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   }