python简介FTP模块

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Python中的ftplib模块



Python中默认安装的ftplib模块定义了FTP类，其中函数有限，可用来实现简单的ftp客户端，用于上传或下载文件



FTP的工作流程及基本操作可参考协议RFC959



ftp登陆连接



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相关命令操作

ftp.cwd(pathname) #设置FTP当前操作的路径

ftp.dir() #显示目录下文件信息

ftp.nlst() #获取目录下的文件

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
　　ftp.retrbinary("RETR filename.txt",file_handel,bufsize)#下载FTP文件
　　from ctypes import *
import os
import sys
import ftplib
class KANFtp:
ftp = ftplib.FTP()
bIsDir = False
path = ""
def __init__(self, host):
self.ftp.connect( host )
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
print os.path
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 )
if self.ftp.dir(RemoteDir) == None:
self.ftp.mkd( 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:
#print Local, file
self.DownLoadFile( Local, file )
self.ftp.cwd( ".." )
return
def show( self, list  ):
result = list.lower().split( " " )
if self.path in result and "1" not in result:
self.bIsDir = True
return
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 dirSize(self, RemoteDir):
self.size = 0
self.ftp.cwd( RemoteDir )
RemoteNames = self.ftp.nlst()
for file in RemoteNames:
if self.isDir( file ):
continue              
else:
#print Local, file
self.size += self.ftp.size( file )
self.ftp.cwd( ".." )
return self.size
ftp = KANFtp('192.168.10.21')
ftp.Login('00000b0002','123456')
#ftp.DownLoadFile('SQLyog.dll', '/00000b0002/repos/SQLyog.dll')#ok
#ftp.UpLoadFile('SQLyog.dll', '/00000b0002/repos/SQLyog.dll')#ok
#ftp.DownLoadFileTree('python', '/00000b0002/repos/python')#ok
#ftp.UpLoadFileTree('sss',"/00000b0002/repos/sss" )
print ftp.dirSize('/00000b0002/repos/index.php')
print "ok!"