import paho.mqtt.client as mqtt import time import sys def on_connect(client, userdata, flags, rc): #连接成功的回调函数 print("Connected with result code " + str(rc)) def on_subscribe(client,userdata,mid,granted_qos): #发送成功的回调函数 print("消息发送成功") def on_message(client, us...
mqttc.on_connect = on_connect mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py...
mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() MqttServer.py import sys import datetime import socket, sys import paho.mqtt....
message是一个描述所有消息参数的MQTTMessage。defon_message(client, userdata, msg):print(msg.topic +" "+str(msg.payload))# 当客户端有日志信息时调用defon_log(client, obj, level, string):print("Log:"+ string)# 实例化client = mqtt.Client()# client.username_pw_set("admin", "password")# ...
mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码(如果需要的话) #mqttc.username_pw_set(username, password=password) mqttc.connect(strBroker, port, 60) mqttc.subscribe(topic, 0) mqttc.loop_forever() server.py 1 2 3 4 5 6 7 ...
mqttc = mqtt.Client("test") mqttc.on_message = on_message mqttc.on_connect = on_connect mqttc.on_publish = on_publish mqttc.on_subscribe = on_subscribe mqttc.on_log = on_log # 设置账号密码 # mqttc.username_pw_set(username, password=password) ...
一、安装paho-mqtt 通过命令安装 二、实现MQTT发布 三、实现MQTT订阅 1.订阅消息-方法1 2.订阅消息-方法2
defmain():on_mqtt_connect()on_publish("/test/server","Hello Python!",1)on_subscribe()whileTrue:passif__name__=='__main__':main() 注解函数: client.connect(self, host, port, keepalive, bind_address) client.publish(self, topic, payload, qos, retain) client.subscribe(self, topic, qo...
编写消息回调函数on_message,该函数将在客户端从 MQTT Broker 收到消息后被调用,在该函数中我们将打印出订阅的 topic 名称以及接收到的消息内容。 defsubscribe(client:mqtt_client):defon_message(client,userdata,msg):print(f"Received `{msg.payload.decode()}` from `{msg.topic}` topic")client.subscribe(...
client.on_message = on_messagedefrun(): client = connect_mqtt() subscribe(client) client.loop_forever()if__name__ =='__main__': run() 测试 消息发布 运行MQTT 消息发布代码,我们将看到客户端连接成功,并且成功将消息发布。 python3 pub.py ...