Question

这是我的python tcp客户端。我想将一个json对象发送到server.But我不能使用sendall（）方法发送对象。我怎么能这样做？

import socket
import sys
import json

HOST, PORT = "localhost", 9999

m ='{"id": 2, "name": "abc"}'
jsonObj = json.loads(m)


data = jsonObj

# Create a socket (SOCK_STREAM means a TCP socket)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
    # Connect to server and send data
    sock.connect((HOST, PORT))
    sock.sendall(jsonObj)


    # Receive data from the server and shut down
    received = sock.recv(1024)
finally:
    sock.close()

print "Sent:     {}".format(data)
print "Received: {}".format(received)

Answer 1

略过json.loads()部分。将json对象作为json字符串发送，并从TCP客户端的字符串加载它。

同时检查：Python sending dictionary throught TCP

Answer 2

使用以下代码发送带有json的字典在我的程序中有效。

import socket
import sys
import json

HOST, PORT = "localhost", 9999

#m ='{"id": 2, "name": "abc"}'
m = {"id": 2, "name": "abc"} # a real dict.


data = json.dumps(m)

# Create a socket (SOCK_STREAM means a TCP socket)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
    # Connect to server and send data
    sock.connect((HOST, PORT))
    sock.sendall(bytes(data,encoding="utf-8"))


    # Receive data from the server and shut down
    received = sock.recv(1024)
    received = received.decode("utf-8")

finally:
    sock.close()

print "Sent:     {}".format(data)
print "Received: {}".format(received)

Answer 3

您可以从Python sending dictionary through TCP找到答案它最好将JSON对象转换为字典并使用以下代码段

import json
data = json.load(open("data.json"))
 //or 
data = json.load('{"id": 2, "name": "abc"}')

type(data)
print(data[<keyFromTheJsonFile>])

您应该使用pickle序列化它：

import pickle
dict = {...}
tcp_send(pickle.dumps(dict))

另一方面：

import pickle
dict = pickle.loads(tcp_recieve())

如果另一端不是用python编写的，则可以使用数据序列化格式，如xml，json或yaml。

如何在python中使用tcp套接字发送json对象

3 个答案: