commons compress 创建 tar.gz

使用 jakarta.commons.compress-1.0.jar

 

public class Compress {
    public static void main(String[] args) throws IOException {
        String tarGzPath = "/home/ben/language/java/compress.tar.gz";
        String directoryPath = "/home/ben/language/java/Compress.java";

        Compress.createTarGzOfDirectory(directoryPath, tarGzPath);
    }

    /**
     * Creates a tar.gz file at the specified path with the contents of the specified directory.
     *
     * @param dirPath The path to the directory to create an archive of
     * @param archivePath The path to the archive to create
     * @throws IOException If anything goes wrong
     */
    public static void createTarGzOfDirectory(String directoryPath, String tarGzPath) throws IOException {
        FileOutputStream fOut = null;
        BufferedOutputStream bOut = null;
        GzipCompressorOutputStream gzOut = null;
        TarArchiveOutputStream tOut = null;

        try {
            fOut = new FileOutputStream(new File(tarGzPath));
            bOut = new BufferedOutputStream(fOut);
            gzOut = new GzipCompressorOutputStream(bOut);
            tOut = new TarArchiveOutputStream(gzOut);

            addFileToTarGz(tOut, directoryPath, "");
        } finally {
            tOut.finish();

            tOut.close();
            gzOut.close();
            bOut.close();
            fOut.close();
        }
    }

    /**
     * Creates a tar entry for the path specified with a name built from the base passed in and the file/directory name.
     * If the path is a directory, a recursive call is made such that the full directory is added to the tar.
     *
     * @param tOut The tar file's output stream
     * @param path The filesystem path of the file/directory being added
     * @param base The base prefix to for the name of the tar file entry
     * @throws IOException If anything goes wrong
     */
    private static void addFileToTarGz(TarArchiveOutputStream tOut, String path, String base) throws IOException {
        File f = new File(path);
        String entryName = base + f.getName();
        TarArchiveEntry tarEntry = new TarArchiveEntry(f, entryName);

        tOut.setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU);
        tOut.putArchiveEntry(tarEntry);

        if (f.isFile()) {
            IOUtils.copy(new FileInputStream(f), tOut);

            tOut.closeArchiveEntry();
        } else {
            tOut.closeArchiveEntry();

            File[] children = f.listFiles();

            if (children != null) {
                for (File child : children) {
                    addFileToTarGz(tOut, child.getAbsolutePath(), entryName + "/");
                }
            }
        }
    }

}

解压看这边博文：http://blog.pigflying.info/2011/06/commons-compresstargz.html

原文出处：http://www.thoughtspark.org/node/53