网站制作与管理技术...,品牌推广网站怎么做,企业网站开发时间,手机版企业网站h5架构图 服务与程序
用docker启动mqtt broker(服务器)
访问#xff1a;http://192.168.88.173:18083/#/dashboard/overview
用户名#xff1a;admin 密码#xff1a;*** 消息发布者(查找sop的url地址#xff0c;发布出去)
修改url#xff0c;重新发布消息
import ran…架构图 服务与程序
用docker启动mqtt broker(服务器)
访问http://192.168.88.173:18083/#/dashboard/overview
用户名admin 密码*** 消息发布者(查找sop的url地址发布出去)
修改url重新发布消息
import random
from paho.mqtt import client as mqtt_clientbroker 192.168.88.173
port 1883
topic /python/mqttclient_id fpython-mqtt-{random.randint(0, 1000)}def connect_mqtt():def on_connect(client, userdata, flags, rc):if rc 0:print(Connected to MQTT Broker!)else:print(Failed to connect, return code %d\n, rc)raise Exception(连接MQTT 服务失败)client mqtt_client.Client(mqtt_client.CallbackAPIVersion.VERSION1,client_id) # 创建客户端client.on_connect on_connect # 指定回调函数client.connect(broker, port) # 开始连接return clientdef publish(client):msg http://hhy201904.x3322.net:8070/webmsg http://www.baidu.comresult client.publish(topic, msg)status result[0]if status 0:print(fSend {msg} to topic {topic})else:print(fFailed to send message to topic {topic})def run():client connect_mqtt()client.loop_start() # 开启一个独立的循环通讯线程publish(client)if __name__ __main__:run()
消息订阅者(订阅topic主题)
获取订阅消息启动浏览器
import random
import os
from paho.mqtt import client as mqtt_client
import webbrowserbroker 192.168.88.173
port 1883
topic /python/mqttclient_id fpython-mqtt-{random.randint(0, 100)}def connect_mqtt() - mqtt_client:def on_connect(client, userdata, flags, rc):if rc 0:print(Connected to MQTT Broker!)else:print(Failed to connect, return code %d\n, rc)client mqtt_client.Client(mqtt_client.CallbackAPIVersion.VERSION1,client_id)client.on_connect on_connectclient.connect(broker, port)return clientdef subscribe(client: mqtt_client):def on_message(client, userdata, msg): # 回调函数print(fReceived {msg.payload.decode()} from {msg.topic} topic)url msg.payloadwebbrowser.open(url, 1)os.system(start /max edge)client.subscribe(topic)client.on_message on_messagedef run():client connect_mqtt()subscribe(client)client.loop_forever()if __name__ __main__:run()
树莓派设置
python开机自启动(打开订阅者服务)
目录/home/tx/.config/autostart/my.desktop
[Desktop Entry]
TypeApplication
Execlxterminal -e python3 -i /home/pi/example.py chromium-browser --disable-popup-blocking --no-first-run --disable-desktop-notifications --kiosk http://www.baidu.com
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