python实现rabbitnq之mqtt订阅

python实现rabbitnq之mqtt订阅

mqtt协议的介绍我这儿就不提了 网上多的是 一查就有了
rabbitnq下载及安装参考:

https://blog.youkuaiyun.com/weixin_44015043/article/details/104861596#comments_13065410

此处先得pip install paho-mqtt获得mqtt的包

直接上代码:

-- coding: utf-8 --

以下代码在2019年2月28日 python3.6环境下运行通过

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

HOST = “自己rabbitmq的ip”
PORT = 1883
client_id = “” # 没有就不写，此处部分内容用xxx代替原内容，下同

def on_connect(client, userdata, flags, rc):
print("Connected with result code "+str(rc))
client.subscribe(“amq.topic”) # 订阅消息

def on_message(client, userdata, msg):
print(“主题:”+msg.topic+" 消息:"+str(msg.payload.decode(‘utf-8’)))

def on_subscribe(client, userdata, mid, granted_qos):
print(“On Subscribed: qos = %d” % granted_qos)

def on_disconnect(client, userdata, rc):
if rc != 0:
print(“Unexpected disconnection %s” % rc)

client = mqtt.Client(client_id)
client.username_pw_set(“mqtt-test”, “mqtt-test”)
client.on_connect = on_connect
client.on_message = on_message
client.on_subscribe = on_subscribe
client.on_disconnect = on_disconnect
client.connect(HOST, PORT, 60)
client.publish(“amq.topic”, ) # 发送消息
client.loop_forever()