使用python和MQTT.fx连接mqtt

1.使用python连接mqtt

环境：python3.6+

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import paho.mqtt.client as mqtt
import json
def on_connect(client, userdata, flags, rc):
    client.subscribe("chat")
    client.publish('chat', json.dumps('hello,everyone.....'))
def on_message(client, userdata, msg):
    info = json.loads(msg.payload.decode())
    say_user = info.get("user")
    print("info:" + str(info))
    if say_user != client.user:
        print(info.get('say') + '\n')
if __name__ == '__main__':
    HOST = 'IP' #you mqtt server ip
    PORT = 1883
    client = mqtt.Client(client_id='1008001', clean_session=False)
    client.on_connect = on_connect
    client.on_message = on_message
    client.connect(HOST, PORT)
    client.loop_start()
    while True:
        say_str = input('')
        print(say_str)
        if say_str:
            info = {'say': say_str}
            print(str(info))
            client.publish('chat', json.dumps(info))