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1   /*
2    * $Id$
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.rest.handler;
22  
23  import java.io.Writer;
24  import java.io.IOException;
25  import java.io.Reader;
26  
27  /***
28   * Handles the default content type for requests that originate from a browser's HTML form 
29   * with a file upload and multipart/from-data encoding
30   *
31   * content-type: multipart/form-data
32   *
33   * This handler is intended for requests only, not for responses
34   *
35   * {@link http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4}
36   *
37   */
38  public class MultipartFormDataHandler implements ContentTypeHandler {
39  
40      public static final String CONTENT_TYPE = "multipart/form-data";
41  
42      public String fromObject(Object obj, String resultCode, Writer out) throws IOException {
43          throw new IOException("Conversion from Object to '"+getContentType()+"' is not supported");
44      }
45  
46      /*** No transformation is required as the framework handles this data */
47      public void toObject(Reader in, Object target) {
48      }
49  
50      /***
51       * The extension is not used by this handler
52       * @return
53       */
54      public String getExtension() {
55          return null;
56      }
57  
58      public String getContentType() {
59          return CONTENT_TYPE;
60      }
61  }