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注：代碼中的變量命名規(guī)則采用的是“駝峰式”命名法，這可能帶來代碼檢查提示，在PyCharm中可以Alt + Enter忽略此類檢查

1、配置文件 ftp_config.py

# FTP服務(wù)器的IP、端口、賬戶、密碼

host = "172.16.53.113"

port = 21  # not str

username = "admin"

password = "123456"

# remote和local是相對客戶端的

homeDir = "D:/FTP/"

localDir = "E:/FTP/"

2、主要代碼 ftp_client.py

# !/usr/bin/python3

# coding: utf-8

from config import ftp_config

import ftplib

import os

# 獲取連接

def getConnect(host, port, username, password):

    """

    :param host: FTP ip

    :param port: FTP port

    :param username: FTP userName

    :param password: FTP password

    :return: ftp

    """

    print("FTP connection...")

    result = [1, ""]

    try:

        ftp = ftplib.FTP()

        # ftp.set_debuglevel(2)

        ftp.connect(host, port)

        ftp.login(username, password)

        result = [1, "connection success", ftp]

    except Exception as e:

        result = [-1, "connection fail, reason:{0}".format(e)]

    return result

# 下載

def download(ftp, remotePath, localAbsDir):

    """

    :param ftp:

    :param remotePath: 服務(wù)端文件或文件夾的絕對或相對路徑

    :param localAbsDir: 客戶端文件夾的絕對路徑，如E:/FTP/downDir/

    :return:

    """

    result = [1, ""]

    try:

        remotePath = formatPath(remotePath)

        localAbsDir = formatPath(localAbsDir)

        remoteRel = ""

        if remotePath == "":

            remotePath = ftp_config.homeDir

        else:

            if remotePath.startswith(ftp_config.homeDir):

                remoteRel = remotePath.replace(ftp_config.homeDir, "/")

                remoteRel = formatPath(remoteRel)

            else:

                remoteRel = remotePath

        if localAbsDir == "":

            localAbsDir = ftp_config.localDir

            localAbsDir = formatPath(localAbsDir)

        remoteAbs = formatPath(ftp_config.homeDir, remoteRel)  # 服務(wù)端文件或文件夾的絕對路徑

        if os.path.isdir(remoteAbs):

            rs = downloadDir(ftp, remoteRel, localAbsDir)

        else:

            rs = downloadFile(ftp, remoteRel, localAbsDir)

        if rs[0] == -1:

            result[0] = -1

        result[1] = result[1] + "\n" + rs[1]

    except Exception as e:

        result = [-1, "download fail, reason:{0}".format(e)]

    return result

# 下載指定文件夾下的所有

def downloadDir(ftp, remoteRelDir, localAbsDir):

    """

    :param ftp:

    :param remoteRelDir: 服務(wù)端文件的相對路徑,含文件后綴，如/srcDir/

    :param localAbsDir: 客戶端文件夾的絕對路徑，如E:/FTP/downDir/

    :return:

    """

    print("start download dir by use FTP...")

    result = [1, ""]

    try:

        remoteRelDir = formatPath(remoteRelDir)

        localAbsDir = formatPath(localAbsDir)

        files = []  # 文件

        dirs = []  # 文件夾

        remotePaths = ftp.nlst(remoteRelDir)

        if len(remotePaths) > 0:

            for remotePath in remotePaths:

                remotePath = formatPath(remotePath)

                if isDir(ftp, remotePath):

                    dirs.append(remotePath)

                else:

                    files.append(remotePath)

        ftp.cwd("")  # 切回homeDir

        if len(files) > 0:

            for rrp in files:  # rrp is relPath

                rs = downloadFile(ftp, rrp, localAbsDir)

                if rs[0] == -1:

                    result[0] = -1

                result[1] = result[1] + "\n" + rs[1]

        if len(dirs) > 0:

            for rrd in dirs:  # rrd is relDir

                dirName = lastDir(rrd)

                localAbsDir = formatPath(localAbsDir, dirName)

                rs = downloadDir(ftp, rrd, localAbsDir)

                if rs[0] == -1:

                    result[0] = -1

                result[1] = result[1] + "\n" + rs[1]

    except Exception as e:

        result = [-1, "download fail, reason:{0}".format(e)]

    return result

# 下載指定文件

def downloadFile(ftp, remoteRelPath, localAbsDir):

