Java tutorial
/* * This file is part of the Echo File Transfer Library (hereinafter "EFTL"). * Copyright (C) 2002-2009 NextApp, Inc. * * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for * the specific language governing rights and limitations under the License. * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or the * GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which * case the provisions of the GPL or the LGPL are applicable instead of those * above. If you wish to allow use of your version of this file only under the * terms of either the GPL or the LGPL, and not to allow others to use your * version of this file under the terms of the MPL, indicate your decision by * deleting the provisions above and replace them with the notice and other * provisions required by the GPL or the LGPL. If you do not delete the * provisions above, a recipient may use your version of this file under the * terms of any one of the MPL, the GPL or the LGPL. * * * NOTICE: * * This product includes software developed by the Apache Software Foundation * (http://www.apache.org/). */ package nextapp.echo2.webcontainer.filetransfer; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import nextapp.echo2.app.filetransfer.UploadSelect; import nextapp.echo2.webrender.Connection; import org.apache.commons.fileupload.DiskFileUpload; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; /** * Implementation of MultipartUploadSPI that uses the Jakarta Commons FileUpload * library to perform the parsing of multipart HttpServletRequests. */ public class JakartaCommonsFileUploadProvider extends AbstractFileUploadProvider { /** * @see nextapp.echo2.webcontainer.filetransfer.MultipartUploadSPI#updateComponent(nextapp.echo2.webrender.Connection, * nextapp.echo2.app.filetransfer.UploadSelect) */ public void updateComponent(Connection conn, UploadSelect uploadSelect) throws IOException, ServletException { DiskFileUpload handler = null; HttpServletRequest request = null; List items = null; Iterator it = null; FileItem item = null; boolean searching = true; InputStream in = null; int size = 0; String contentType = null; String name = null; try { handler = new DiskFileUpload(); handler.setSizeMax(getFileUploadSizeLimit()); handler.setSizeThreshold(getMemoryCacheThreshold()); handler.setRepositoryPath(getDiskCacheLocation().getCanonicalPath()); request = conn.getRequest(); items = handler.parseRequest(request); searching = true; it = items.iterator(); while (it.hasNext() && searching) { item = (FileItem) it.next(); if (UploadFormService.FILE_PARAMETER_NAME.equals(item.getFieldName())) { in = item.getInputStream(); size = (int) item.getSize(); contentType = item.getContentType(); name = item.getName(); File tempFile = writeTempFile(in, uploadSelect); UploadEvent uploadEvent = new UploadEvent(tempFile, size, contentType, name); UploadSelectPeer.activateUploadSelect(uploadSelect, uploadEvent); searching = false; } } } catch (FileUploadException e) { throw new IOException(e.getMessage()); } } }