1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/ResponseContent.java $ 3 * $Revision: 573864 $ 4 * $Date: 2007-09-08 08:53:25 -0700 (Sat, 08 Sep 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.protocol; 33 34 import java.io.IOException; 35 36 import org.apache.http.HttpEntity; 37 import org.apache.http.HttpException; 38 import org.apache.http.HttpResponse; 39 import org.apache.http.HttpResponseInterceptor; 40 import org.apache.http.HttpStatus; 41 import org.apache.http.HttpVersion; 42 import org.apache.http.ProtocolVersion; 43 import org.apache.http.ProtocolException; 44 45 /** 46 * A response interceptor that sets up entity-related headers. 47 * For use on the server side. 48 * 49 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 50 * 51 * @version $Revision: 573864 $ 52 * 53 * @since 4.0 54 * 55 * @deprecated Please use {@link java.net.URL#openConnection} instead. 56 * Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a> 57 * for further details. 58 */ 59 @Deprecated 60 public class ResponseContent implements HttpResponseInterceptor { 61 ResponseContent()62 public ResponseContent() { 63 super(); 64 } 65 process(final HttpResponse response, final HttpContext context)66 public void process(final HttpResponse response, final HttpContext context) 67 throws HttpException, IOException { 68 if (response == null) { 69 throw new IllegalArgumentException("HTTP request may not be null"); 70 } 71 if (response.containsHeader(HTTP.TRANSFER_ENCODING)) { 72 throw new ProtocolException("Transfer-encoding header already present"); 73 } 74 if (response.containsHeader(HTTP.CONTENT_LEN)) { 75 throw new ProtocolException("Content-Length header already present"); 76 } 77 ProtocolVersion ver = response.getStatusLine().getProtocolVersion(); 78 HttpEntity entity = response.getEntity(); 79 if (entity != null) { 80 long len = entity.getContentLength(); 81 if (entity.isChunked() && !ver.lessEquals(HttpVersion.HTTP_1_0)) { 82 response.addHeader(HTTP.TRANSFER_ENCODING, HTTP.CHUNK_CODING); 83 } else if (len >= 0) { 84 response.addHeader(HTTP.CONTENT_LEN, Long.toString(entity.getContentLength())); 85 } 86 // Specify a content type if known 87 if (entity.getContentType() != null && !response.containsHeader( 88 HTTP.CONTENT_TYPE )) { 89 response.addHeader(entity.getContentType()); 90 } 91 // Specify a content encoding if known 92 if (entity.getContentEncoding() != null && !response.containsHeader( 93 HTTP.CONTENT_ENCODING)) { 94 response.addHeader(entity.getContentEncoding()); 95 } 96 } else { 97 int status = response.getStatusLine().getStatusCode(); 98 if (status != HttpStatus.SC_NO_CONTENT 99 && status != HttpStatus.SC_NOT_MODIFIED 100 && status != HttpStatus.SC_RESET_CONTENT) { 101 response.addHeader(HTTP.CONTENT_LEN, "0"); 102 } 103 } 104 } 105 106 } 107