ForwardToServletFilter


1   /* ***** BEGIN LICENSE BLOCK *****
2    * Version: MPL 1.1
3    * The contents of this file are subject to the Mozilla Public License Version
4    * 1.1 (the "License"); you may not use this file except in compliance with
5    * the License. You may obtain a copy of the License at
6    * http://www.mozilla.org/MPL/
7    * 
8    * Software distributed under the License is distributed on an "AS IS" basis,
9    * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
10   * for the specific language governing rights and limitations under the
11   * License.
12   * 
13   * The Original Code is Riot.
14   * 
15   * The Initial Developer of the Original Code is
16   * Neteye GmbH.
17   * Portions created by the Initial Developer are Copyright (C) 2007
18   * the Initial Developer. All Rights Reserved.
19   * 
20   * Contributor(s):
21   *   Felix Gnass [fgnass at neteye dot de]
22   * 
23   * ***** END LICENSE BLOCK ***** */
24  package org.riotfamily.website.filter;
25  
26  import java.io.IOException  ;
27  
28  import javax.servlet.FilterChain  ;
29  import javax.servlet.RequestDispatcher  ;
30  import javax.servlet.ServletException  ;
31  import javax.servlet.ServletRequest  ;
32  import javax.servlet.ServletResponse  ;
33  
34  import org.springframework.web.filter.GenericFilterBean;
35  
36  /**
37   * Filter that forwards all request to a named dispatcher.
38   * Example: 
39   * <pre> 
40   * &lt;filter>
41   *   &lt;filter-name>root-path-filter&lt;/filter-name>
42   *   &lt;filter-class>org.riotfamily.website.filter.ForwardToServletFilter&lt;/filter-class>
43   *   &lt;init-param>
44   *     &lt;param-name>servletName&lt;/param-name>
45   *     &lt;param-value>website&lt;/param-value>
46   *  &lt;/init-param>
47   * &lt;/filter>
48   * 
49   * &lt;filter-mapping>
50   *   &lt;filter-name>root-path-filter&lt;/filter-name>
51   *   &lt;url-pattern>/&lt;/url-pattern>
52   * &lt;/filter-mapping>
53   * </pre>
54   * <p>
55   * This will forward all request to / to the website servlet.
56   * </p>
57   * @author Felix Gnass [fgnass at neteye dot de]
58   * @since 6.5
59   */
60  public class ForwardToServletFilter extends GenericFilterBean {
61  
62      private String   servletName;
63      
64      public void setServletName(String   servletName) {
65          this.servletName = servletName;
66      }
67      
68      public void doFilter(ServletRequest   request, 
69              ServletResponse   response, FilterChain   filterChain) 
70              throws IOException  , ServletException   {
71  
72          RequestDispatcher   rd = getServletContext().getNamedDispatcher(servletName);
73          rd.forward(request, response);
74      }
75      
76  }
77
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