FTPserver

客户端代码：

import os
import hashlib

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

FILE_PATH = os.path.join(BASE_DIR, 'donwload')

def make_md5_on_file(file_path):
    '''给文件制作md5  每次都要打开文件，要想办法保存到一个位置，当文件发生修改时更新这个md5'''
    m = hashlib.md5()
    with open(file_path, 'rb') as f:
        for line in f:
            bytes_str = line
            m.update(bytes_str)
        md5value = m.hexdigest()
        return md5value

import socket
import optparse
import json
import struct
import os
import sys
import shelve
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
from conf import settings

class FTPClient(object):
    address_family = socket.AF_INET
    socket_type = socket.SOCK_STREAM
    allow_reuse_address = True
    max_pack_size = 8192
    request_queue_size = 5
    coding = 'utf-8'
    donwload_dir = settings.FILE_PATH

    def __init__(self, connect=True):
        ''' elf.options 这是这个模块生成的一个字典 self.args  这是用户输入的命令。和sys.argv 差不多
            如果用户按照规则输入，那么相应的值 就会在字典中显示， 不按规则输入的值，就放倒了列表中'''
        parser = optparse.OptionParser()
        parser.add_option("-s", "--server", dest='server', help="ftp server ip_addr")
        parser.add_option("-P", "--port", type="int", dest="port", help="ftp server port")
        parser.add_option("-u", "--username", dest="username", help="username info")
        parser.add_option("-p", "--password", dest="password", help="password info")
        self.options, self.args = parser.parse_args()
        self.current_dir = None
        self.argv_verification()  # 判断合法性
        self.socket = self.make_connection()  # 建立连接
        self.shelve_obj = shelve.open('defect_file')  # 得到下载时shelve文件对象
        self.shelve_load_obj = shelve.open('unfinish_file')
        if connect:
            try:
                self.client_connect()
            except Exception:
                self.client_close()
                exit('以断开连接')

    def argv_verification(self):
        '''判断用户输入的合法性'''
        if not self.options.server or not self.options.port:
            exit('必须提供，ip 和 端口')

    def make_connection(self):
        '''由构造函数调用生成 socket 对象'''
        self.socket = socket.socket(self.address_family, self.socket_type)
        return self.socket

    def client_connect(self):
        '''由构造函数直接调用，激活客户端，连接服务端'''
        self.socket.connect((self.options.server, self.options.port))  #

    def client_close(self):
        '''由构造函数调用，关闭客户端'''
        self.socket.close()

    def auth(self):
        '''输入账户名，密码。服务端验证完成后，根据接收到的状态码，返回 Ture or False'''
        count = 0
        while count < 3:
            username = input('username:').strip()
            if not username: continue
            self.current_dir = '\\' + username
            pwd = input('password:').strip()
            cmd = {
                'action_type': 'auth',
                'username': username,
                'password': pwd
            }

            self.send_head(cmd)
            head_dic = self.recv_head()
            if head_dic['status_code'] == 200:

                return True
            else:
                count += 1
                print(head_dic['status_msg'])
                continue

    def send_head(self, cmd):
        '''发送客户端的报头，'''
        client_head_bytes = json.dumps(cmd).encode(self.coding)
        client_head_len = struct.pack('i', len(client_head_bytes))
        self.socket.send(client_head_len)
        self.socket.send(client_head_bytes)

    def recv_head(self):
        '''接收服务端发来的报头'''
        obj = self.socket.recv(4)
        header_size = struct.unpack('i', obj)[0]
        header_json = self.socket.recv(header_size).decode(self.coding)
        header_dict = json.loads(header_json)
        return header_dict

    def send_file(self, file_path, head_dic, sercver_dir, md5val, send_size=0):
        '''发送文件'''
        self.shelve_load_obj[file_path] = [head_dic, sercver_dir, md5val]
        genertor = self.progress_bar(head_dic['filesize'])
        genertor.__next__()
        with open(file_path, 'rb') as f:
            f.seek(send_size)
            for line in f:
                self.socket.send(line)
                send_size += len(line)
                genertor.send(send_size)
            else:
                del self.shelve_load_obj[file_path]
                print('数据发送成功')
        header_dict = self.recv_head()
        print(header_dict['status_msg'])

    def recv_file(self, file_path, file_size, md5_value, filename, recv_size=0):
        '''接收服务端文件数据, 并 保存所有文件信息, 防止程序中断时,可以进行续传,
        文件正常传完, 删除文件描述信息, 并改名'''
        file_abs_path = os.path.join(r'%s\%s' % (self.current_dir, filename))  # 拼接客户端在那个位置下载的文件
        self.shelve_obj[file_abs_path] = [file_size, filename+'.download']  # 以绝对路径为键，保存文件大小的值