    """

    :param ftp:

    :param remoteRelPath: 服務(wù)端文件的相對路徑,含文件后綴，如/srcDir/file.txt

    :param localAbsDir: 客戶端文件夾的絕對路徑，如E:/FTP/downDir/

    :return:

    """

    print("start download file by use FTP...")

    result = [1, ""]

    try:

        fileName = os.path.basename(remoteRelPath)  # 文件名

        localAbsPath = formatPath(localAbsDir, fileName)

        splitPaths = os.path.split(localAbsPath)

        lad = splitPaths[0]

        lad = formatPath(lad)

        if not os.path.exists(lad):

            os.makedirs(lad)

        handle = open(localAbsPath, "wb")

        ftp.retrbinary("RETR %s" % remoteRelPath, handle.write, 1024)

        handle.close()

        result = [1, "download " + splitPaths[1] + " success"]

    except Exception as e:

        result = [-1, "download fail, reason:{0}".format(e)]

    return result

# 上傳

def upload(ftp, remoteRelDir, localPath):

    """

    :param ftp:

    :param remoteRelDir: 服務(wù)端文件夾相對路徑，可以為None、""，此時文件上傳到homeDir

    :param localPath: 客戶端文件或文件夾路徑，當(dāng)路徑以localDir開始，文件保存到homeDir的相對路徑下

    :return:

    """

    result = [1, ""]

    try:

        remoteRelDir = formatPath(remoteRelDir)

        localPath = formatPath(localPath)

        localRelDir = ""

        if localPath == "":

            localPath = ftp_config.localDir

            localPath = formatPath(localPath)

        else:

            if localPath.startswith(ftp_config.localDir):  # 絕對路徑

                localRelDir = localPath.replace(ftp_config.localDir, "/")

                localRelDir = formatPath(localRelDir)

            else:  # 相對(localDir)路徑

                localPath = formatPath(ftp_config.localDir, localPath)

        if remoteRelDir == "":

            remoteRelDir = formatPath("/uploadFiles/", localRelDir)

        else:

            if remoteRelDir.startswith(ftp_config.homeDir):

                remoteRelDir = remoteRelDir.replace(ftp_config.homeDir, "/")

                remoteRelDir = formatPath(remoteRelDir)

        if os.path.isdir(localPath):  # isDir

            rs = uploadDir(ftp, remoteRelDir, localPath)

        else:  # isFile

            rs = uploadFile(ftp, remoteRelDir, localPath)

        if rs[0] == -1:

            result[0] = -1

        result[1] = result[1] + "\n" + rs[1]

    except Exception as e:

        result = [-1, "upload fail, reason:{0}".format(e)]

    return result

# 上傳指定文件夾下的所有

def uploadDir(ftp, remoteRelDir, localAbsDir):

    """

    :param ftp:

    :param remoteRelDir: 服務(wù)端文件夾相對路徑，可以為None、""，此時文件上傳到homeDir

    :param localAbsDir: 客戶端文件夾路徑，當(dāng)路徑以localDir開始，文件保存到homeDir的相對路徑下

    :return:

    """

    print("start upload dir by use FTP...")

    result = [1, ""]

    try:

        for root, dirs, files in os.walk(localAbsDir):

            if len(files) > 0:

                for fileName in files:

                    localAbsPath = localAbsDir + fileName

                    rs = uploadFile(ftp, remoteRelDir, localAbsPath)

                    if rs[0] == -1:

                        result[0] = -1

                    result[1] = result[1] + "\n" + rs[1]

            if len(dirs) > 0:

                for dirName in dirs:

                    rrd = formatPath(remoteRelDir, dirName)

                    lad = formatPath(localAbsDir, dirName)

                    rs = uploadDir(ftp, rrd, lad)

                    if rs[0] == -1:

                        result[0] = -1

                    result[1] = result[1] + "\n" + rs[1]

            break

    except Exception as e:

        result = [-1, "upload fail, reason:{0}".format(e)]

    return result

# 上傳指定文件

def uploadFile(ftp, remoteRelDir, localAbsPath):

    """

    :param ftp:

    :param remoteRelDir: 服務(wù)端文件夾相對路徑，可以為None、""，此時文件上傳到homeDir

    :param localAbsPath: 客戶端文件路徑，當(dāng)路徑以localDir開始，文件保存到homeDir的相對路徑下

    :return:

