SessionFilter


1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one or more
4    * contributor license agreements.  See the NOTICE file distributed with
5    * this work for additional information regarding copyright ownership.
6    * The ASF licenses this file to You under the Apache License, Version 2.0
7    * (the "License"); you may not use this file except in compliance with
8    * the License.  You may obtain a copy of the License at
9    *
10   * http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.activemq.web;
20  
21  import java.io.IOException  ;
22  
23  import javax.servlet.Filter  ;
24  import javax.servlet.FilterChain  ;
25  import javax.servlet.FilterConfig  ;
26  import javax.servlet.ServletException  ;
27  import javax.servlet.ServletRequest  ;
28  import javax.servlet.ServletResponse  ;
29  import javax.servlet.http.HttpServletRequest  ;
30  import javax.servlet.http.HttpSession  ;
31  
32  
33  /* ------------------------------------------------------------ */
34  /** SessionFilter.
35   * Simple filter to ensure that all clients have a session.
36   * Prevents problems with AJAX requests. 
37   */
38  public class SessionFilter implements Filter  {
39  
40      public void init(FilterConfig   filterConfig) throws ServletException   {
41      }
42  
43      public void doFilter(ServletRequest   request, ServletResponse   response, FilterChain   chain) throws IOException  , ServletException   {
44          HttpSession   session=((HttpServletRequest  )request).getSession(true);
45          // if (session.isNew())
46          //    System.err.println("NEW SESSION "+session.getId()+" for "+((HttpServletRequest)request).getRequestURI());
47          chain.doFilter(request,response);
48      }
49  
50      public void destroy() {
51      }
52  
53  }
54
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