mqttclient.subscribe方法是MQTT客户端订阅主题的方法,使用topic参数指定要订阅的主题,使用qos参数指定订阅主题时所使用的服务质量等级。topic可以是一个字符串,也可以包含通配符来订阅多个主题;qos可以是0、1或2三种级别,用于指定消息传输的可靠性需求。选择合适的topic和qos参数能够确保订阅者可以接收到所需的消息,并满足...
2.3.x 使用的组件 mica-mqtt-client 使用场景 会议室显示屏物联网系统 问题描述(注意:描述不清一句话问题直接关闭) @Transactional(rollbackFor = Exception.class) @MqttClientSubscribe("cc/xx/deviceinfo/+") 大佬, 如果两个注解一起使用是无法实现订阅吗? 把@Transactional删除后没问题...
MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/. - MQTTnet/Samples/Client/Client_Subscribe_Samples.cs at
谢邀。。。好久不用都忘了。。。
public void subscribe(String[] topicFilters, int[] qos) throws MqttException { IMqttToken tok = this.aClient.subscribe(topicFilters, qos, (Object)null, (IMqttActionListener)null); tok.waitForCompletion(this.getTimeToWait()); int[] grantedQos = tok.getGrantedQos(); ...
sub = MqttClient("subscr:{seq}", connect=4) msg = {'topic':"baby/ma/ma",'payload':"The mother of your child(ren)",'retain':True,'qos':1} retain.publish(**msg) sub.subscribe("baby/ma/+", qos=1, read_response=False)
mqttclient.subscribe(["mytopic1","mytopic2"], [0,2],function(qosList){foreach (qosinqosList) server.log("Subscribed QoS = "+ qos); }); An exception will be thrown if you callsubscribe()on anmqttclientinstance that is currently disconnected. ...
mqttClient.connect(function() { if(mqttClient.connected) { mqttClient.subscribe({ filter: "this/+/+/test", callback: function(message) { var uintBuffer = new Uint32Array(message.payload); var firstInt = uintBuffer[0]; Logger.info("got the number: " + firstInt); } }, function (...
在下文中一共展示了MQTTClient.subscribe_time方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。 示例1: print # 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]# 或者: from Adafruit_IO.MQTTClient impor...
您正在调用客户机。函数中的subscribe（）。因此，如果您的esp8266在一次命中中连接到mqtt代理，那么您的...