本文实例讲述了Python使用ftplib实现简易FTP客户端的方法。分享给大家供大家参考。具体实现方法如下:
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#!/usr/bin/python
#-*- coding:utf-8 -*-
from ftplib import FTP #加载ftp模块
ftp = FTP() #设置变量
ftp.set_debuglevel( 2 ) #打开调试级别2,显示详细信息
ftp.connect( "IP" , "port" ) #连接的ftp sever和端口
ftp.login( "user" , "password" ) #连接的用户名,密码
print ftp.getwelcome() #打印出欢迎信息
ftp.cmd( "xxx/xxx" ) #更改远程目录
bufsize = 1024 #设置的缓冲区大小
filename = "filename.txt" #需要下载的文件
file_handle = open (filename, "wb" ).write
#以写模式在本地打开文件
ftp.retrbinaly( "RETR filename.txt" ,file_handle,bufsize)
#接收服务器上文件并写入本地文件
ftp.set_debuglevel( 0 ) #关闭调试模式
ftp.quit #退出ftp
ftp. dir () #显示目录下文件信息
ftp.mkd(pathname) #新建远程目录
ftp.pwd() #返回当前所在位置
ftp.rmd(dirname) #删除远程目录
ftp.delete(filename) #删除远程文件
ftp.rename(fromname, toname) #将fromname修改名称为toname。
ftp.storbinaly( "STOR filename.txt" ,file_handel,bufsize) #上传目标文件
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一个FTP完整实例:
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#coding:utf-8
from ctypes import *
import os
import sys
import ftplib
class myFtp:
ftp = ftplib.FTP()
bIsDir = False
path = ""
def __init__( self , host, port = '21' ):
self .ftp.set_debuglevel( 2 ) #打开调试级别2,显示详细信息
#self.ftp.set_pasv(0) #0主动模式 1 #被动模式
self .ftp.connect( host, port )
def Login( self , user, passwd ):
self .ftp.login( user, passwd )
print self .ftp.welcome
def DownLoadFile( self , LocalFile, RemoteFile ):
file_handler = open ( LocalFile, 'wb' )
self .ftp.retrbinary( "RETR %s" % ( RemoteFile ), file_handler.write )
file_handler.close()
return True
def UpLoadFile( self , LocalFile, RemoteFile ):
if os.path.isfile( LocalFile ) = = False :
return False
file_handler = open ( LocalFile, "rb" )
self .ftp.storbinary( 'STOR %s' % RemoteFile, file_handler, 4096 )
file_handler.close()
return True
def UpLoadFileTree( self , LocalDir, RemoteDir ):
if os.path.isdir( LocalDir ) = = False :
return False
LocalNames = os.listdir( LocalDir )
print RemoteDir
self .ftp.cwd( RemoteDir )
for Local in LocalNames:
src = os.path.join( LocalDir, Local)
if os.path.isdir( src ):
self .UpLoadFileTree( src, Local )
else :
self .UpLoadFile( src, Local )
self .ftp.cwd( ".." )
return
def DownLoadFileTree( self , LocalDir, RemoteDir ):
if os.path.isdir( LocalDir ) = = False :
os.makedirs( LocalDir )
self .ftp.cwd( RemoteDir )
RemoteNames = self .ftp.nlst()
for file in RemoteNames:
Local = os.path.join( LocalDir, file )
if self .isDir( file ):
self .DownLoadFileTree( Local, file )
else :
self .DownLoadFile( Local, file )
self .ftp.cwd( ".." )
return
def show( self , list ):
result = list .lower().split( " " )
if self .path in result and "<dir>" in result:
self .bIsDir = True
def isDir( self , path ):
self .bIsDir = False
self .path = path
#this ues callback function ,that will change bIsDir value
self .ftp.retrlines( 'LIST' , self .show )
return self .bIsDir
def close( self ):
self .ftp.quit()
ftp = myFtp( '********' )
ftp.Login( '*****' , '*****' )
#ftp.DownLoadFile('TEST.TXT', 'others\\runtime.log')#ok
#ftp.UpLoadFile('runtime.log', 'others\\runtime.log')#ok
#ftp.DownLoadFileTree('bcd', 'others\\abc')#ok
#ftp.UpLoadFileTree('aaa',"others\\" )
ftp.close()
print "ok!"
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希望本文所述对大家的Python程序设计有所帮助。