Stringcontent="Will Message";byte[] payload = content.getBytes();MqttMessagemessage=newMqttMessage(payload);MqttConnectionOptionsoptions=newMqttConnectionOptions(); options.setUserName(USERNAME); options.setPassword(PASSWORD.getBytes());// 设置遗嘱消息。options.setWill(topic, message);// 设置遗嘱延迟。
Stringcontent="Will Message";byte[] payload = content.getBytes();MqttMessagemessage=newMqttMessage(payload);MqttConnectionOptionsoptions=newMqttConnectionOptions(); options.setUserName(USERNAME); options.setPassword(PASSWORD.getBytes());// 设置遗嘱消息。options.setWill(topic, message);// 设置遗嘱延迟。
通常在定义 MQTTClient_connectOptions 对象时会使用 MQTTClient_connectOptions_initializer 宏对其进行初始化操作;而在定义 MQTTClient_willOptions 对象时使用 MQTTClient_willOptions_initializer 宏对其初 始化。 4、设置回调函数 调用MQTTClient_setCallbacks 函数为应用程序设置回调函数,MQTTClient_setCallbacks 可设...
通常在定义 MQTTClient_connectOptions 对象时会使用 MQTTClient_connectOptions_initializer 宏对其进行初始化操作;而在定义 MQTTClient_willOptions 对象时使用 MQTTClient_willOptions_initializer 宏对其初 始化。 4、设置回调函数 调用MQTTClient_setCallbacks 函数为应用程序设置回调函数,MQTTClient_setCallbacks 可设...
(3);//设置心跳时间间隔options.setKeepAliveInterval(3);//设置服务器是否应该记住重新连接时客户端的状态options.setCleanSession(true);mqttClient.connect(options);//设置消息发送后的回调方法mqttClient.setCallback(new MqttCallbackImpl());//通过字符串获取MqttTopic类型的主题topic = mqttClient.getTopic(t...
mMqttConnectOptions.setKeepAliveInterval(20); //设置心跳包发送间隔,单位:秒 mMqttConnectOptions.setUserName(USERNAME); //设置用户名 mMqttConnectOptions.setPassword(PASSWORD.toCharArray()); //设置密码 // last will message boolean doConnect = true; ...
options.setKeepAliveInterval(20); // 设置“遗嘱”消息的话题,若客户端与服务器之间的连接意外中断,服务器将发布客户端的“遗嘱”消息。 //options.setWill("willTopic", WILL_DATA, 2, false); return options; } @Bean public MqttPahoClientFactory mqttClientFactory() { ...
// options.setWill("willTopic", WILL_DATA, 2, false); return options; } } springboot项目中集成框架,有消息入站通道(用来接收消息)和出站通道(用来发送消息) 2.3. 发布消息配置 package com.mqttpush.config; import com.mqttpush.constant.MqttConstant; ...
(20);//设置遗嘱消息的话题,若客户端和服务器之间的连接意外断开,服务器将发布客户端的遗嘱信息options.setWill("willTopic",(clientId+"与服务器断开连接").getBytes(),0,false);//设置回调client.setCallback(newMqttProviderCallBack());client.connect(options);}catch(MqttException e){e.printStackTrace()...
wsOptions: is the WebSocket connection options. Default is{}. It's specific for WebSockets. For possible options have a look at:https://github.com/websockets/ws/blob/master/doc/ws.md. keepalive:60seconds, set to0to disable reschedulePings: reschedule ping messages after sending packets (def...