        with open(file_path, 'ab') as f:
            while recv_size < file_size:
                line = self.socket.recv(self.max_pack_size)
                f.write(line)
                recv_size += len(line)
                progres(recv_size, file_size)  # 进度条
        md5value = settings.make_md5_on_file(file_path)
        if md5value == md5_value:
            del self.shelve_obj[file_abs_path]
            if filename not in os.listdir(self.donwload_dir):
                os.renames(file_path, os.path.join(self.donwload_dir, filename))
            else:
                print('文件重名,未覆盖!', end='')
            print()

    def put(self, *args):
        '''上传文件'''
        cmd = args[0]
        filename = args[1]
        sercver_dir = '%s\%s' % (self.current_dir, filename)
        if not os.path.isfile(os.path.join(self.donwload_dir, filename)):
            print('file %s 不在donwload文件中' % filename)
            return
        else:
            filesize = os.path.getsize(os.path.join(self.donwload_dir, filename))
            md5value = settings.make_md5_on_file(os.path.join(self.donwload_dir, filename))
            head_dic = {'action_type': cmd, 'filesize': filesize, 'filename': filename, 'md5value': md5value}
            file_path = os.path.join(self.donwload_dir, filename)
            self.send_head(head_dic)
            self.send_file(file_path, head_dic, sercver_dir, md5value)

    def re_put(self, file_path, load_head_dic, sercver_dir, md5value):
        server_head_dic = self.recv_head()
        received_size = server_head_dic['file_size']
        self.send_file(file_path, load_head_dic, sercver_dir, md5value, send_size=received_size)

    def progress_bar(self, total_size):
        '''生成器 方式的, 进度条展示'''
        current_percent = 0
        last_percent = 0
        while True:
            recvived_size = yield current_percent
            current_percent = int(recvived_size / total_size * 100)
            if current_percent > last_percent:
                print("#" * int(current_percent/2) + "{percent}%".format(percent=current_percent), flush=True, end='\r')
                last_percent = current_percent

    def get(self, *args):
        '''下载文件'''
        cmd = args[0]
        filename = args[1]
        client_head_dic = {'action_type': cmd, 'filename': filename}
        self.send_head(client_head_dic)
        server_head_dic = self.recv_head()

        if server_head_dic['status_code'] == 300:
            print(server_head_dic['status_msg'])
            return

        file_path = os.path.join(self.donwload_dir, '%s.download' % filename)  # 存放文件路径
        total_size = server_head_dic['filesize']  # 文件最大大小
        md5_val = server_head_dic['md5value']  # 得到服务端发来的 MD5 值
        self.recv_file(file_path, total_size, md5_val, filename)

    def re_get(self, head_dic):
        '''由程序自检之后，用户选择 是否进行续传。 如果续传 调用该方法。
        发送报头:
        1. 检测 已收到文件大小
        2. 编辑报头，使用 self.socket.send() 发送报头
        3. 接收文件，'''
        self.send_head(head_dic)
        server_head_dic = self.recv_head()
        if server_head_dic['status_code'] == 300:
            print(server_head_dic['status_msg'])
            return
        file_path = os.path.join(self.donwload_dir, head_dic['filename'])  # 存放文件路径
        total_size = head_dic['total_size']
        md5_val = server_head_dic['md5value']  # 得到服务端发来的 MD5 值
        self.recv_file(file_path, total_size, md5_val, server_head_dic['filename'], head_dic['received_file_size'])

    def ls(self, *args):
        '''显示当前目录下的文件'''
        cmd = args[0]
        client_head_dic = {'action_type': cmd}
        self.send_head(client_head_dic)
        server_head_dic = self.recv_head()
        if server_head_dic['status_code'] == 0:
            print(server_head_dic['dir_info'])
        if server_head_dic['status_code'] == 100:
            print(server_head_dic['dir_info'])

    def cd(self, *args):
        '''切换目录'''
        cmd = args[0]
        dirname = args[1]
        if dirname != '.':
            client_head_dic = {'action_type': cmd, 'dirname': dirname}
            self.send_head(client_head_dic)
            server_head_dic = self.recv_head()
            if server_head_dic['status_code'] == 400:
                print(server_head_dic['status_msg'])
            elif server_head_dic['status_code'] == 401:
                print(server_head_dic['status_msg'])
                self.current_dir = server_head_dic['dirn']
            elif server_head_dic['status_code'] == 0:
                self.current_dir = server_head_dic['dirn']
        else:
            print('输入错误')
            return

