python mqtt client publish操作

標籤：import   elf   scribe   word   forever   pytho   __name__   res   odi   

使用Python庫paho.mqtt.client 類比mqtt client 串連broker，publish topic。

#-*-coding:utf-8-*-import paho.mqtt.client as mqttclass mqttHandle(object):    def __init__(self,mqtt_info):        self.mqtt_info=mqtt_info    def on_connect(client, userdata, flags, rc):        print("Connected with result code " + str(rc))        client.subscribe("chat")    def on_message(client, userdata, msg):        print("topic:" + msg.topic + " payload:" + str(msg.payload))    def publish(self):        client = mqtt.Client()        client.on_connect = mqttHandle.on_connect        client.on_message = mqttHandle.on_message        client.username_pw_set(self.mqtt_info[‘username‘], self.mqtt_info[‘password‘])        client.connect(self.mqtt_info[‘host‘], self.mqtt_info[‘port‘], 60)        client.publish(self.mqtt_info[‘topic‘], str(self.mqtt_info[‘payload‘]))        #client.loop_forever()        client.disconnect()        print(‘publish topic over‘)if __name__=="__main__":    mqtt_info={    ‘username‘:‘username‘,    ‘password‘:‘password‘,    ‘host‘:‘10.10.10.10‘,    ‘port‘:1833,    ‘topic‘:‘test‘,    ‘payload‘:‘hello world‘,}    mqttc=mqttHandle(mqtt_info)    mqttc.publish()

 

python mqtt client publish操作