001 // Copyright 2005 The Apache Software Foundation 002 // 003 // Licensed under the Apache License, Version 2.0 (the "License"); 004 // you may not use this file except in compliance with the License. 005 // You may obtain a copy of the License at 006 // 007 // http://www.apache.org/licenses/LICENSE-2.0 008 // 009 // Unless required by applicable law or agreed to in writing, software 010 // distributed under the License is distributed on an "AS IS" BASIS, 011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 // See the License for the specific language governing permissions and 013 // limitations under the License. 014 015 package org.apache.tapestry.multipart; 016 017 import java.io.File; 018 import java.util.List; 019 import java.util.Map; 020 021 import javax.servlet.http.HttpServletRequest; 022 023 import org.apache.commons.fileupload.FileItemFactory; 024 import org.apache.commons.fileupload.FileUploadException; 025 import org.apache.commons.fileupload.disk.DiskFileItemFactory; 026 import org.apache.commons.fileupload.servlet.ServletFileUpload; 027 import org.apache.hivemind.ApplicationRuntimeException; 028 029 /** 030 * Implementation of {@link org.apache.tapestry.multipart.MultipartDecoder}that is based on <a 031 * href="http://jakarta.apache.org/commons/fileupload/">Jakarta FileUpload </a>. 032 * 033 * @author Howard M. Lewis Ship 034 * @author Joe Panico 035 * @since 4.0 036 */ 037 public class MultipartDecoderImpl extends AbstractMultipartDecoder implements ServletMultipartDecoder 038 { 039 /* maximum size of file allowed to be uploaded */ 040 protected long _maxSize = 10000000; 041 042 public HttpServletRequest decode(HttpServletRequest request) 043 { 044 _encoding = request.getCharacterEncoding(); 045 046 ServletFileUpload upload = createFileUpload(); 047 048 try 049 { 050 List fileItems = upload.parseRequest(request); 051 052 processFileItems(fileItems); 053 } 054 catch (FileUploadException ex) 055 { 056 throw new ApplicationRuntimeException(MultipartMessages.unableToDecode(ex), ex); 057 } 058 059 Map parameterMap = buildParameterMap(); 060 061 return new UploadFormParametersWrapper(request, parameterMap); 062 } 063 064 private ServletFileUpload createFileUpload() { 065 FileItemFactory factory = new DiskFileItemFactory(_thresholdSize, new File(_repositoryPath)); 066 ServletFileUpload upload = new ServletFileUpload(factory); 067 068 // set maximum file upload size 069 upload.setSizeMax(_maxSize); 070 071 if (_encoding != null) 072 upload.setHeaderEncoding(_encoding); 073 074 return upload; 075 } 076 077 /** 078 * Sets the maximum size that an uploaded file will be allowed to have. 079 * @param maxSize The maximum size, in bytes. 080 */ 081 public void setMaxSize(long maxSize) 082 { 083 _maxSize = maxSize; 084 } 085 }