一. 文件传输

# ===================================== 服务器端 ===================================== # 思路: 做一个要穿的内容的字典, 计算字典的长度, 然后发送字典的长度和字典的json的字符串, 再发送内容import structimport socketimport jsonimport hashlibsock=socket.socket()sock.bind(('127.0.0.1',8800))sock.listen(5)while 1:    print("server is working....")    conn,addr= sock.accept()    while 1:        # 接收json的打包长度        file_info_length_pack=conn.recv(4)        file_info_length=struct.unpack("i",file_info_length_pack)[0]        # 接收json字符串        file_info_json=conn.recv(file_info_length).decode("utf8")        file_info=json.loads(file_info_json)        action=file_info.get("action")        filename=file_info.get("filename")        filesize=file_info.get("filesize")        # 循环接收文件        md5=hashlib.md5()        with open("put/"+filename,"wb") as f:            recv_data_length=0            while recv_data_length

　　

二. socketserver模块

import socketserverclass Myserver(socketserver.BaseRequestHandler):    def handle(self):        # 字节类型        while 1:            # 针对window系统            try:                print("等待信息")                data = self.request.recv(1024)  # 阻塞                # 针对linux                if len(data) == 0:                    break                if data == b'exit':                    break                response = data + b'SB'                self.request.send(response)            except Exception as e:                break        self.request.close()# 1 创建socket对象 2 self.socket.bind()  3 self.socket.listen(5)server=socketserver.ForkingUDPServer(("127.0.0.1",8899),Myserver)server.serve_forever()