Java tutorial
/********************************************************************************* * Ephesoft is a Intelligent Document Capture and Mailroom Automation program * developed by Ephesoft, Inc. Copyright (C) 2015 Ephesoft Inc. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by the * Free Software Foundation with the addition of the following permission added * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK * IN WHICH THE COPYRIGHT IS OWNED BY EPHESOFT, EPHESOFT DISCLAIMS THE WARRANTY * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License along with * this program; if not, see http://www.gnu.org/licenses or write to the Free * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301 USA. * * You can contact Ephesoft, Inc. headquarters at 111 Academy Way, * Irvine, CA 92617, USA. or at email address info@ephesoft.com. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License version 3, * these Appropriate Legal Notices must retain the display of the "Ephesoft" logo. * If the display of the logo is not reasonably feasible for * technical reasons, the Appropriate Legal Notices must display the words * "Powered by Ephesoft". ********************************************************************************/ package com.ephesoft.gxt.admin.server; import java.io.File; import java.io.IOException; import java.util.zip.ZipOutputStream; import com.ephesoft.dcma.util.EphesoftStringUtil; import com.ephesoft.dcma.util.FileUtils; import com.ephesoft.dcma.util.logger.EphesoftLogger; import com.ephesoft.dcma.util.logger.EphesoftLoggerFactory; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import com.ephesoft.dcma.batch.service.BatchSchemaService; import com.ephesoft.gxt.admin.client.i18n.BatchClassConstants; import com.ephesoft.gxt.core.server.DCMAHttpServlet; /** * Servlet implementation class TestContentResultDownloadServlet */ public class TestExtractionResultDownloadServlet extends DCMAHttpServlet { private static final long serialVersionUID = 1L; /** * CONTENT_TYPE String. */ private static final String APPLICATION_ZIP = "application/x-zip\r\n"; /** * CONTENT_DISPOSITION String. */ private static final String CONTENT_DISPOSITION = "Content-Disposition"; /** * UNDER_SCORE String. */ private static final String UNDER_SCORE = "_"; /** * LOGGER Logger. */ private static EphesoftLogger LOGGER = EphesoftLoggerFactory.getLogger(TestContentResultDownloadServlet.class); /** * @see HttpServlet#HttpServlet() */ public TestExtractionResultDownloadServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { LOGGER.info("Downloading the result file."); final String identifier = request.getParameter("batchClassIdentifier"); final String zipFileName = EphesoftStringUtil.concatenate(identifier, UNDER_SCORE, "Result"); LOGGER.info("Zip File Name is " + zipFileName); response.setContentType(APPLICATION_ZIP); final String downloadedFile = EphesoftStringUtil.concatenate(zipFileName, ".zip", "\"\r\n"); response.setHeader(CONTENT_DISPOSITION, "attachment; filename=\"" + downloadedFile); final BatchSchemaService batchService = this.getSingleBeanOfType(BatchSchemaService.class); StringBuilder folderPathBuilder = new StringBuilder(batchService.getBaseFolderLocation()); folderPathBuilder.append(File.separator); folderPathBuilder.append(identifier); File batchClassFolder = new File(folderPathBuilder.toString()); if (!batchClassFolder.exists()) { LOGGER.info("Batch Class Folder does not exist."); throw new IOException("Unable to download extraction result. Batch Class Folder does not exist."); } // The path for test classification folder is found....... folderPathBuilder.append(File.separator); folderPathBuilder.append(BatchClassConstants.TEST_EXTRACTION_FOLDER_NAME); folderPathBuilder.append(File.separator); folderPathBuilder.append("test-extraction-result"); System.out.println("The path is : " + folderPathBuilder.toString()); File file = new File(folderPathBuilder.toString()); if (!file.exists()) { throw new IOException("Unable to download the files. The file does not exist."); } LOGGER.info("File path is " + folderPathBuilder.toString()); ServletOutputStream out = null; ZipOutputStream zout = null; try { out = response.getOutputStream(); zout = new ZipOutputStream(out); FileUtils.zipDirectoryWithFullName(folderPathBuilder.toString(), zout); } catch (IOException ioException) { LOGGER.error("Unable to download the files." + ioException, ioException); response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "Problem occured in downloading."); } finally { IOUtils.closeQuietly(zout); IOUtils.closeQuietly(out); } } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }