python怎么传送文件

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# @File    : 文件传输-服务端.py

# @Software: PyCharmfrom socket import *import structimport jsonimport ostcp_server = socket(AF_INET, SOCK_STREAM)ip_port = (('127.0.0.1', 8080))buffsize = 1024

#   端口的重复利用

tcp_server.setsockopt(SOL_SOCKET, SO_REUSEPORT, 1)tcp_server.bind(ip_port)tcp_server.listen(5)print('还没有人链接')

while True:   

       '''链接循环'''

       conn, addr = tcp_server.accept()   

       print('链接人的信息:', addr)   

       while True:       

              if not conn:           

                    print('客户端链接中断')           

                    break            

               '''通信循环'''               

               filemesg = input('请输入要传送的文件名加后缀>>>').strip()            

               filesize_bytes = os.path.getsize(filemesg) # 得到文件的大小,字节              

               filename = 'new' + filemesg               

               dirc = {          

                       'filename': filename,      

                       'filesize_bytes': filesize_bytes,

                }              

                head_info = json.dumps(dirc)  # 将字典转换成字符串               

                head_info_len = struct.pack('i', len(head_info))

                #  将字符串的长度打包               

                #   先将报头转换成字符串(json.dumps), 再将字符串的长度打包               

                #   发送报头长度,发送报头内容,最后放真是内容               

                #   报头内容包括文件名,文件信息,报头               

                #   接收时:先接收4个字节的报头长度,               

                #   将报头长度解压,得到头部信息的大小,在接收头部信息, 反序列化(json.loads)               

                #   最后接收真实文件               

                conn.send(head_info_len)  # 发送head_info的长度               

                conn.send(head_info.encode('utf-8'))      

                #   发送真是信息               

                with open(filemesg, 'rb') as f:                      

                     data = f.read()                       

                     conn.sendall(data)     

                print('发送成功')

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# @File    : 文件传输_客户端.py

# @Software: PyCharmfrom socket import *

import struct

import json

import os

import sys

import time

from 进度条 import process_bar

tcp_client = socket(AF_INET, SOCK_STREAM)

ip_port = (('127.0.0.1', 8080))

buffsize = 1024

tcp_client.connect_ex(ip_port)

print('等待链接服务端')

while True:

      head_struct = tcp_client.recv(4) # 接收报头的长度,

      if head_struct:      

            print('已连接服务端,等待接收数据')

      head_len = struct.unpack('i', head_struct)[0] # 解析出报头的字符串大小

      data = tcp_client.recv(head_len)# 接收长度为head_len的报头内容的信息 (包含文件大小,文件名的内容)    

      head_dir = json.loads(data.decode('utf-8'))

      filesize_b = head_dir['filesize_bytes']

      filename = head_dir['filename']   

        #   接受真的文件内容

     recv_len = 0

     recv_mesg = b''

     old = time.time()

      f = open(filename, 'wb')  

     while recv_len < filesize_b:

             percent = recv_len / filesize_b

            process_bar(percent)       

            if filesize_b - recv_len > buffsize:

                  recv_mesg = tcp_client.recv(buffsize)

                 f.write(recv_mesg)

                 recv_len += len(recv_mesg)      

              else:

                 recv_mesg = tcp_client.recv(filesize_b - recv_len)

                 recv_len += len(recv_mesg)

                 f.write(recv_mesg)  

     print(recv_len, filesize_b)

      now = time.time()

      stamp = int(now - old)  

      print('总共用时%ds' % stamp)

      f.close()

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# @File    : 进度条.py

# @Software: PyCharm

import sys

import time

def process_bar(precent, width=50):        use_num = int(precent*width)        space_num = int(width-use_num)        precent = precent*100 

  #   第一个和最后一个一样梯形显示, 中间两个正确,但是在python2中报错   # print('[%s%s]%d%%'%(use_num*'#', space_num*' ',precent))    # print('[%s%s]%d%%'%(use_num*'#', space_num*' ',precent), end='\r')    print('[%s%s]%d%%'%(use_num*'#', space_num*' ',precent),file=sys.stdout,flush=True, end='\r')

    # print('[%s%s]%d%%'%(use_num*'#', space_num*' ',precent),file=sys.stdout,flush=True)

#for i in range(21):

#       precent = i/20

#       process_bar(precent)

#        time.sleep(0.2)