连接FTP服务器取回某个目录下的数据.

#-*-coding:utf8 -*-
#!/usr/bin/env python
from ftplib import FTP
import time
import os
import logging
import logging.handlers
class Log():
    def __init__(self):
        pass
    ''' 记录日志到文件 '''
    def logger(self,logfile):
        logger = logging.getLogger()
        #handler = logging.FileHandler(logfile) #记录日志到单个文件
        #rhandler = logging.handlers.RotatingFileHandler(filename=logfile,mode='a',maxBytes=1024*1024*1,backupCount=10) #记录日志到文件
        thandler = logging.handlers.TimedRotatingFileHandler(filename=logfile,when='D',interval=1,backupCount=10)#保留十天的日志
        formatter = logging.Formatter('[%(levelname)s] \t  %(asctime)s %(filename)s %(filename)s  %(message)s')
        thandler.setFormatter(formatter)
        logger.addHandler(thandler)
        logger.setLevel(logging.NOTSET)
        return logger

log = Log()
logger = log.logger("c://log/temp.log")
logger.info("Start Log log")

class HandleFtp():
    def __init__(self):
        pass
    ''' check network status result==1 : network is not ok result==0: network is ok '''
    def checkNetwork(self,netaddress):
        #处理  Packets: Sent = 4, Received = 2, Lost = 2 (50% loss), 状况
        time.sleep(2)
        result = os.system('ping '+netaddress)
        return result
    def login(self,ip,port,loginame,passwd,dir):
        ftp=FTP()
        #ftp.set_debuglevel(2) #打开调试级别2，显示详细信息
        logger.info("+++++++++++++++++++ Ftp Server Info +++++++++++++++++")
        logger.info(" ftp server's ip "+ip)
        logger.info(" ftp server's port "+str(port))
        logger.info(" ftp server's loginame "+loginame);
        logger.info(" ftp server's passwd "+passwd)
        logger.info(" ftp server's dir "+dir)
        logger.info("+++++++++++++++++++ Ftp Server Info +++++++++++++++++")
        ftp.connect(ip,port) #连接
        ftp.login(loginame,passwd) #登录，如果匿名登录则用空串代替即可
        #print ftp.getwelcome() #显示ftp服务器欢迎信息
        ftp.cwd(dir) #选择操作目录
        self.bufsize = 1024 #设置缓冲块大小
        return ftp
    def handleData(self,ftp,ftpaddress,port,loginame,passwd,dir):
         while(True):
            if self.checkNetwork(ftpaddress) == 1:
                logger.error("network happens errors ftpaddress "+ftpaddress)
                time.sleep(10 * 1)
            else:
                print "++++++++++++++++++++++++++++++++"
                print ftp
                try:
                    filelist = ftp.nlst()
                except Exception:
                    pass
                finally:
                    ftp = self.login(ftpaddress, port,loginame, passwd, dir)
              
                print ftp.nlst()
                for file in filelist:
                    filename=file
                    filename1 = "c:\\temp\\"+filename
                    print filename
                    print filename1
                    try:
                        file_handler = open(filename1,'wb') #以写模式在本地打开文件
                    except Exception:
                        logger.exception(" open file "+filename1+" hanppen exception"+Exception)
                    try:   
                        ftp.retrbinary('RETR '+filename,file_handler.write,self.bufsize) #接收服务器上文件并写入本地文件
                    except Exception:
                        logger.exception(" get data "+filename+" happen exception "+Exception)
                    filename1 = ""
                    filename = ""
                    try:
                        file_handler.close()
                    except Exception:
                        logger.exception("close file "+filename+" happen exception "+Exception )
                time.sleep(10);
    def quit(self,ftp):
        ftp.quit() #退出ftp服务器 
#ftp.set_debuglevel(0) #关闭调试

if __name__ == "__main__":
    ftp = HandleFtp()
    ftpl = ftp.login('10.232.75.46', 21,'anonymous', '', '/')
    ftp.handleData(ftpl,'10.232.75.46', 21,'anonymous', '', '/')