    def help_msg(self, *args):
        msg = '''command error!!!
        Correct format:
        get filename 下载文件
        put filename 上传文件
        ls  显示当前所在目录下的文件和子目录
        cd dirname 切换到那个目录下'''
        print(msg)

    def unfinished_file_check(self):
        if not self.shelve_obj:
            print('没有未接收的文件'.center(30, '-'))
            return
        for index, abs_file in enumerate(self.shelve_obj.keys()):
            self.received_file_size = os.path.getsize(os.path.join(self.donwload_dir, self.shelve_obj[abs_file][1]))
            print('文件编号 %d  服务器文件保存地址 %s  文件总大小%s  文件名%s  已收到文件大小%s' %
                  (index, abs_file, self.shelve_obj[abs_file][0], self.shelve_obj[abs_file][1], self.received_file_size))
        while True:
            choice = input('选择想要继续下载的文件编号 [back] 退出:').strip()
            if not choice: continue
            if choice == 'back': break
            if choice.isdigit():
                choice = int(choice)
                if choice >=0 and choice <= index:
                    selected_file = list(self.shelve_obj.keys())[choice]  # 通过索引,拿到想要的那个文件的 key
                    total_size = self.shelve_obj[selected_file][0]  # 文件总大小
                    file_name = self.shelve_obj[selected_file][1]  # 文件名
                    size = self.received_file_size  # 已收到的文件大小
                    head_dic = {'action_type': 're_get', 'abs_file': selected_file,  'total_size': total_size,
                                'received_file_size': size, 'filename': file_name}
                    self.re_get(head_dic)

    def unsend_by_file_check(self):
        if not self.shelve_load_obj:
            print('没有未上传完整的文件'.center(30, '-'))
            return
        for index, abs_file in enumerate(self.shelve_load_obj.keys()):
            print('%s %s %s' % (index, abs_file, self.shelve_load_obj[abs_file]))
        while True:
            choice = input('选择想要继续上传的文件编号 [back] 退出:').strip()
            if not choice: continue
            if choice == 'back': break
            if choice.isdigit():
                choice = int(choice)
                if choice >= 0 and choice <= index:
                    # file_path, head_dic, sercver_dir, md5val
                    file_path = list(self.shelve_load_obj.keys())[choice]
                    filesize = self.shelve_load_obj[file_path][0]['filesize']
                    load_head_dic = self.shelve_load_obj[file_path][0]
                    sercver_dir = self.shelve_load_obj[file_path][1].strip('\\')
                    md5value = self.shelve_load_obj[file_path][2]
                    head_dic = {'action_type': 're_put', 'abs_file': sercver_dir, 'md5value': md5value, 'filesize': filesize}
                    self.send_head(head_dic)
                    self.re_put(file_path, load_head_dic, sercver_dir, md5value)

    def interactive(self):  # 交互函数
        '''处理 与 服务端 的所有交互,解析用户输入的指令'''
        if self.auth():
            self.unfinished_file_check()
            self.unsend_by_file_check()
            while True:
                inp = input('[%s] Q退出：' % self.current_dir).strip()
                if not inp: continue
                cmds = inp.split()
                if inp != 'Q':
                    if hasattr(self, cmds[0]):
                        func = getattr(self, cmds[0])
                        func(*cmds)
                    else:
                        self.help_msg()
                        continue
                else:
                    self.shelve_obj.close()
                    self.client_close()
                    exit('谢谢使用')

    def make_dir(self, *args):
        '''在自己的目录下，创建文件夹'''
        print('在自己的目录下，创建文件夹')

def humanbytes(B):
    '''这传代码 抄来的  T_T '''
    B = float(B)
    KB = float(1024)
    MB = float(KB ** 2)  # 1,048,576
    GB = float(KB ** 3)  # 1,073,741,824
    TB = float(KB ** 4)  # 1,099,511,627,776

    if B < KB:
        return '{0} {1}'.format(B,'Bytes' if 0 == B > 1 else 'Byte')
    elif KB <= B < MB:
        return '{0:.2f} KB'.format(B/KB)
    elif MB <= B < GB:
        return '{0:.2f} MB'.format(B/MB)
    elif GB <= B < TB:
        return '{0:.2f} GB'.format(B/GB)
    elif TB <= B:
        return '{0:.2f} TB'.format(B/TB)

