雷达在线注释掉

aijinhui

2024-03-27 d937694a31415d25826d515cb4b6c77974c821fa

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package com.ruoyi.utils.qymqtt.newM;
 
import javax.annotation.PreDestroy;
 
import com.ruoyi.common.utils.spring.SpringUtils;
import com.ruoyi.sy.service.ArdSyCarRtuService;
import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.IMqttClient;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttClientPersistence;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
 
@Slf4j(topic = "mqttCar")
public class EmqClient {
 
    private IMqttClient mqttClient;
 
    private MessageCallback messageCallback;
 
    public EmqClient(String clientId){
        ArdSyCarRtuService carRtuService = SpringUtils.getBean(ArdSyCarRtuService.class);
        //获取电磁锁地址
        String mqttUrl = carRtuService.url("ElectromagneticLockUrl");
        MqttClientPersistence mempersitence = new MemoryPersistence();//持久化方式
        try {
            this.mqttClient = new MqttClient(mqttUrl,clientId,mempersitence);//设置连接broker的host及clientId
            this.messageCallback = new MessageCallback();
        } catch (MqttException e) {
            e.getMessage();
        }
    }
 
 
    //连接broker
    public void connect(){
        MqttConnectOptions options = new MqttConnectOptions();
        options.setAutomaticReconnect(true);
        options.setUserName("admin");
        options.setPassword("xzx12345".toCharArray());
        options.setCleanSession(true);//设置为临时会话
        mqttClient.setCallback(messageCallback);//设置回调
 
        try {
            mqttClient.connect(options);
        } catch (MqttException e) {
            System.out.println("mqtt客户端连接服务端失败");
            e.getMessage();
        }
    }
 
    //断开连接
    @PreDestroy//该注解对象销毁后触发
    public void disConnect(){
        try {
            mqttClient.disconnect();
        } catch (MqttException e) {
            System.out.println("断开连接产生异常");
            e.getMessage();
        }
    }
 
    //重连
    public void reConnect(){
        try {
            mqttClient.reconnect();
        } catch (MqttException e) {
            System.out.println("重连失败,失败原因");
            e.getMessage();
        }
    }
 
    //发布消息  传参为主题，消息，等级，是否保留消息
    public void publish(String topic, String msg, QosEnum qos, boolean retain){
        MqttMessage mqttMessage = new MqttMessage();
        mqttMessage.setPayload(msg.getBytes());
        mqttMessage.setQos(qos.value());
        mqttMessage.setRetained(retain);
        try {
            mqttClient.publish(topic,mqttMessage);
            mqttClient.disconnect();
        } catch (MqttException e) {
            System.out.println("发布消息失败");
            System.out.println("主题:"+topic);
            System.out.println("消息:"+msg);
            System.out.println("qos等级:"+qos.value());
            e.getMessage();
        }
    }
 
    //订阅
    public void subscribe(String topicFilter,QosEnum qos){
        try {
            mqttClient.subscribe(topicFilter,qos.value());
        } catch (MqttException e) {
            System.out.println("订阅主题"+topicFilter+"失败");
            System.out.println("qos等级:"+qos.value());
            e.getMessage();
        }
    }
 
    //取消订阅
    public void unSubscribe(String topicFilter){
        try {
            mqttClient.unsubscribe(topicFilter);
        } catch (MqttException e) {
            System.out.println("取消订阅主题"+topicFilter+"失败");
            e.getMessage();
        }
    }
}