    """

    print("start upload file by use FTP...")

    result = [1, ""]

    try:

        try:

            ftp.cwd(remoteRelDir)

        except ftplib.error_perm:

            try:

                ftp.mkd(remoteRelDir)

            except ftplib.error_perm:

                print("U have no authority to make dir")

        fileName = os.path.basename(localAbsPath)

        remoteRelPath = formatPath(remoteRelDir, fileName)

        handle = open(localAbsPath, "rb")

        ftp.storbinary("STOR %s" % remoteRelPath, handle, 1024)

        handle.close()

        result = [1, "upload " + fileName + " success"]

    except Exception as e:

        result = [-1, "upload fail, reason:{0}".format(e)]

    return result

# 判斷remote path isDir or isFile

def isDir(ftp, path):

    try:

        ftp.cwd(path)

        ftp.cwd("..")

        return True

    except:

        return False

# return last dir'name in the path, like os.path.basename

def lastDir(path):

    path = formatPath(path)

    paths = path.split("/")

    if len(paths) >= 2:

        return paths[-2]

    else:

        return ""

# 格式化路徑或拼接路徑并格式化

def formatPath(path, *paths):

    """

    :param path: 路徑1

    :param paths: 路徑2-n

    :return:

    """

    if path is None or path == "." or path == "/" or path == "//":

        path = ""

    if len(paths) > 0:

        for pi in paths:

            if pi == "" or pi == ".":

                continue

            path = path + "/" + pi

    if path == "":

        return path

    while path.find("\\") >= 0:

        path = path.replace("\\", "/")

    while path.find("//") >= 0:

        path = path.replace("//", "/")

    if path.find(":/") > 0:  # 含磁盤符 NOT EQ ZERO, OS.PATH.ISABS NOT WORK

        if path.startswith("/"):

            path = path[1:]

    else:

        if not path.startswith("/"):

            path = "/" + path

    if os.path.isdir(path):  # remote path is not work

        if not path.endswith("/"):

            path = path + "/"

    elif os.path.isfile(path):  # remote path is not work

        if path.endswith("/"):

            path = path[:-1]

    elif path.find(".") < 0:  # maybe it is a dir

        if not path.endswith("/"):

            path = path + "/"

    else:  # maybe it is a file

        if path.endswith("/"):

            path = path[:-1]

    # print("new path is " + path)

    return path

3、測試 main.py

# !/usr/bin/python3

# coding: utf-8

from config import ftp_config

from clients import ftp_client

import sys

def runFTP(remotePath, localPath):

    result = ftp_client.getConnect(

        host=ftp_config.host,

        port=ftp_config.port,

        username=ftp_config.username,

        password=ftp_config.password

    )

    if result[0] != 1:

        print(result[1])

        sys.exit()

    else:

        print("connection success")

    ftp = result[2]

    result = ftp_client.download(

        ftp=ftp,

        remotePath=remotePath,

        localAbsDir=localPath

    )

    # result = ftp_client.upload(

    #     ftp=ftp,

    #     remoteRelDir=remotePath,

    #     localPath=localPath

    # )

    # ftp.quit()

    print("全部成功" if result[0] == 1 else "部分失敗")

    print(result[1])

    sys.exit()

def main():

    remotePath = input("輸入 服務(wù)端文件或文件夾的相對路徑：")

    localPath = input("輸入 客戶端文件夾的絕對路徑：")

    runFTP(remotePath, localPath)

控制臺：

輸入 服務(wù)端文件或文件夾的相對路徑：/dir1/

輸入 客戶端文件夾的絕對路徑：E:/FTP/downDir/

FTP connection...

connection success

start download dir by use FTP...

start download file by use FTP...

start download file by use FTP...

start download file by use FTP...

start download dir by use FTP...

start download file by use FTP...

start download file by use FTP...

start download file by use FTP...

全部成功

download dir1_file1.txt success

download dir1_file2.txt success

download dir1_file3.txt success

download dir2_file1.txt success

download dir2_file2.txt success

download dir2_file3.txt success

執(zhí)行前：

執(zhí)行后：

--------------------- 

作者：maozexijr 

來源：CSDN 

原文：https://blog.csdn.net/MAOZEXIJR/article/details/78967806 

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