※ 引述《[email protected] (夏杰)》之铭言： > 有没有人会用java写client端的ftp小程式 > 要能上下传档案及list目录 先学会传指令，再学会抓档。 RFC 959 里说了，ftp 是以 telnet 为基础的。 所以你可以先找个 ftp 用 telnet 去用看看 ================================================= [slayer@rat slayer]$ telnet ftp.debian.org 21 Trying 128.101.240.212... Connected to ftp.debian.org. Escape character is '^]'. 220 saens.debian.org FTP server (vsftpd) USER xd 530 This FTP server is anonymous only. USER anonymous 331 Please specify the password. PASS xd 230- 230-This site is just another one in a worldwide array of Debian mirrors. 230-It is not the "primary Debian FTP site" -- it is merely an official 230-mirror that is in the United States of America. 230- 230-If you are connecting from outside the USA, please consider using another 230-official Debian mirror, one that is closer to you. This will likely help 230-you by speeding up your downloads, and it will help us by lessening the 230-load on this machine. 230- 230-Current list of Debian mirrors is at http://www.debian.org/mirror/list 230- 230 Login successful. ================================================================= 以上完成了使用者登入，黄字部分是俺自己KEY的。 接着您试着打列出目录 ================================================================= LIST 425 Use PORT or PASV first. ================================================================= 这 Server 还真好心，提醒我们没有指定 PORT 或是宣告 PASV 至少这二者的差别是您的功课了。 俺先以 PASV 为示范 ================================================================= PASV 227 Entering Passive Mode (128,101,240,212,155,72) ================================================================= Server端给了你一组IP,PORT 让你另外可以另外开始连线下载LIST的结果 128,101,240,212 是IP 155,72 是 port。 <---> 怎麽换算也是您的作业 :P 您可以写一个小程式开 Socket 去接 LIST 的结果 另外档案下载也就是一样了 BTW. 请您阅读 RFC959 或相关讨论和弄明白什麽是 PI, DTP 大致上 FTP 就能写出来又有概念噜。实作这个是很有趣滴 -- ※ Origin: SayYA 资讯站 <bbs.sayya.org> ◆ From: 218-161-121-243.dynamic.hinet.net