python3 mqtt 客户端以及服务端

pip3 install paho-mqtt

client

#!/usr/bin/env python
#coding=utf-  

import json
import sys
import os
import paho.mqtt.client as mqtt
import time

sys.path.append(os.path.abspath(os.path.dirname(__file__) + '/' + '..'))
sys.path.append("..")

TASK_TOPIC = 'test'  # 客户端发布消息主题

client_id = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))

client = mqtt.Client(client_id, transport='tcp')

client.connect("127.0.0.1", , )  # 此处端口默认为1883，通信端口期keepalive默认60
client.loop_start()

def clicent_main(message: str):
    """
    客户端发布消息
    :param message: 消息主体
    :return:
    """
    time_now = time.strftime('%Y-%m-%d %H-%M-%S', time.localtime(time.time()))
    payload = {"msg": "%s" % message, "data": "%s" % time_now}
    # publish(主题：Topic; 消息内容)
    client.publish(TASK_TOPIC, json.dumps(payload, ensure_ascii=False))
    print("Successful send message!")
    return True

if __name__ == '__main__':
    msg = "我是一条测试数据！"
    clicent_main(msg)

server

#!/usr/bin/env python
#coding=utf-  

import json
import sys
import os
import time
import paho.mqtt.client as mqtt
sys.path.append(os.path.abspath(os.path.dirname(__file__) + '/' + '..'))
sys.path.append("..")

REPORT_TOPIC = 'test'  # 主题

def on_connect(client, userdata, flags, rc):
    print('connected to mqtt with resurt code ', rc)
    client.subscribe(REPORT_TOPIC)  # 订阅主题

def on_message(client, userdata, msg):
    """
    接收客户端发送的消息
    :param client: 连接信息
    :param userdata:
    :param msg: 客户端返回的消息
    :return:
    """
    print("Start server!")
    payload = json.loads(msg.payload.decode('utf-8'))
    print(payload)

def server_conenet(client):
    client.on_connect = on_connect  # 启用订阅模式
    client.on_message = on_message  # 接收消息
    client.connect("127.0.0.1", , )  # 链接
    # client.loop_start()   # 以start方式运行，需要启动一个守护线程，让服务端运行，否则会随主线程死亡
    client.loop_forever()   # 以forever方式阻塞运行。

def server_stop(client):
    client.loop_stop()  # 停止服务端
    sys.exit()

def server_main():
    client_id = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))
    client = mqtt.Client(client_id, transport='tcp')
    server_conenet(client)

if __name__ == '__main__':
    # 启动监听
    server_main()

参考：

https://blog.csdn.net/sinat_32651363/article/details/87876978