python实现mqtt_python 如何 实现 mqtt 接入阿里-问答-阿里云开发者社区-阿里云

要在Python中实现MQTT接入阿里云，需要使用Paho MQTT客户端库和阿里云IoT Python SDK。以下是实现的步骤：

1.安装paho-mqtt和aliyun-iot-sdk-core第三方库：

pip install paho-mqtt aliyun-iot-sdk-core

2.创建一个MQTT客户端并连接到阿里云IoT：

import paho.mqtt.client as mqtt
from aliyunsdkcore.client import AcsClient
from aliyunsdkiot.request.v20170420 import RegisterDeviceRequest
from aliyunsdkiot.request.v20170420 import PubRequest

client = mqtt.Client(client_id="your_client_id")
client.username_pw_set(username="your_product_key&your_device_name", password="your_device_secret")
client.connect("your_product_key.iot-as-mqtt.cn-shanghai.aliyuncs.com", port=1883)

3.注册设备并获取设备的Topic：

client = AcsClient("your_access_key_id", "your_access_key_secret", "cn-shanghai")

request = RegisterDeviceRequest.RegisterDeviceRequest()
request.set_ProductKey("your_product_key")
request.set_DeviceName("your_device_name")
response = client.do_action_with_exception(request)
topic = response["Data"]["Device"]["Topic"]

4.发布和订阅消息：

def on_message(client, userdata, msg):
    print(msg.topic + " " + str(msg.payload))

client.subscribe(topic)
client.on_message = on_message

request = PubRequest.PubRequest()
request.set_ProductKey("your_product_key")
request.set_TopicFullName(topic)
request.set_MessageContent("hello world")
client.publish(topic, payload="hello world", qos=0)

以上是Python实现MQTT接入阿里云的简单示例，需要根据自己的实际情况进行修改。