ftp上传文件下载文件工具类

ftp上传文件下载文件工具类：

调用：

public static void main(String[] args) {try {  FileInputStream in = new FileInputStream(new File("D:\\demo\\image\\a.jpg"));  boolean flag = uploadFile("127.0.0.1", 21, "username", "password", "/home/demo/aaa/images","/2017/03/16", "a.jpg", in);  System.out.println(flag);  } catch (FileNotFoundException e) {  e.printStackTrace();  }  }