Java InputStream to Temp File writeStreamToTempFile(String id, InputStream is)

Description

write Stream To Temp File

License

Open Source License

Declaration

private static File writeStreamToTempFile(String id, InputStream is)
            throws IOException 

Method Source Code

//package com.java2s;
/*//from ww w.  j  av a2  s . com
 * $Id:  $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2014 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, Kevin Day, et al.
 *
 * 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
 * ITEXT GROUP. ITEXT GROUP 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, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * 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.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {
    private static final String TESTPREFIX = "itexttest_";

    private static File writeStreamToTempFile(String id, InputStream is)
            throws IOException {
        if (is == null)
            throw new NullPointerException("Input stream is null");

        File f = File.createTempFile(TESTPREFIX + id + "-", ".pdf");
        f.deleteOnExit();

        final OutputStream os = new BufferedOutputStream(
                new FileOutputStream(f));

        try {
            writeInputToOutput(is, os);
        } finally {
            is.close();
            os.close();
        }

        return f;

    }

    private static void writeInputToOutput(InputStream is, OutputStream os)
            throws IOException {
        final byte[] buffer = new byte[8192];
        while (true) {
            final int bytesRead = is.read(buffer);
            if (bytesRead == -1) {
                break;
            }
            os.write(buffer, 0, bytesRead);
        }

    }
}

Related

1. writeStreamToTempFile(InputStream inputStream, String tempFileSuffix)