package com.dy.pipIrrApp.workOrder.mqtt;
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import lombok.extern.slf4j.Slf4j;
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import org.eclipse.paho.client.mqttv3.*;
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import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
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/**
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* @author ZhuBaoMin
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* @date 2024-11-16 11:29
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* @LastEditTime 2024-11-16 11:29
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* @Description 初始化一个Mqtt客户端，并根据配置订阅topic
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*/
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@Slf4j
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public class MqttMsgSubscriber {
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public void readSubscribeTopicMessage(){
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try {
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//String broker = "tcp://127.0.0.1:1883";
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//String username = "mqtt_u";
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//String password = "yjy";
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//String topic = "workOrder";
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String broker = "tcp://127.0.0.1:1884";
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String username = "server";
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String password = "1234";
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String topic = "report/#";
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Integer qos = 2;
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String clientId = System.currentTimeMillis() + "";
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MqttClient client = new MqttClient(broker, clientId, new MemoryPersistence());
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// 连接参数
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MqttConnectOptions options = new MqttConnectOptions();
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options.setUserName(username);
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options.setPassword(password.toCharArray());
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//是否清除会话
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options.setCleanSession(true);
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options.setConnectionTimeout(60);
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options.setKeepAliveInterval(60);
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client.setCallback(new MqttCallback() {
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@Override
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public void connectionLost(Throwable throwable) {
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log.error("连接丢失");
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}
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@Override
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public void messageArrived(String s, MqttMessage mqttMessage) throws Exception {
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log.info("topic为: " + topic);
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log.info("qos为: " + mqttMessage.getQos());
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log.info("消息内容为: " + new String(mqttMessage.getPayload()));
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}
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@Override
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public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
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// 当消息被完全传送出去后调用
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log.info("交付完成 ---Delivery complete!");
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// 可以在这里处理一些发送完成后的清理工作
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}
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});
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client.connect(options);
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client.subscribe(topic, qos);
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} catch (MqttException e){
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log.error("MqttMsgSubscriber 连接启动异常：{}", e.getMessage());
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} catch (Exception e){
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log.error("MqttMsgSubscriber 读取消息异常：{}", e.getMessage());
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}
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}
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}
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