statusCode);
84   }
85 }
86
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