import sys,os,time,_thread

from socket import *

class Server(object):

    def __init__(self):                      #用于初始化端口和IP

        self.host = 'localhost'

        self.port = 50001

        self.server()

    def now(self):                           #返回当前时间

        return time.asctime()

    def server_thread(self,conn):            #多线程运行服务器

        sockfile = conn.makefile('r')

        filename = sockfile.readline()[:-1]

        try:  # 读取文件内容，并传输

            file = open(filename, 'rb')

            while True:

                bytes = file.read(1024)

                if not bytes: break

                sent = conn.send(bytes)

                assert sent == len(bytes)

        except:

            print('Error downloading file on server:', filename)

        conn.close()

    def server(self):                         #开启线程

        sock = socket(AF_INET, SOCK_STREAM)

        sock.bind((self.host, self.port))

        sock.listen(5)

        while True:

            conn, addr = sock.accept()

            print('Server connect by', addr, 'at', self.now())

            _thread.start_new_thread(self.server_thread, (conn,))  

Server()

import sys,os,time,_thread

from socket import *

from tkinter import *

from tkinter.messagebox import showinfo

class Client(object):

    def __init__(self):

        pass

    def now(self):

        return time.asctime()

    def client(self,host,port,filename):               #客户端运行

        sock = socket(AF_INET, SOCK_STREAM)

        sock.connect((host, port))

        sock.send((filename + '\n').encode())

        dropdir = 'New ' + os.path.split(filename)[1]  # 获取文件地址，保存在默认目录下

        file = open(dropdir, 'wb')                     # 创建本地文件

        while True:

            data = sock.recv(1024)

            if not data: break

            file.write(data)                           # 储存数据

        sock.close()

        file.close()

        print('Client got ',filename, 'at', self.now())

def onSunbmit(content):                                #定义按钮的函数

    host = content['Server'].get()

    port = int(content['Port'].get())

    filename = content['File'].get()

    Client.client(Client(),host,port,filename)

    showinfo('Get-File','Download complete')

def main():                                            #利用tkinter设置GUI界面

    box = Tk()

    labels = ['Server', 'Port', 'File']

    rownum = 0

    content = {}

    for label in labels:

        Label(box, text=label).grid(column=0, row=rownum)

        entry = Entry(box)

        entry.grid(column=1, row=rownum, sticky=E + W)

        content[label] = entry

        rownum += 1

    box.columnconfigure(0, weight=0)

    box.columnconfigure(1, weight=1)

    Button(text='Submit', command=lambda :onSunbmit(content)).grid(row=rownum,column=0,columnspan=2)

    box.title('Get——File')

    box.bind('<Return>',(lambda event:onSunbmit(content)))

    mainloop()

main()