说明：   这个ftp客户端程序分为两个部分，均是j2se写成。Ftpls.java用于匿名登录ftp服务器，显示主目录。FtpTest.java用于上传下载单个flv视频文件，支持中文上传下载，可在命令行随机制定路径上传下载。
(The ftp client program is divided into two parts, which were written in j2se. Ftpls.java ftp server for anonymous login to show your home directory. FtpTest.java for uploading and downloading a single flv video file, support Chinese upload and download, can be random development path in the command line upload and download.)