001/* 002 * ==================================================================== 003 * Licensed to the Apache Software Foundation (ASF) under one 004 * or more contributor license agreements. See the NOTICE file 005 * distributed with this work for additional information 006 * regarding copyright ownership. The ASF licenses this file 007 * to you under the Apache License, Version 2.0 (the 008 * "License"); you may not use this file except in compliance 009 * with the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, 014 * software distributed under the License is distributed on an 015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 016 * KIND, either express or implied. See the License for the 017 * specific language governing permissions and limitations 018 * under the License. 019 * ==================================================================== 020 * 021 * This software consists of voluntary contributions made by many 022 * individuals on behalf of the Apache Software Foundation. For more 023 * information on the Apache Software Foundation, please see 024 * <http://www.apache.org/>. 025 * 026 */ 027 028package org.apache.http.client.methods; 029 030import java.net.URI; 031 032/** 033 * HTTP HEAD method. 034 * <p> 035 * The HTTP HEAD method is defined in section 9.4 of 036 * <a href="http://www.ietf.org/rfc/rfc2616.txt">RFC2616</a>: 037 * </p> 038 * <blockquote> 039 * The HEAD method is identical to GET except that the server MUST NOT 040 * return a message-body in the response. The metainformation contained 041 * in the HTTP headers in response to a HEAD request SHOULD be identical 042 * to the information sent in response to a GET request. This method can 043 * be used for obtaining metainformation about the entity implied by the 044 * request without transferring the entity-body itself. This method is 045 * often used for testing hypertext links for validity, accessibility, 046 * and recent modification. 047 * </blockquote> 048 * 049 * @since 4.0 050 */ 051public class HttpHead extends HttpRequestBase { 052 053 public final static String METHOD_NAME = "HEAD"; 054 055 public HttpHead() { 056 super(); 057 } 058 059 public HttpHead(final URI uri) { 060 super(); 061 setURI(uri); 062 } 063 064 /** 065 * @throws IllegalArgumentException if the uri is invalid. 066 */ 067 public HttpHead(final String uri) { 068 super(); 069 setURI(URI.create(uri)); 070 } 071 072 @Override 073 public String getMethod() { 074 return METHOD_NAME; 075 } 076 077}