def progres(recv_size, total_size):
    bar_length = 50
    percent = float(recv_size) / float(total_size)
    hashes = '=' * int(percent * bar_length)
    spaces = ' ' * (bar_length - len(hashes))

    sys.stdout.write("\r传输中: [%s] %d%%  %s/%s " % (hashes + spaces, percent * 100,
                                                   humanbytes(recv_size), humanbytes(total_size)))
    sys.stdout.flush()

if __name__ == '__main__':
    client = FTPClient()
    client.interactive()

client.py

服务端代码：

import os
import sys

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# 入口程序必须先 指定 基础目录。以便于其余的调用程序，可以通过这个路径，进行相对的导入
sys.path.append(BASE_DIR)  # 将基础目录添加到，路径列表中

if __name__ == '__main__':
    from core import management
    # print()
    # ['luffy_server.py', 'start']
    # sys.argv 把用户终端输入的命令，拿到并把拿到的列表，交给 解析命令的类。传给__init__了
　　 #['luffy_server.py', 'start']
    argv_parser = management.ManagementTool(sys.argv)
    argv_parser.execute()

import os
import socket

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

HOST = "127.0.0.1"  #  服务端IP 用于服务端进行绑定使用
PORT = 8080  # 服务端 端口

ADDRESS_FAMILY = socket.AF_INET
SOCKET_TYPE = socket.SOCK_STREAM
ALLOW_REUSE_ADDRESS = True
MAX_PACKET_SIZE = 8192
MAX_SOCKET_LISTEN = 5
CODING = 'utf-8'  # 指定编码类型
USER_HOME_DIR = os.path.join(BASE_DIR, 'home')

ACCOUNT_FILE = os.path.join(BASE_DIR, 'conf', 'accounts.ini')

settings

import hashlib
import configparser
from .import settings

def make_md5_on_file(file_path):
    '''给文件制作md5  每次都要打开文件，要想办法保存到一个位置，当文件发生修改时更新这个md5'''
    m = hashlib.md5()
    with open(file_path, 'rb') as f:
        for line in f:
            bytes_str = line
            m.update(bytes_str)
        md5value = m.hexdigest()
        return md5value

def load_all_user_info():
    '''由FTPserver调用，加载所有的用户数据到内存'''
    confing = configparser.ConfigParser()
    confing.read(settings.ACCOUNT_FILE)
    return confing

conf_tool.py

from core import main

class ManagementTool(object):
    '''负责对 用户输入的指令，进行解析。并调用相应的模块处理'''
    def __init__(self, sys_argv):
        self.sys_argv = sys_argv
        self.verification()

    def verification(self):
        '''由构造函数调用 验证用户输入的指令是否合法，如果不合法。打印帮助信息'''
        if len(self.sys_argv) < 2:  # sys.argv 列表中默认会带上文件名，所以长度必须不能小于2
            self.help_msg()
        cmd = self.sys_argv[1]
        if not hasattr(self, cmd):
            print('无效语法')
            self.help_msg()

    def help_msg(self):
        msg = '''
        start       start FTP server
        stop        stop FTP server
        restart     restart FTP server
        createuser  username  create a ftp user
        其余功能还没扩展呢'''
        exit(msg)  # 如果命令输入的是错误的，就退出程序。因为 如果继续向后走的话，会因为没有这个命令报错。
        # 虽然可以，加上循环。让用户继续输入。不过 再来一次就好了。没必要那么麻烦

    def execute(self):
        '''进行解析并执行指令，写在这里可以进行扩展'''
        cmd = self.sys_argv[1]
        func = getattr(self, cmd)
        func()   # 这里并没有传参数，因为sys.argv 是构造函数中的，相当于类中的一个全局变量。
        # 其余函数 直接调用就好了，不需要还要在这里传参数

    def start(self):
        '''启动FTP server'''
        server = main.FTPServer(self)  # FTPServer 有可能用到当前这个程序的一些东西，那么就把实例本身
        server.run_forever()            # 当作一个参数 传给FTPServer  那就可以在FTPServer中使用这个类中的属性了

    def stop(self):
        '''这是停止服务'''
        print('停止服务了')

    def restart(self):
        '''重新启动服务器'''
        print('重新启动服务器')

    def createuser(self):
        '''管理员创建用户使用的'''
        print('管理员专用')

management.py

 import socket
 import json
 import hashlib
 import struct
 import os
 import subprocess
 from conf import settings
 from conf import config_tool

 class FTPServer(object):
     '''处理与客户端所有的交互的 socket server
     所需要的参数，从settings 和 实例化时 传进来'''
     address_family = settings.ADDRESS_FAMILY
     socket_type = settings.SOCKET_TYPE
     allow_reuse_address = settings.ALLOW_REUSE_ADDRESS  # 是否重用端口开关 默认 Fales
     max_packet_size = settings.MAX_PACKET_SIZE  # 最大传输流量8192
     coding = settings.CODING  # utf-8
     request_queue_size = settings.MAX_SOCKET_LISTEN  # 最大挂起数量5
     server_dir = settings.USER_HOME_DIR  # 总家目录

