使用Java Tar Package读取*.tar 或*.tar.gz 文件

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;

public class UnZip {
 public static  void visitTARGZ(File targzFile) throws IOException {
  FileInputStream fileIn = null;
  BufferedInputStream bufIn = null;
  GZIPInputStream gzipIn = null;
  TarArchiveInputStream taris = null;
  try {
   fileIn = new FileInputStream(targzFile);
   bufIn = new BufferedInputStream(fileIn);
   gzipIn = new GZIPInputStream(bufIn); // first unzip the input file
             // stream.
   taris = new TarArchiveInputStream(gzipIn);

   TarArchiveEntry entry = null;
   while ((entry = taris.getNextTarEntry()) != null) {
    if (entry.isDirectory())
     continue;
    // configure(taris, ((TarArchiveEntry) entry).getFile());
    // //process every entry in this tar file.
    System.out.println(entry);
    File file = entry.getFile();
//    System.out.println(file.getName());
    System.out.println(entry.getSize());
//    FileInputStream fo = new FileInputStream(file);
    
    byte[] b = new byte[(int) entry.getSize()];
//    fo.read(b);
    taris.read(b);
    taris.read(b, 0, (int) entry.getSize());
    System.out.println(b.length);
    System.out.println(b);
   }
  } finally {
   taris.close();
   gzipIn.close();
   bufIn.close();
   fileIn.close();
  }
 }
 
 public static void main(String[] args) {
  try {
   visitTARGZ(new File("d://release_package.tar.gz"));
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

}