ftp上传（java）

//ftp上传文件
  private void ftpUpload(String filePath,String fileName) {
    String serverName = "192.168.99.6";
    String userName = "trayton//ftpguest";
    String passWord = " QwH@iAE7861";
    TelnetOutputStream os = null;
    FileInputStream fis = null;
    FtpClient fc = null;
    try {
      fc = new FtpClient(serverName);
      fc.login(userName, passWord);
      fc.cd("test");
      fc.binary();//二进制上传文件
      os = fc.put(fileName);
      File file = new File(filePath);
      if(file.length()==0) return;
      fis = new FileInputStream(file);
      byte bytes[] = new byte[1024];
      int c;
      while((c=fis.read(bytes))!=-1)
        os.write(bytes,0,c);
      if(fis!=null) fis.close();
      if(os!=null) os.close();
    }catch (IOException ex) {
      JOptionPane.showMessageDialog(this,"上传文件失败！ "+fileName);
      ex.printStackTrace();
      return;
    }finally{
      try{
        if (fis != null) fis.close();
        if (os != null) os.close();
      }catch(Exception exc){
        exc.printStackTrace();
      }
    }
  }