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对于Python2.7来说，内置的FTP_TLS类并不支持Implicit FTP Over TLS加密方式的FTP Server操作，为支持Implicit FTP Over TLS加密方式，必须重载内置的FTP_TLS类，具体代码如下：
import ftplib class FTP_TLS(ftplib.FTP_TLS): def __init__(self, host=‘‘, user=‘‘, passwd=‘‘, acct=‘‘, keyfile=None, certfile=None, timeout=180): ftplib.FTP_TLS.__init__(self, host, user, passwd, acct, keyfile, certfile, timeout) def connect(self, host=‘‘, port=0, timeout=-999): if host != ‘‘: self.host = host if port > 0: self.port = port if timeout != -999: self.timeout = timeout try: self.sock = socket.create_connection((self.host, self.port), self.timeout) self.af = self.sock.family self.sock = ssl.wrap_socket(self.sock, self.keyfile, self.certfile, ssl_version=ssl.PROTOCOL_TLSv1) self.file = self.sock.makefile(‘rb‘) self.welcome = self.getresp() except Exception as e: print e return self.welcome def download(self, remote_file_name, local_file_name): with open(local_file_name, ‘wb‘) as fp: self.retrbinary(‘RETR %s‘ % remote_file_name, fp.write)
下载的示例代码如下所示：
host = ‘XXX‘ port = 2222 user = ‘user‘ password = ‘pass‘ local_dir = ‘./data‘ ftp = FTP_TLS() ftp.connect(host, port) LOG.debug(‘begin to login‘) ftp.login(user, password) LOG.debug(‘login succeed‘) LOG.debug(‘welcome info = %s‘, ftp.getwelcome()) ftp.prot_p() ftp.cwd(‘/crexbatch‘) ftp.download(‘People.zip‘, ‘People.zip‘) ftp.retrlines(‘LIST‘) fnames = ftp.nlst() open(‘crexbatch.txt‘, ‘wb‘).write(‘\r\n‘.join(fnames))
重载Python FTP_TLS 实现Implicit FTP Over TLS方式下载文件
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原文地址：http://www.cnblogs.com/Jerryshome/p/4801066.html
