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1   /*
2    * $Id: RequestUtils.java 471717 2006-11-06 12:50:18Z husted $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  package org.apache.struts2;
22  
23  import javax.servlet.http.HttpServletRequest;
24  
25  
26  /***
27   * Request handling utility class.
28   */
29  public class RequestUtils {
30  
31      /***
32       * Retrieves the current request servlet path.
33       * Deals with differences between servlet specs (2.2 vs 2.3+)
34       *
35       * @param request the request
36       * @return the servlet path
37       */
38      public static String getServletPath(HttpServletRequest request) {
39          String servletPath = request.getServletPath();
40  
41          if (null != servletPath && !"".equals(servletPath)) {
42              return servletPath;
43          }
44  
45          String requestUri = request.getRequestURI();
46          int startIndex = request.getContextPath().equals("") ? 0 : request.getContextPath().length();
47          int endIndex = request.getPathInfo() == null ? requestUri.length() : requestUri.lastIndexOf(request.getPathInfo());
48  
49          if (startIndex > endIndex) { // this should not happen
50              endIndex = startIndex;
51          }
52  
53          return requestUri.substring(startIndex, endIndex);
54      }
55  
56  }