Ftp
FTP 伺服器上使用的帳戶欄位與使用者名相比是什麼
可能是一個愚蠢的問題,但是當連接到 FTP 伺服器時,有時會有一個帳戶選項。這與使用者名有什麼意義?
例如,從 Apache FTP 客戶端查看此方法:
/** * Login to the FTP server using the provided username, password, * and account. If no account is required by the server, only * the username and password, the account information is not used. * * @param username The username to login under. * @param password The password to use. * @param account The account to use. * @return True if successfully completed, false if not. * @throws FTPConnectionClosedException * If the FTP server prematurely closes the connection as a result * of the client being idle or some other reason causing the server * to send FTP reply code 421. This exception may be caught either * as an IOException or independently as itself. * @throws IOException If an I/O error occurs while either sending a * command to the server or receiving a reply from the server. */ public boolean login(final String username, final String password, final String account) throws IOException { .... }
“帳戶”很少用於某些特定係統,如果有的話。您將知道何時需要使用它。大多數情況下你沒有。這可能是一些遺留的東西。畢竟定義“帳戶”功能的 FTP RFC 959是從 1985 年開始的!
這是 FTP RFC 959 對
ACCT
(帳戶)命令的模糊表述:參數欄位是標識使用者帳戶的 Telnet 字元串。該命令不一定與 USER 命令相關,因為某些站點可能需要帳戶才能登錄,而其他站點可能僅需要特定訪問權限,例如儲存文件。在後一種情況下,命令可能隨時到達。