     STATUS_CODE = {
         0: 'normal ',
         100: 'ls Error info',
         101: 'current dir has no file at all',
         200: 'Username Password Authentication Successful!',
         201: 'wrong username or password',
         300: 'The file was not find',
         301: 'find the file',
         302: 'The server did not receive the complete data',
         303: 'The server receive the complete data',
         400: 'The dirname was not find',
         401: 'Has entered this directory',
         500: "It's already on the top floor"
     }

     def __init__(self, management_instance, bind_and_acttivate=True):  # 在management类中start的位置，将management的实例传进来
         '''构造函数，可扩展 不可覆盖'''
         self.management_instance = management_instance  # 类的构造函数中，接收这个参数，这样就能够使用到传进来的实例的对象中的属性
         self.socket = socket.socket(self.address_family, self.socket_type)
         self.config_obj = config_tool.load_all_user_info()  #
         if bind_and_acttivate:
             try:
                 self.server_bind()
                 self.server_activate()
             except Exception:
                 self.server_close()

     def server_bind(self):
         """由构造函数调用以绑定套接字"""
         if self.allow_reuse_address:
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         self.socket.bind((settings.HOST, settings.PORT))
         self.server_address = self.socket.getsockname()

     def server_activate(self):
         """由构造函数调用以激活服务器 """
         self.socket.listen(self.request_queue_size)

     def get_request(self):
         """从套接字获取请求和客户机地址。 """
         return self.socket.accept()

     def server_close(self):
         """调用以清理服务器。"""
         self.socket.close()

     def close_request(self):
         """调用以清除单个请求"""
         self.request.close()

     def run_forever(self):
         '''启动socket server 运行到天荒地老'''
         print('starting luffyFTP server on %s:%s'.center(50, '-') % (settings.HOST, settings.PORT))
         while True:
             try:
                 self.request, self.client_addr = self.get_request()
                 print('from client %s' % (self.client_addr,))
                 # print(self.request, self.cline_addr)
                 self.handle()
             except Exception:
                 print('客户端 %s 断开连接' % (self.client_addr,))
                 self.close_request()

     def handle(self):
         '''接收客户端发来的报头 解析之后 进行相应的操作'''
         while True:
             raw_data = self.request.recv(4)
             if not raw_data:
                 print('client %s disconnection' % self.client_addr)
                 del self.request, self.client_addr
                 break
             data_len = struct.unpack('i', raw_data)[0]
             date_json = self.request.recv(data_len).decode(self.coding)
             data_dic = json.loads(date_json)
             action_type = data_dic.get('action_type')
             if action_type:  # 不能为空
                 if hasattr(self, "_%s" % action_type):
                     func = getattr(self, "_%s" % action_type)
                     func(data_dic)

     def send_response(self, status_code, *args, **kwargs):
         '''打包发送状态码消息给客户端'''
         data = kwargs
         data['status_code'] = status_code
         data['status_msg'] = self.STATUS_CODE[status_code]
         bytes_data = json.dumps(data).encode('utf-8')
         head_struct = struct.pack('i', len(bytes_data))

         self.request.send(head_struct)   # 这里时通信循环干的事情了，一定要是self.request
         self.request.send(bytes_data)

     def authentication(self, username, password):
         '''对用户名密码进行验证'''
         if username in self.config_obj:
             _password = self.config_obj[username]['password']
             md5_obj = hashlib.md5()
             md5_obj.update(password.encode('utf-8'))
             if md5_obj.hexdigest() == _password:
                 return True

     def _auth(self, data):
         '''处理用户认证请求'''
         if self.authentication(data.get('username'), data.get('password')):
             self.home_dir = os.path.join(self.server_dir, data.get('username'))
             self.userhome_dir = os.path.join(self.server_dir, data.get('username'))
             self.send_response(status_code=200,)
         else:
             self.send_response(status_code=201)

