Java decompression. zip,. tar.gz,. tar.bz2 (Support Chinese)

This article describes the way Java unzip. zip,. tar.gz,. tar.bz2.

1. For zip files: use java.util.zip.ZipEntry and java.util.zip.ZipFile , by setting Charset to StandardCharsets.UTF_8 support Chinese.
2. For. tar.gz, tgz files: You can consider packing with tar first and then using GZ for compression. Use commons-compress the and of the package TarArchiveInputStream GzipCompressorInputStream .
3. For. tar.bz2 files: You can consider packing with tar first and then compressing with bz2. Use commons-compress the and of the package TarArchiveInputStream BZip2CompressorInputStream .

There is a problem here if you use a TarInputStream jdk with a mix of GZIPInputStream garbled. And the use commons-compress of the package TarArchiveInputStream GzipCompressorInputStream can solve the garbled problem.

The code is as follows:

public class Ziputil {private static final Logger LOG = Loggerfactory.getlogger (Ziputil.class);    private static final int buffer_size = 1024 * 100;        Private Ziputil () {} public static Boolean decompress (string FilePath, String OutputDir, Boolean isDeleted) {        File File = new file (FilePath);            if (!file.exists ()) {log.error ("decompress file not exist.");        return false;            } try {if (Filepath.endswith (". zip")) {UnZip (file, OutputDir); } if (Filepath.endswith (". tar.gz") | | | Filepath.endswith (". tgz")) {decompresstargz (file, Outputd            IR);            } if (Filepath.endswith (". tar.bz2")) {decompressTarBz2 (file, OutputDir);            } filterfile (New File (OutputDir));            if (isDeleted) {fileutils.deletequietly (file);        } return true; } catch (IOException e) {log.error ("DecoMpress occur error. ");}    return false; /** * Unzip the. zip file * * @param file to extract the zip file object * @param outputDir to extract to a specified directory * @throws ioexc Eption */public static void UnZip (file file, String OutputDir) throws IOException {try (ZipFile ZipFile =            New ZipFile (file, standardcharsets.utf_8)) {//Create output directory CreateDirectory (outputDir, NULL);            Enumeration<?> enums = Zipfile.entries ();                while (Enums.hasmoreelements ()) {ZipEntry entry = (zipentry) enums.nextelement ();                if (Entry.isdirectory ()) {//Create empty directory CreateDirectory (OutputDir, Entry.getname ()); } else {try (InputStream in = Zipfile.getinputstream (entry)) {try (OutputStream out = new FileOutputStream (new File (OutputDir + file.separator + Entry.getna Me ())) {WritefIle (in, out);  }}}}} public static void Decompresstargz (file file, String OutputDir) throws IOException {try (tararchiveinputstream Tarin = new Tararchiveinputstream (New G Zipcompressorinputstream (New Bufferedinputstream (New Fileinputstre            AM (file))) {//Create output directory CreateDirectory (outputDir, NULL);            Tararchiveentry entry = null;                    while ((entry = Tarin.getnexttarentry ()) = null) {//Is the directory if (Entry.isdirectory ()) {                Create an empty directory CreateDirectory (OutputDir, Entry.getname ());                            } else {//is a file try (outputstream out = new FileOutputStream (              New File (OutputDir + file.separator + entry.getname ()))) {WriteFile (Tarin, out);      }}}}}/** * Unzip tar.bz2 file * * @param file archive * @pa        Ram OutputDir Destination Folder */public static void decompressTarBz2 (file file, String OutputDir) throws IOException { Try (tararchiveinputstream Tarin = new Tararchiveinputstream (New Bzip2co Mpressorinputstream (new FileInputStream (file))) {CreateDirectory (OUTPUTD            IR, NULL);            Tararchiveentry entry; while ((entry = Tarin.getnexttarentry ()) = null) {if (Entry.isdirectory ()) {Createdir                Ectory (OutputDir, Entry.getname ()); } else {try (outputstream out = new FileOutputStream (The new File (OutputDir +                    File.separator + entry.getname ())) {WriteFile (Tarin, out); }                }            }        }    }    /**     * Write file * * @param in * @param out * @throws IOException */public static void WriteFile (InputStream i        N, OutputStream out) throws IOException {int length;        Byte[] B = new Byte[buffer_size];        while (length = In.read (b))! =-1) {out.write (b, 0, length); }}/** * Create directory * * @param outputDir * @param subdir * * public static void CreateDirectory (STR        ing OutputDir, String subdir) {File File = new file (OutputDir); The subdirectory is not empty if (! ( SubDir = = NULL | |        Subdir.trim (). Equals (""))) {file = new file (OutputDir + file.separator + subdir); } if (!file.exists ()) {if (!file.getparentfile (). exists ()) {File.getparentfile (). mkdirs            ();        } file.mkdirs (); }}/** * Remove Mac compression and unzip the resulting __macosx folder and the. Other files that begin with. * @param filteredfile */public static void filt Erfile (File filteredfile) {if (filteredfile! = null) {file[] files = filteredfile.listfiles ();                        for (File file:files) {if (File.getname (). StartsWith (".") | | (File.isdirectory () && file.getname (). Equals ("__macosx")))                {fileutils.deletequietly (file); }            }        }    }}

Code address

reference Documentation :

1. Commons-compress Official Example

Java decompression. zip,. tar.gz,. tar.bz2 (Support Chinese)