import paho.mqtt.client as mqtt

# MQTT Broker 配置
BROKER = 'wrj.wisestcity.com'
PORT = 6010
TOPIC = "thing/product/1581F8HGX254V00A0BUY/osd"


# 消息接收回调
def on_message(client, userdata, msg):
    print(f"Received message: '{msg.payload.decode()}' from topic '{msg.topic}'")


# 连接成功回调
def on_connect(client, userdata, flags, rc):
    if rc == 0:
        print("Connected!")
        client.subscribe(TOPIC, qos=1)  # 订阅主题
    else:
        print(f"Connection failed with error code {rc}")


# 创建客户端
client = mqtt.Client()
client.username_pw_set("username", "my_password")
client.on_connect = on_connect
client.on_message = on_message

# 连接 Broker
client.connect(BROKER, PORT, 60)

# 持续监听消息
client.loop_forever()  # 阻塞式循环