JAVA解压tar，可以使用javatar

/**
     * 解压缩tar文件
     * @param file 压缩包文件
     * @param targetPath 目标文件夹
     * @param delete 解压后是否删除原压缩包文件
     */
    private static void decompressTar(File file, String targetPath, boolean delete){
        FileInputStream fis = null;
        OutputStream fos = null;
        TarInputStream tarInputStream = null;
        try {
            fis = new FileInputStream(file);
            tarInputStream = new TarInputStream(fis, 1024 * 2);
            // 创建输出目录
            createDirectory(targetPath, null);
            TarEntry entry = null;
            while(true){
                entry = tarInputStream.getNextEntry();
                if( entry == null){
                    break;
                }
                if(entry.isDirectory()){
                    createDirectory(targetPath, entry.getName()); // 创建子目录
                }else{
                    fos = new FileOutputStream(new File(targetPath + File.separator + entry.getName()));
                    int count;
                    byte data[] = new byte[2048];
                    while ((count = tarInputStream.read(data)) != -1) {
                        fos.write(data, 0, count);
                    }
                    fos.flush();
                }
            }
        } catch (IOException e) {
           e.printStackTrace();
        }finally {
            try {
                if(fis != null){
                    fis.close();
                }
                if(fos != null){
                    fos.close();
                }
                if(tarInputStream != null){
                    tarInputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }