如何在python3x的套接字上正确发送字典的内容? [英] How to send the content of a dictionary properly over sockets in python3x?

问题描述

在python3.x中使用套接字，我想通过套接字发送字典的内容，由于某些原因，该行上方的链接无法回答该问题...

Using sockets in python3.x I want to send the content of a dictionary over a socket, which for some reasons is NOT answered by the link just above this line...

client.py:

client.py:

a = {'test':1, 'dict':{1:2, 3:4}, 'list': [42, 16]}
bytes = foo(a)
sock.sendall(bytes)

server.py:

server.py:

bytes = sock.recv()
a = bar(bytes)
print(a)

如何将任何字典转换为字节序列(可以通过套接字发送)以及如何转换回?我更喜欢一种简洁的方法.

How to convert any dictionary to a sequence of bytes (to be able to be sent through a socket) and how to be converted back? I prefer a clean and simple way to do this.

到目前为止我尝试过的:

What I have tried so far:

sock.sendall(json.dumps(data))
TypeError: 'str' does not support the buffer interface

sock.sendall(bytes(data, 'UTF-8'))
TypeError: encoding or errors without a string argument

data = sock.recv(100)
a= data.decode('UTF-8')
AttributeError: 'str' object has no attribute 'decode'

推荐答案

这主要是对注释进行汇总，但是您需要将dict转换为json str对象，然后将该str对象转换为bytes对象，方法是将其编码，然后通过套接字发送该对象.在服务器端，您需要将通过套接字发送的bytes对象解码回str，然后使用json.loads将其转换回dict.

This is primarily summarizing the comments, but you need to convert the dict to a json str object, convert that str object to a bytes object by encoding it, and then send that over the socket. On the server-side, you need to decode the bytes object sent over the socket back to a str, and then use json.loads to turn it back into a dict.

客户:

b = json.dumps(a).encode('utf-8')
s.sendall(b)

服务器:

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('localhost', 1234))
s.listen(1)
conn, addr = s.accept()
b = b''
while 1:
    tmp = conn.recv(1024)
    b += tmp
d = json.loads(b.decode('utf-8'))
print(d)

这篇关于如何在python3x的套接字上正确发送字典的内容?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！