[Java] Tar Compress,Decompress Example

Download: commons-compress-1.16.1


1. Tar Compress Example

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public static void tar( File baseDir, List<File> list, File outFile ) throws IOException { TarArchiveOutputStream taos = new TarArchiveOutputStream(new FileOutputStream(outFile)); taos.setBigNumberMode(TarArchiveOutputStream.BIGNUMBER_STAR); taos.setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU); taos.setAddPaxHeadersForNonAsciiNames(true); if (list.size() > 0) { for (int i = 0; i < list.size(); i++) { String entryName = list.get(i).getPath().substring(baseDir.getPath().length()+1); taos.putArchiveEntry(new TarArchiveEntry(list.get(i), entryName)); try (FileInputStream in = new FileInputStream(list.get(i))){ byte[] buf = new byte[8 * 1024]; int length; while ((length = in.read(buf, 0, buf.length)) >= 0) { taos.write(buf, 0, length); } in.close(); taos.closeArchiveEntry(); } } } taos.close(); } static void tarTest() throws IOException { Compress cu = new Compress(); List<File> filelist = new ArrayList<File>(); filelist.add(new File("d:\\temp/qsort.c")); filelist.add(new File("d:\\temp\\a\\leaf.cpp")); File dir = new File("d:\\temp"); File zippedFile = new File ( "d:\\temp\\test.tar"); cu.tar(dir, filelist, zippedFile); }

2. Tar + gzip Compress Example

Put GzipCompressorOutputStream() when open TarArchiveOutputStream() 

1	TarArchiveOutputStream taos = new TarArchiveOutputStream(new GzipCompressorOutputStream(new FileOutputStream(name)));

3. Tar Decompress Example

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public static void untar( File inFile, File destDir ) throws IOException { TarArchiveInputStream tais = new TarArchiveInputStream(new FileInputStream(inFile)); TarArchiveEntry entry; destDir.mkdirs(); while ( (entry = tais.getNextTarEntry()) != null ){ String name = entry.getName(); File target = new File (destDir, name); System.out.println ("Entry : " + name); if ( entry.isDirectory() ){ target.mkdirs(); } else { if( ! target.getParentFile().exists() ) { target.getParentFile().mkdirs(); } target.createNewFile(); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(target)); byte [] buf = new byte[1024 * 8]; int len = 0; while ((len = tais.read(buf)) >= 0 ){ bos.write(buf, 0, len); } bos.close(); System.out.println ("File : " + name); } } tais.close(); } static void untarTest() throws IOException { Compress cu = new Compress(); File dir = new File("d:\\temp_tar"); File zippedFile = new File ( "d:\\temp\\test.tar"); cu.untar( zippedFile, dir); }

4. Tar + gzip Decompress Example

Put GzipCompressorInputStream() when open TarArchiveInputStream() 

1	TarArchiveInputStream fin = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream(in)))