python ftplib模块制作ftp客户端详解编程语言

#!/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 
 

一个FTP完整实例

#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!"