SFTP(Secure File Transfer Protocol)是一种基于SSH(Secure Shell)协议的安全文件传输协议。它允许用户在客户端和服务器之间安全地传输文件,提供加密的数据传输和身份验证机制。
SFTP服务器通常分为两种类型:
假设我们需要从SFTP服务器获取最新的多个文件,可以使用Python的paramiko
库来实现。以下是一个示例代码:
import paramiko
from stat import S_ISREG
def get_latest_files(sftp, path, num_files):
files = sftp.listdir_attr(path)
files.sort(key=lambda x: x.st_mtime, reverse=True)
latest_files = []
for file in files:
if S_ISREG(file.st_mode):
latest_files.append(file.filename)
if len(latest_files) >= num_files:
break
return latest_files
def download_files(sftp, local_path, remote_path, files):
for file in files:
sftp.get(f"{remote_path}/{file}", f"{local_path}/{file}")
def main():
hostname = 'your_sftp_server'
port = 22
username = 'your_username'
password = 'your_password'
remote_path = '/path/to/remote/directory'
local_path = '/path/to/local/directory'
num_files = 5
transport = paramiko.Transport((hostname, port))
transport.connect(username=username, password=password)
sftp = paramiko.SFTPClient.from_transport(transport)
latest_files = get_latest_files(sftp, remote_path, num_files)
download_files(sftp, local_path, remote_path, latest_files)
sftp.close()
transport.close()
if __name__ == "__main__":
main()
通过以上步骤和代码示例,你应该能够从SFTP服务器获取多个最新文件,并解决常见的连接和权限问题。
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