Java tutorial
/* * DSS - Digital Signature Services * * Copyright (C) 2011 European Commission, Directorate-General Internal Market and Services (DG MARKT), B-1049 Bruxelles/Brussel * * Developed by: 2011 ARHS Developments S.A. (rue Nicolas Bov 2B, L-1253 Luxembourg) http://www.arhs-developments.com * * This file is part of the "DSS - Digital Signature Services" project. * * "DSS - Digital Signature Services" is free software: you can redistribute it and/or modify it under the terms of * the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the * License, or (at your option) any later version. * * DSS 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with * "DSS - Digital Signature Services". If not, see <http://www.gnu.org/licenses/>. */ package eu.europa.ec.markt.dss.signature; import eu.europa.ec.markt.dss.exception.DSSException; import org.apache.commons.io.IOUtils; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; /** * Document implementation stored on file-system. * * * @version $Revision: 2823 $ - $Date: 2013-10-29 20:39:42 +0100 (mar., 29 oct. 2013) $ */ public class FileDocument implements DSSDocument { private final File file; /** * Create a FileDocument * * @param pathname */ public FileDocument(String pathname) { this(new File(pathname)); } /** * Create a FileDocument * * @param file */ public FileDocument(File file) { if (!file.exists()) { throw new RuntimeException("File Not Found: " + file.getAbsolutePath()); } this.file = file; } @Override public FileInputStream openStream() throws IOException { return new FileInputStream_(file); } public boolean exists() { return file.exists(); } public File getParentFile() { return file.getParentFile(); } @Override public String getName() { return file.getName(); } @Override public String getAbsolutePath() { return file.getAbsolutePath(); } @Override public MimeType getMimeType() { return MimeType.fromFileName(getName()); } @Override public byte[] getBytes() throws DSSException { try { return IOUtils.toByteArray(openStream()); } catch (IOException e) { throw new DSSException(e); } } @Override public void save(String filePath) { try { FileOutputStream fos = new FileOutputStream(filePath); IOUtils.write(getBytes(), fos); fos.close(); } catch (FileNotFoundException e) { throw new DSSException(e); } catch (DSSException e) { throw new DSSException(e); } catch (IOException e) { throw new DSSException(e); } } }