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1   /*
2    * $Id: DispatcherServlet.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.portlet.dispatcher;
23  
24  import java.io.IOException;
25  
26  import javax.servlet.ServletException;
27  import javax.servlet.http.HttpServlet;
28  import javax.servlet.http.HttpServletRequest;
29  import javax.servlet.http.HttpServletResponse;
30  
31  import org.apache.struts2.dispatcher.StrutsRequestWrapper;
32  import org.apache.struts2.portlet.PortletActionConstants;
33  
34  import com.opensymphony.xwork2.util.TextUtils;
35  
36  public class DispatcherServlet extends HttpServlet implements PortletActionConstants {
37  
38  	private static final long serialVersionUID = -266147033645951967L;
39  
40  	@Override
41  	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
42  		String dispatchTo = (String) request.getAttribute(DISPATCH_TO);
43  		HttpServletRequest wrapper = wrapRequestIfNecessary(request);
44  		if(TextUtils.stringSet(dispatchTo)) {
45  			request.getRequestDispatcher(dispatchTo).include(wrapper, response);
46  		}
47  	}
48  
49  	private HttpServletRequest wrapRequestIfNecessary(HttpServletRequest request) {
50  		if(!(request instanceof StrutsRequestWrapper)) {
51  			return new StrutsRequestWrapper(request);
52  		}
53  		else {
54  			return request;
55  		}
56  	}
57  
58  }