python ftp
# !/usr/bin/env python# coding:utf-8
from ftplib import FTP
import os, sys, string, datetime, time
import socket
class MYFTP:
def __init__(self, hostaddr, username, password, remotedir, port=21):
self.hostaddr = hostaddr
self.username = username
self.password = password
self.remotedir = remotedir
self.port = port
self.ftp = FTP()
self.file_list = []
# self.ftp.set_debuglevel(2)
def __del__(self):
self.ftp.close()
# self.ftp.set_debuglevel(0)
def login(self):
ftp = self.ftp
try:
timeout = 60
socket.setdefaulttimeout(timeout)
ftp.set_pasv(True)
print '开始连接到 %s' % (self.hostaddr)
ftp.connect(self.hostaddr, self.port)
print '成功连接到 %s' % (self.hostaddr)
print '开始登录到 %s' % (self.hostaddr)
ftp.login(self.username, self.password)
print '成功登录到 %s' % (self.hostaddr)
debug_print(ftp.getwelcome())
except Exception:
deal_error("连接或登录失败")
try:
print "now:",self.ftp.pwd()
self.ftp.cwd(self.remotedir)
except(Exception):
deal_error('切换目录失败')
def is_same_size(self, localfile, remotefile):
try:
remotefile_size = self.ftp.size(remotefile)
except:
remotefile_size = -1
try:
localfile_size = os.path.getsize(localfile)
except:
localfile_size = -1
debug_print('lo:%dre:%d' % (localfile_size, remotefile_size), )
if remotefile_size == localfile_size:
return 1
else:
return 0
def download_file(self, localfile, remotefile):
if self.is_same_size(localfile, remotefile):
debug_print('%s 文件大小相同，无需下载' % localfile)
return
else:
print "remotefile:",remotefile
debug_print('>>>>>>>>>>>>下载文件 %s ... ...' % localfile)
# return
file_handler = open(localfile, 'wb')
self.ftp.retrbinary('RETR %s' % (remotefile), file_handler.write)
file_handler.close()
def download_files(self, localdir='./', remotedir='./'):
try:
print "remotedir:",remotedir
self.ftp.cwd(remotedir)
except:
debug_print('目录%s不存在，继续...' % remotedir)
return
if not os.path.isdir(localdir):
# pass
os.makedirs(localdir)
debug_print('切换至目录 %s' % self.ftp.pwd())
self.file_list = []
print(self.ftp.dir())
self.ftp.dir(self.get_file_list)
remotenames = self.file_list
# print(remotenames)
# return
for item in remotenames:
filetype = item
filename = item
print "filename:",filename
local = os.path.join(localdir, filename).replace('\\', '/')
if filetype == 'd':
self.download_files(local, filename)
elif filetype == '-':
self.download_file(local, filename)
self.ftp.cwd('..')
debug_print('返回上层目录 %s' % self.ftp.pwd())
def upload_file(self, localfile, remotefile):
if not os.path.isfile(localfile):
return
if self.is_same_size(localfile, remotefile):
debug_print('跳过[相等]: %s' % localfile)
return
file_handler = open(localfile, 'rb')
self.ftp.storbinary('STOR %s' % remotefile, file_handler)
file_handler.close()
debug_print('已传送: %s' % localfile)
def upload_files(self, localdir='./', remotedir='./'):
if not os.path.isdir(localdir):
return
localnames = os.listdir(localdir)
self.ftp.cwd(remotedir)
for item in localnames:
src = os.path.join(localdir, item)
if os.path.isdir(src):
try:
self.ftp.mkd(item)
except:
debug_print('目录已存在 %s' % item)
self.upload_files(src, item)
else:
self.upload_file(src, item)
self.ftp.cwd('..')
def get_file_list(self, line):
print "line1:", line
ret_arr = []
file_arr = self.get_filename(line)
print "file_arr:",file_arr
if file_arr not in ['.', '..']:
self.file_list.append(file_arr)
def get_filename(self, line):
print "line2:",line
print type(line)
pos = line.rfind(':')
while (line != ' '):
pos += 1
while (line == ' '):
pos += 1
print pos
file_arr = , line]
return file_arr
def debug_print(s):
print (s)
def deal_error(e):
timenow = time.localtime()
datenow = time.strftime('%Y-%m-%d', timenow)
logstr = '%s 发生错误: %s' % (datenow, e)
debug_print(logstr)
file.write(logstr)
sys.exit()
if __name__ == '__main__':
file = open("log.txt", "a")
timenow = time.localtime()
datenow = time.strftime('%Y-%m-%d', timenow)
logstr = datenow
# 配置如下变量
hostaddr = '192.168.1.100'# ftp地址
username = 'ftpuser3'# 用户名
password = 'test1passwd'# 密码
port = 21# 端口号
#rootdir_local = '.' + os.sep + 'bak/'# 本地目录
rootdir_local = 'D:/ftp/'
rootdir_remote = './'# 远程目录
f = MYFTP(hostaddr, username, password, rootdir_remote, port)
f.login()
f.download_files(rootdir_local, rootdir_remote)
timenow = time.localtime()
datenow = time.strftime('%Y-%m-%d', timenow)
logstr += " - %s 成功执行了备份\n" % datenow
debug_print(logstr)
file.write(logstr)
file.close()
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