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1   /*
2    * $Id: RequestUtils.java 651946 2008-04-27 13:41:38Z apetrelli $
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  
22  package org.apache.struts2;
23  
24  import javax.servlet.http.HttpServletRequest;
25  
26  
27  /***
28   * Request handling utility class.
29   */
30  public class RequestUtils {
31  
32      /***
33       * Retrieves the current request servlet path.
34       * Deals with differences between servlet specs (2.2 vs 2.3+)
35       *
36       * @param request the request
37       * @return the servlet path
38       */
39      public static String getServletPath(HttpServletRequest request) {
40          String servletPath = request.getServletPath();
41          
42          String requestUri = request.getRequestURI();
43          // Detecting other characters that the servlet container cut off (like anything after ';')
44          if (requestUri != null && servletPath != null && !requestUri.endsWith(servletPath)) {
45              int pos = requestUri.indexOf(servletPath);
46              if (pos > -1) {
47                  servletPath = requestUri.substring(requestUri.indexOf(servletPath));
48              }
49          }
50          
51          if (null != servletPath && !"".equals(servletPath)) {
52              return servletPath;
53          }
54          
55          int startIndex = request.getContextPath().equals("") ? 0 : request.getContextPath().length();
56          int endIndex = request.getPathInfo() == null ? requestUri.length() : requestUri.lastIndexOf(request.getPathInfo());
57  
58          if (startIndex > endIndex) { // this should not happen
59              endIndex = startIndex;
60          }
61  
62          return requestUri.substring(startIndex, endIndex);
63      }
64  
65  }