Java Unzip File unzip(File zipFile, File destDir)

Description

Unzip an archive into the directory destDir.

License

Open Source License

Parameter

Parameter	Description
zipFile	a parameter
destDir	a parameter

Exception

Parameter	Description
IOException	an exception

Declaration

public static void unzip(File zipFile, File destDir) throws IOException 

Method Source Code

//package com.java2s;
/**//  www.j  a  va  2s  .c  o  m
 * OrbisGIS is a GIS application dedicated to scientific spatial simulation.
 * This cross-platform GIS is developed at French IRSTV institute and is able to
 * manipulate and create vector and raster spatial information.
 *
 * OrbisGIS is distributed under GPL 3 license. It is produced by the "Atelier SIG"
 * team of the IRSTV Institute <http://www.irstv.fr/> CNRS FR 2488.
 *
 * Copyright (C) 2007-2012 IRSTV (FR CNRS 2488)
 *
 * This file is part of OrbisGIS.
 *
 * OrbisGIS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * OrbisGIS 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * OrbisGIS. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, please consult: <http://www.orbisgis.org/>
 * or contact directly:
 * info_at_ orbisgis.org
 */

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import java.io.IOException;

import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class Main {
    private static final int BUF_SIZE = 1024 * 64;

    /**
     * Unzip an archive into the directory destDir.
     * @param zipFile
     * @param destDir
     * @throws IOException
     */
    public static void unzip(File zipFile, File destDir) throws IOException {
        ZipInputStream zis = null;

        try {
            FileInputStream fis = new FileInputStream(zipFile);
            zis = new ZipInputStream(new BufferedInputStream(fis));
            ZipEntry entry = zis.getNextEntry();
            while (entry != null) {
                byte data[] = new byte[BUF_SIZE];
                // write the files to the disk
                File newFile = new File(destDir, entry.getName());
                File parentFile = newFile.getParentFile();
                if (!parentFile.exists() && !parentFile.mkdirs()) {
                    throw new IOException("Cannot create directory:" + parentFile);
                }
                if (!entry.isDirectory()) {
                    BufferedOutputStream dest = null;
                    try {
                        FileOutputStream fos = new FileOutputStream(newFile);
                        dest = new BufferedOutputStream(fos, BUF_SIZE);
                        int count = zis.read(data, 0, BUF_SIZE);
                        while (count != -1) {
                            dest.write(data, 0, count);
                            count = zis.read(data, 0, BUF_SIZE);
                        }
                        dest.flush();
                    } finally {
                        if (dest != null) {
                            dest.close();
                        }
                    }
                }
                entry = zis.getNextEntry();
            }
        } finally {
            if (zis != null) {
                zis.close();
            }
        }
    }
}

Related

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2. unzip(File zip, File toDir)
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4. unZip(File zipf, String targetDir)
5. unzip(File zipFile, File dest)
6. unzip(File zipFile, File destDir)
7. unzip(File zipFile, File destDir)
8. unzip(File zipFile, File destDir)
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