SpringBoot集成MQTT

官网配置说明

MQTT Supporticon-default.png?t=N658https://docs.spring.io/spring-integration/reference/html/mqtt.html#mqtt

Spring integration交互逻辑

对于发布者:

  • 消息通过消息网关发送出去,由 MessageChannel 的实例 DirectChannel 处理发送的细节。
  • DirectChannel 收到消息后,内部通过 MessageHandler 的实例 MqttPahoMessageHandler 发送到指定的 Topic。

对于订阅者:

  • 通过注入 MessageProducerSupport 的实例 MqttPahoMessageDrivenChannelAdapter,实现订阅 Topic 和绑定消息消费的 MessageChannel。
  • 同样由 MessageChannel 的实例 DirectChannel 处理消费细节。Channel 消息后会发送给我们自定义的 MqttInboundMessageHandler 实例进行消费。

添加maven依赖

        
            org.springframework.boot
            spring-boot-starter-integration
        
        
            org.springframework.integration
            spring-integration-stream
            5.5.5
        
        
            org.springframework.integration
            spring-integration-mqtt
            5.5.5
        

yaml配置文件

mqtt.username=admin
mqtt.password=123456
mqtt.url=tcp://127.0.0.1:1883
mqtt.client.id=${random.value}
mqtt.default.topic=topic,mqtt/test/#
mqtt.completionTimeout=5000

mqtt生产者消费者配置类

package com.xinghe.tech.user.infrastructure.mqtt;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.core.MessageProducer;
import org.springframework.integration.mqtt.core.DefaultMqttPahoClientFactory;
import org.springframework.integration.mqtt.core.MqttPahoClientFactory;
import org.springframework.integration.mqtt.inbound.MqttPahoMessageDrivenChannelAdapter;
import org.springframework.integration.mqtt.outbound.MqttPahoMessageHandler;
import org.springframework.integration.mqtt.support.DefaultPahoMessageConverter;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.MessageHandler;
import org.springframework.messaging.MessagingException;

import java.util.Arrays;
import java.util.List;

@Configuration
@IntegrationComponentScan
@Slf4j
public class MqttSenderAndReceiveConfig {

    private static final byte[] WILL_DATA;

    static {
        WILL_DATA = "offline".getBytes();
    }

    @Autowired
    private MqttReceiveHandle mqttReceiveHandle;

    @Value("${mqtt.username}")
    private String username;

    @Value("${mqtt.password}")
    private String password;

    @Value("${mqtt.url}")
    private String hostUrl;

    @Value("${mqtt.client.id}")
    private String clientId;

    @Value("${mqtt.default.topic}")
    private String defaultTopic;

    @Value("${mqtt.completionTimeout}")
    private int completionTimeout;   //连接超时

    /**
     * MQTT连接器选项
     **/
    @Bean(value = "getMqttConnectOptions")
    public MqttConnectOptions getMqttConnectOptions1() {
        MqttConnectOptions mqttConnectOptions = 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,这里设置为true表示每次连接到服务器都以新的身份连接
        mqttConnectOptions.setCleanSession(true);
        // 设置超时时间 单位为秒
        mqttConnectOptions.setConnectionTimeout(10);
        mqttConnectOptions.setAutomaticReconnect(true);
        mqttConnectOptions.setUserName(username);
        mqttConnectOptions.setPassword(password.toCharArray());
        mqttConnectOptions.setServerURIs(new String[]{hostUrl});
        // 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心跳判断客户端是否在线,但这个方法并没有重连的机制
        mqttConnectOptions.setKeepAliveInterval(10);
        // 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。
        //mqttConnectOptions.setWill("willTopic", WILL_DATA, 2, false);
        return mqttConnectOptions;
    }

    /**
     * MQTT工厂
     **/
    @Bean
    public MqttPahoClientFactory mqttClientFactory() {
        DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
        factory.setConnectionOptions(getMqttConnectOptions1());
        return factory;
    }

    /**
     * MQTT信息通道(生产者)
     **/
    @Bean
    public MessageChannel mqttOutboundChannel() {
        return new DirectChannel();
    }

