Java实现的一个FTP客户端

ftp客户端：（指令示例） 1、登陆ftp：ftp url username password port 2、关闭ftp：ftp close 3、上传文件：put localpath remotepath 4、下载文件：get localpath remotepath 5、删除文件：deletefile path 6、删除文件夹：deletefolder path 7、创建文件夹：mkdir path ftp 10.211.55.5 private private 21 ftp close get /Users/EdwinCheng/Desktop/1234.txt teee.txt put /Users/EdwinCheng/Desktop/upload1.txt upload/2.txt deletefile upload/1.txt deletefolder a/q/e mkdir /a/q/e