添加打印

mqtt_binding/mqtt_client/mqtt_client.go

@@ -170,6 +170,8 @@ func (c *MqttClient) onConnect() error {
 					return token.Error()
 				}
 
+				fmt.Println("[MQTT] Subscribe Topic: " + item.Topic)
+
 				return nil
 			})
 			if err != nil {