001 /* 002 * Copyright (c) 2009 The openGion Project. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 013 * either express or implied. See the License for the specific language 014 * governing permissions and limitations under the License. 015 */ 016 package org.opengion.hayabusa.filter; 017 018 import org.opengion.fukurou.util.Closer; 019 020 import java.io.PrintWriter; 021 import java.io.IOException; 022 import java.io.OutputStreamWriter; 023 import javax.servlet.ServletOutputStream; 024 import javax.servlet.http.HttpServletResponseWrapper; 025 import javax.servlet.http.HttpServletResponse; 026 027 /** 028 * FileFilter で使用する、File圧縮されたレスポンスのラ?クラスです? 029 * 030 * @og.group フィルター処? 031 * 032 * @version 4.0 033 * @author Kazuhiko Hasegawa 034 * @since JDK5.0, 035 */ 036 public class FileResponseWrapper extends HttpServletResponseWrapper { 037 /** レスポンスオブジェク?*/ 038 protected HttpServletResponse origResponse = null; 039 /** サーブレ?出力ストリー?*/ 040 protected ServletOutputStream stream = null; 041 /** 出力ライターオブジェク?*/ 042 protected PrintWriter writer = null; 043 044 private final String filename ; 045 046 /** 047 * コンストラクター 048 * 049 * @param response レスポンス 050 * @param filename ファイル? 051 */ 052 public FileResponseWrapper(final HttpServletResponse response,final String filename ) { 053 super(response); 054 this.filename = filename; 055 origResponse = response; 056 } 057 058 /** 059 * ServletOutputStream の実体である FileResponseStream を作?して返します? 060 * 061 * @return ServletOutputStreamオブジェク? 062 * @throws IOException 入出力エラーが発生したと? 063 */ 064 public ServletOutputStream createOutputStream() throws IOException { 065 return (new FileResponseStream(origResponse,filename)); 066 } 067 068 /** 069 * ?ストリー??クローズします? 070 * 071 */ 072 public void finishResponse() { 073 Closer.ioClose( writer ); 074 Closer.ioClose( stream ); 075 } 076 077 /** 078 * ?ストリー?? flush() メソ?を呼び出します? 079 * 080 */ 081 @Override 082 public void flushBuffer() throws IOException { 083 stream.flush(); 084 } 085 086 /** 087 * ?ServletOutputStreamを返します? 088 * 089 * ?オブジェクトが存在しな??合?、新規に作?します? 090 * 091 * @return ServletOutputStreamオブジェク? 092 */ 093 @Override 094 public ServletOutputStream getOutputStream() throws IOException { 095 if(writer != null) { 096 throw new IllegalStateException("getWriter() has already been called!"); 097 } 098 099 if(stream == null) { 100 stream = createOutputStream(); 101 } 102 return (stream); 103 } 104 105 /** 106 * ?PrintWriterを返します? 107 * 108 * ?オブジェクトが存在しな??合?、新規に作?します? 109 * 110 * @return PrintWriterオブジェク? 111 */ 112 @Override 113 public PrintWriter getWriter() throws IOException { 114 if(writer != null) { 115 return (writer); 116 } 117 118 if(stream != null) { 119 throw new IllegalStateException("getOutputStream() has already been called!"); 120 } 121 122 stream = createOutputStream(); 123 writer = new PrintWriter(new OutputStreamWriter(stream, "UTF-8")); 124 return (writer); 125 } 126 127 /** 128 * ?ストリー????タ長を設定しま?何もしません)? 129 * 130 * @param length ??タ長 131 */ 132 @Override 133 public void setContentLength(final int length) { 134 // ここでは処?行いません? 135 } 136 }