ftp上传下载文件

 1 import os 2 import json 3 import socket 4 import struct 5 ?6 sk = socket.socket() 7 sk.connect((‘127.0.0.1‘,8090)) 8 ?9 buffer = 102410 11 head = {‘filepath‘:r‘/Users/mango/Downloads/试题/07 python fullstack s9day9 第一次考试试题讲解‘,12 ????????‘filename‘:r‘07 python fullstack s9day9 第一次考试试题讲解.mp4‘,13 ????????‘filesize‘:None} ???????#报头14 file_path = os.path.join(head[‘filepath‘],head[‘filename‘]) ?????#文件路径 ?15 filesize = os.path.getsize(file_path) ?????????????#文件大小 ?16 head[‘filesize‘] = filesize17 18 json_head = json.dumps(head) ???????#字典转字符串19 bytes_head = json_head.encode(‘utf-8‘) ?????#字符串转bytes ???20 head_len = len(bytes_head) ??????????#计算报头的bytes有多长21 struct_len = struct.pack(‘i‘,head_len) ?????#打包成固定的4个字节22 sk.send(struct_len) ???????#发送长度23 sk.send(bytes_head) ?????#发送报头24 with open(file_path,‘rb‘)as f: ???#打开文件25 ????while filesize:26 ????????if filesize >= buffer:27 ????????????content = f.read(buffer)28 ????????????filesize -= buffer29 ????????????sk.send(content)30 ????????else:31 ????????????f.read(filesize)32 ????????????filesize -= buffer33 ????????????sk.send(content)34 sk.close()# ???????????????????????????

 1 import socket ?????????????????????????????????????????2 import struct ?????????????????????????????????????????3 import json ???????????????????????????????????????????4 ???????????????????????????????????????????????????????5 sk = socket.socket() ??????????????????????????????????6 sk.bind((‘127.0.0.1‘,8090)) ???????????????????????????7 sk.listen() ???????????????????????????????????????????8 buffer = 1024 ?????????????????????????????????????????9 conn,addr = sk.accept() ??????????????????????????????10 ??????????????????????????????????????????????????????11 head_len = conn.recv(4) ??????????????????????????????12 head_len = struct.unpack(‘i‘,head_len)[0] ????????????13 json_head = conn.recv(head_len).decode(‘utf-8‘) ??????14 head = json.loads(json_head) ??# 报头 ??????????????????15 filesize = head[‘filesize‘] ??????????????????????????16 with open(head[‘filename‘],‘wb‘)as f: ????????????????17 ????while filesize: ??????????????????????????????????18 ????????if filesize >= buffer: ???????????????????????19 ????????????content = conn.recv(buffer) ??????????????20 ????????????f.write(content) ?????????????????????????21 ????????????filesize -= buffer ???????????????????????22 ????????else: ????????????????????????????????????????23 ????????????content = conn.recv(filesize) ????????????24 ????????????f.write(content) ?????????????????????????25 ????????????break ????????????????????????????????????26 conn.close() ?????????????????????????????????????????27 sk.close() ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????