Python--paramiko库:连接远程服务器操作文件

import paramiko
from loggingutils.mylogger import logger as log

class SSHConnection(object):
    def __init__(self, host, port, username, password):
        self._host = host
        self._port = port
        self._username = username
        self._password = password
        self._transport = None
        self._sftp = None
        self._client = None
        self._connect()

    def _connect(self):
        transport = paramiko.Transport((self._host, self._port))
        transport.connect(username=self._username, password=self._password)
        self._transport = transport

    # 下载
    def download(self, remotepath, localpath):
        if self._sftp is None:
            self._sftp = paramiko.SFTPClient.from_transport(self._transport)
        self._sftp.get(remotepath, localpath)

    # 上传
    def put(self, localpath, remotepath):
        if self._sftp is None:
            self._sftp = paramiko.SFTPClient.from_transport(self._transport)
        self._sftp.put(localpath, remotepath)

    # 执行命令
    def exec_command(self, command):
        if self._client is None:
            self._client = paramiko.SSHClient()
            self._client._transport = self._transport
        stdin, stdout, stderr = self._client.exec_command(command)
        data = stdout.read()
        if len(data) > 0:
            log.info(data.decode('utf-8'))
            return data.decode('utf-8')
        err = stderr.read()
        if len(err) > 0:
            log.error(err.decode('utf-8'))
            return err

    def close(self):
        if self._transport:
            self._transport.close()
        if self._client:
            self._client.close()

if __name__ == "__main__":
    hostname = 'xxxxxxxxxxxx'
    port = 22
    username = 'xxxxx'
    password = 'xxxxxxxx'
    command = 'ls'
    conn = SSHConnection(hostname, port, username, password)
    localpath = 'E:/1.log'
    remotepath = '/logs/laravel.log'
    print('-----------downlaod start--------------')
    conn.download(remotepath, localpath)
    print('-----------download end----------------')
    print('-----------put begin-------------------')
    conn.put(localpath, remotepath)
    print('-----------put end---------------------')
    conn.exec_command(command)
    print('--------------------------------')
    conn.exec_command('pwd')
    print('--------------------------------')
    conn.exec_command('ls -l')
    conn.close()