mqtt-test/test02/src/main/java/com/huimv/publish/PublishMQTT.java

package com.huimv.publish;

import com.huimv.entity.Device;
import com.huimv.entity.People;
import com.huimv.service.IDeviceService;
import com.huimv.service.IPeopleService;
import com.huimv.service.impl.DeviceServiceImpl;
import com.huimv.untils.SpringUtil;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;

import java.util.List;

@Configuration
public class PublishMQTT {

    @Autowired
    private IPeopleService peopleService;
    @Autowired
    private IDeviceService deviceService;

    public static final String HOST = "tcp://192.168.1.68:1883";
    private static final String clientid = "publish";
    private MqttClient client;
    private MqttConnectOptions options;

    private String userName = "admin";    //非必须
    private String passWord = "admin";  //非必须

    public void start() {
        try {
            // host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
            client = new MqttClient(HOST, clientid, new MemoryPersistence());
            // MQTT的连接设置
            options = new MqttConnectOptions();
            // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，设置为true表示每次连接到服务器都以新的身份连接
            options.setCleanSession(true);
            // 设置连接的用户名
            options.setUserName(userName);
            // 设置连接的密码
            options.setPassword(passWord.toCharArray());
            // 设置超时时间 单位为秒
            options.setConnectionTimeout(10);
            // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
            options.setKeepAliveInterval(20);
            //设置断开后重新连接
            options.setAutomaticReconnect(true);
            // 设置回调

            //client.setCallback(new PushCallback());
//            MqttTopic topic = client.getTopic(TOPIC1);
            //遗嘱
           // options.setWill(topic, "关闭前最后的信息".getBytes(), 1, true);
            client.connect(options);

            DeviceServiceImpl deviceService = SpringUtil.getBean(DeviceServiceImpl.class);
            List<Device> list = deviceService.list();
            System.out.println(list);
            pubMessage("list","huimv_down_867699060002756");
            //向client2发送消息
//            pubMessage("张三,20,男","test");
//            client.unsubscribe("/test/01");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 消息发送
     * @param message
     * @param topic
     */
    public  void pubMessage(String message,String topic){
        MqttMessage mess = new MqttMessage();
        mess.setQos(1);
        mess.setRetained(true);
        mess.setPayload(message.getBytes());
        try {
            client.publish(topic, mess);
        } catch (Exception e) {
            //LOGGER.error(e.getLocalizedMessage());
        }
    }

    public static void main(String[] args) {
        PublishMQTT client1 = new PublishMQTT();
        client1.start();
    }
}