View Javadoc
1 /* 2 * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/StatusLine.java,v 1.9 2003/04/01 00:25:24 mbecke Exp $ 3 * $Revision: 1.9 $ 4 * $Date: 2003/04/01 00:25:24 $ 5 * 6 * ==================================================================== 7 * 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 1999-2003 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, if 26 * any, must include the following acknowlegement: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowlegement may appear in the software itself, 30 * if and wherever such third-party acknowlegements normally appear. 31 * 32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 33 * Foundation" must not be used to endorse or promote products derived 34 * from this software without prior written permission. For written 35 * permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache" 38 * nor may "Apache" appear in their names without prior written 39 * permission of the Apache Group. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>. 59 * 60 * [Additional notices, if required by prior licensing conditions] 61 * 62 */ 63 64 package org.apache.commons.httpclient; 65 66 /*** 67 * Represents a Status-Line as returned from a HTTP server. 68 * 69 * <a href="http://www.ietf.org/rfc/rfc2616.txt">RFC2616</a> states 70 * the following regarding the Status-Line: 71 * <pre> 72 * 6.1 Status-Line 73 * 74 * The first line of a Response message is the Status-Line, consisting 75 * of the protocol version followed by a numeric status code and its 76 * associated textual phrase, with each element separated by SP 77 * characters. No CR or LF is allowed except in the final CRLF sequence. 78 * 79 * Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF 80 * </pre> 81 * <p> 82 * This class is immutable and is inherently thread safe. 83 * 84 * @see HttpStatus 85 * @author <a href="mailto:jsdever@apache.org">Jeff Dever</a> 86 * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> 87 * @version $Id: StatusLine.java,v 1.9 2003/04/01 00:25:24 mbecke Exp $ 88 * @since 2.0 89 */ 90 public class StatusLine { 91 92 // ----------------------------------------------------- Instance Variables 93 94 /*** The original Status-Line. */ 95 private final String statusLine; 96 97 /*** The HTTP-Version. */ 98 private final String httpVersion; 99 100 /*** The Status-Code. */ 101 private final int statusCode; 102 103 /*** The Reason-Phrase. */ 104 private final String reasonPhrase; 105 106 107 // ----------------------------------------------------------- Constructors 108 109 /*** 110 * Default constructor. 111 * 112 * @param statusLine the status line returned from the HTTP server 113 * @throws HttpException if the status line is invalid 114 */ 115 public StatusLine(String statusLine) 116 throws HttpException { 117 118 //save the original Status-Line 119 this.statusLine = new String(statusLine); 120 int length = statusLine.length(); 121 122 123 //check validity of the Status-Line 124 if (!statusLine.startsWith("HTTP")) { 125 throw new HttpException("Status-Line '" + statusLine 126 + "' does not start with HTTP"); 127 } 128 129 //handle the HTTP-Version 130 int at = statusLine.indexOf(" "); 131 if (at <= 0) { 132 throw new HttpException( 133 "Unable to parse HTTP-Version from the status line: '" 134 + statusLine + "'"); 135 } 136 this.httpVersion = (statusLine.substring(0, at)).toUpperCase(); 137 138 //advance through spaces 139 while (statusLine.charAt(at) == ' ') { 140 at++; 141 } 142 143 //handle the Status-Code 144 int to = statusLine.indexOf(" ", at); 145 if (to < 0) { 146 to = length; 147 } 148 try { 149 this.statusCode = Integer.parseInt(statusLine.substring(at, to)); 150 } catch (NumberFormatException e) { 151 throw new HttpException( 152 "Unable to parse status code from status line: '" 153 + statusLine + "'"); 154 } 155 156 //handle the Reason-Phrase 157 at = to + 1; 158 try { 159 if (at < length) { 160 this.reasonPhrase = statusLine.substring(at).trim(); 161 } else { 162 this.reasonPhrase = ""; 163 } 164 } catch (StringIndexOutOfBoundsException e) { 165 throw new HttpException("Status text not specified: '" 166 + statusLine + "'"); 167 } 168 } 169 170 171 // --------------------------------------------------------- Public Methods 172 173 /*** 174 * @return the Status-Code 175 */ 176 public final int getStatusCode() { 177 return statusCode; 178 } 179 180 /*** 181 * @return the HTTP-Version 182 */ 183 public final String getHttpVersion() { 184 return httpVersion; 185 } 186 187 /*** 188 * @return the Reason-Phrase 189 */ 190 public final String getReasonPhrase() { 191 return reasonPhrase; 192 } 193 194 /*** 195 * Return a string representation of this object. 196 * @return a string represenation of this object. 197 */ 198 public final String toString() { 199 return statusLine; 200 } 201 }

This page was automatically generated by Maven