     def _put(self, data):
         '''用户进行上传,'''
         file_path = os.path.normpath(os.path.join(self.userhome_dir, data['filename']))
         filesize = data['filesize']
         cilent_md5 = data['md5value']
         result = self.recv_file(file_path, cilent_md5, filesize)
         if result:
             self.send_response(status_code=303)
         else:
             self.send_response(status_code=302)

     def _get(self, data):
         '''用户进行下载'''
         file_path = os.path.normpath(os.path.join(self.userhome_dir, data['filename']))
         if not os.path.isfile(file_path):
             self.send_response(status_code=300)
         else:
             filesize = os.path.getsize(file_path)
             md5value = config_tool.make_md5_on_file(file_path)
             self.send_response(status_code=301, filesize=filesize, md5value=md5value, filename=data['filename'])
             self.send_file(file_path)

     def recv_file(self, file_path, cilent_md5, filesize, recv_size=0):
         '''接收文件,需要文件存放路径,MD5值,文件大小, 已接受的文件大小'''

         with open(file_path, 'ab') as f:
             while recv_size < filesize:
                 recv_data = self.request.recv(self.max_packet_size)
                 if not recv_data: break
                 f.write(recv_data)
                 recv_size += len(recv_data)
         md5value = config_tool.make_md5_on_file(file_path)
         if md5value == cilent_md5:
             return True

     def send_file(self, file_path, send_size=0):
         with open(file_path, 'rb') as f:
             f.seek(send_size)
             for line in f:
                 self.request.send(line)

     def _re_get(self, data):
         abs_file = data['abs_file'].strip('\\')
         file_path = os.path.normpath(os.path.join(settings.USER_HOME_DIR, abs_file))
         if not os.path.isfile(file_path):
             self.send_response(status_code=300)
         if os.path.getsize(file_path) != data['total_size']:
             self.send_response(status_code=300)
         else:
             md5value = config_tool.make_md5_on_file(file_path)
             self.send_response(status_code=301, md5value=md5value, filename=os.path.basename(file_path))
             self.send_file(file_path, send_size=data['received_file_size'])

     def _re_put(self, data):
         '''用于用户上传,没有传完整,续传使用'''
         abs_file = data['abs_file'].strip('\\')
         file_path = os.path.normpath(os.path.join(settings.USER_HOME_DIR, abs_file))
         md5value = data['md5value']

         if not os.path.isfile(file_path):
             self.send_response(status_code=300)
         else:
             received_file_size = os.path.getsize(file_path)  # 返回给客户端，已经收到了多少字节
             self.send_response(status_code=301, file_size=received_file_size)
             filesize = data['filesize'] - received_file_size
             result = self.recv_file(file_path, md5value, filesize)
             if result:
                 self.send_response(status_code=303)
             else:
                 self.send_response(status_code=302)

     def _ls(self, data):
         '''给客户端显示当前文件下有哪些内容'''
         cmd_boj = subprocess.Popen('dir %s' % self.userhome_dir, shell=True, stdout=subprocess.PIPE,
                          stderr=subprocess.PIPE)
         stdout = cmd_boj.stdout.read()
         stderr = cmd_boj.stderr.read()
         cmd_result = (stdout + stderr).decode('GBK')
         if not cmd_result:
             self.send_response(status_code=101)
         else:
             self.send_response(status_code=0, dir_info=cmd_result)

     def _cd(self, data):
         '''进入用户想要进入的目录当中'''
         dirname = data['dirname']
         if not dirname.startswith('.'):
             if os.path.isdir(os.path.join(self.userhome_dir, dirname)):
                 self.userhome_dir = os.path.join(self.userhome_dir, dirname)
                 self.client_dir = self.userhome_dir.replace(settings.USER_HOME_DIR, '')
                 self.send_response(status_code=401, dirn=self.client_dir)
             else:
                 self.send_response(status_code=400)
         else:
             li = dirname.split('\\')
             count = 0
             while count < len(li):
                 '''循环 如果 当前路径 已经到用户的家目录，就返回500 已经到达最顶层'''
                 if self.userhome_dir == self.home_dir:
                     self.send_response(status_code=500)
                 else:
                     self.userhome_dir = os.path.dirname(self.userhome_dir)
                     self.client_dir = self.userhome_dir.replace(settings.USER_HOME_DIR, '')
                     self.send_response(status_code=0, dirn=self.client_dir)
                 count += 1

     def _make_dir(self):
         '''创建用户想要创建的文件夹'''
         print('创建用户想要创建的文件夹')

main.py