利用Java怎么对文件目录进行远程共享

/**
  * 方法说明：从远程共享目录下载文件
  * @param localDir   本地临时路径
  * @param removeDir  远程共享路径
  * @param _fileName  远程共享文件名
  * @param removeIp   远程共享目录IP
  * @param removeLoginUser 远程共享目录用户名
  * @param removeLoginPass 远程共享目录密码
  * @return
  * @throws Exception
  */
 public static int smbDownload(String localDir, String removeDir,
   String _fileName, String removeIp, String removeLoginUser,
   String removeLoginPass) throws Exception {
  InputStream in = null;
  OutputStream out = null;
  try {
   NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(
     removeIp, removeLoginUser, removeLoginPass);
   SmbFile remoteFile = new SmbFile(removeDir + _fileName, auth);
   if (!remoteFile.exists()) {
    return 0;
   }
   File dir = new File(localDir);
   if (!dir.exists()) {
    dir.mkdirs();
   }
   String fileName = _fileName.substring(_fileName.lastIndexOf("\\")+1, _fileName.length());
   File localFile = new File(localDir + fileName);
   in = new BufferedInputStream(new SmbFileInputStream(remoteFile));
   out = new BufferedOutputStream(new FileOutputStream(localFile));
   byte[] buffer = new byte[1024];
   while (in.read(buffer) != -1) {
    out.write(buffer);
    buffer = new byte[1024];
   }
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   try {
    if (null != out) {
     out.close();
    }
   } catch (IOException e) {
    e.printStackTrace();
   } finally {
    if (null != in) {
     try {
      in.close();
     } catch (IOException e) {
      e.printStackTrace();
     }
    }
   }
  }
  return 1;
 }

/**
  * 方法说明：上传文件到远程共享目录
  * @param localDir   本地临时路径(A:/测试/测试.xls)
  * @param removeDir  远程共享路径(smb://10.169.2.xx/测试/,特殊路径只能用/)
  * @param removeIp   远程共享目录IP(10.169.2.xx)
  * @param removeLoginUser 远程共享目录用户名(user)
  * @param removeLoginPass 远程共享目录密码(password)
  * @return
  * @throws Exception 0成功/-1失败
  */
 public static int smbUploading(String localDir, String removeDir,
   String removeIp, String removeLoginUser, String removeLoginPass) throws Exception {
  NtlmPasswordAuthentication auth = null;
  OutputStream out = null;
  int retVal = 0; 
  try {
   File dir = new File(localDir);
   if (!dir.exists()) {
    dir.mkdirs();
   }
   InetAddress ip = InetAddress.getByName(removeIp); 
   UniAddress address = new UniAddress(ip);
   // 权限验证
    auth = new NtlmPasswordAuthentication(removeIp, removeLoginUser, removeLoginPass);
   SmbSession.logon(address,auth); 
   //远程路径判断文件文件路径是否合法
   SmbFile remoteFile = new SmbFile(removeDir + dir.getName(), auth);
   remoteFile.connect();  
   if(remoteFile.isDirectory()){ 
    retVal = -1;
   }
   // 向远程共享目录写入文件
   out = new BufferedOutputStream(new SmbFileOutputStream(remoteFile));
   out.write(toByteArray(dir));
  } catch (UnknownHostException e) {
   retVal = -1;
   e.printStackTrace();
  } catch (MalformedURLException e) {
   retVal = -1;
   e.printStackTrace();
  } catch (SmbException e) {
   retVal = -1;
   e.printStackTrace();
  } catch (IOException e) {
   retVal = -1;
   e.printStackTrace();
  } finally{
   if (out != null) {
    try {
     out.close();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
  }
  return retVal;
 }
 /**
  * Mapped File way MappedByteBuffer 可以在处理大文件时，提升性能
  *
  * @param file 文件
  * @return 字节数组
  * @throws IOException IO异常信息
  */
 @SuppressWarnings("resource")
 public static byte[] toByteArray(File file) throws IOException {
  FileChannel fc = null;
  try {
   fc = new RandomAccessFile(file, "r").getChannel();
   MappedByteBuffer byteBuffer = fc.map(MapMode.READ_ONLY, 0,
     fc.size()).load();
   byte[] result = new byte[(int) fc.size()];
   if (byteBuffer.remaining() > 0) {
    byteBuffer.get(result, 0, byteBuffer.remaining());
   }
   return result;
  } catch (IOException e) {
   e.printStackTrace();
   throw e;
  } finally {
   try {
    fc.close();
   } catch (IOException e) {
    e.printStackTrace();
   }
  }
 }