    /**
     * MQTT消息处理器(生产者)
     **/
    @Bean
    @ServiceActivator(inputChannel = "mqttOutboundChannel")
    public MessageHandler mqttOutbound() {
        MqttPahoMessageHandler messageHandler = new MqttPahoMessageHandler(clientId + "_producer", mqttClientFactory());
        messageHandler.setAsync(true);
        messageHandler.setDefaultTopic(defaultTopic);
        messageHandler.setAsyncEvents(true); // 消息发送和传输完成会有异步的通知回调
        //设置转换器 发送bytes数据
        DefaultPahoMessageConverter converter = new DefaultPahoMessageConverter();
        converter.setPayloadAsBytes(true);
        return messageHandler;
    }

    /**
     * 配置client,监听的topic
     * MQTT消息订阅绑定(消费者)
     **/
    @Bean
    public MessageProducer inbound() {
        List topicList = Arrays.asList(defaultTopic.trim().split(","));
        String[] topics = new String[topicList.size()];
        topicList.toArray(topics);
        MqttPahoMessageDrivenChannelAdapter adapter =
                new MqttPahoMessageDrivenChannelAdapter(clientId + "_consumer", mqttClientFactory(), topics);
        adapter.setCompletionTimeout(completionTimeout);
        DefaultPahoMessageConverter converter = new DefaultPahoMessageConverter();
        converter.setPayloadAsBytes(true);
        adapter.setConverter(converter);
        adapter.setQos(2);
        adapter.setOutputChannel(mqttInputChannel());
        return adapter;
    }

    /**
     * MQTT信息通道(消费者)
     **/
    @Bean
    public MessageChannel mqttInputChannel() {
        return new DirectChannel();
    }

    /**
     * MQTT消息处理器(消费者)
     **/
    @Bean
    @ServiceActivator(inputChannel = "mqttInputChannel")
    public MessageHandler handler() {
        return new MessageHandler() {
            @Override
            public void handleMessage(Message message) throws MessagingException {
                //处理接收消息
                mqttReceiveHandle.handle(message);
            }
        };
    }
}

消息处理类

package com.xinghe.tech.user.infrastructure.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.springframework.integration.mqtt.support.MqttHeaders;
import org.springframework.messaging.Message;
import org.springframework.stereotype.Component;

/**
 * mqtt客户端消息处理类
 **/
@Slf4j
@Component
public class MqttReceiveHandle {

    public void handle(Message message) {
        log.info("收到订阅消息: {}", message);
        String topic = message.getHeaders().get(MqttHeaders.RECEIVED_TOPIC).toString();
        log.info("消息主题:{}", topic);
    }
}

mqtt发送接口

package com.xinghe.tech.user.infrastructure.mqtt;

import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.integration.mqtt.support.MqttHeaders;
import org.springframework.messaging.handler.annotation.Header;

/**
 * mqtt发送消息
 * (defaultRequestChannel = "mqttOutboundChannel" 对应config配置)
 * **/
@MessagingGateway(defaultRequestChannel = "mqttOutboundChannel")
public interface MqttGateway {

    /**
     * 发送信息到MQTT服务器
     *
     * @param
     */
    void sendToMqttObject(@Header(MqttHeaders.TOPIC) String topic, byte[] payload);

    /**
     * 发送信息到MQTT服务器
     *
     * @param topic 主题
     * @param payload 消息主体
     */
    void sendToMqtt(@Header(MqttHeaders.TOPIC) String topic, String payload);

    /**
     * 发送信息到MQTT服务器
     *
     * @param topic 主题
     * @param qos 对消息处理的几种机制。
     * 0 表示的是订阅者没收到消息不会再次发送,消息会丢失。
     * 1 表示的是会尝试重试,一直到接收到消息,但这种情况可能导致订阅者收到多次重复消息。
     * 2 多了一次去重的动作,确保订阅者收到的消息有一次。
     * @param payload 消息主体
     */
    void sendToMqtt(@Header(MqttHeaders.TOPIC) String topic, @Header(MqttHeaders.QOS) int qos, String payload);

    /**
     * 发送信息到MQTT服务器
     *
     * @param topic 主题
     * @param payload 消息主体
     */
    void sendToMqtt(@Header(MqttHeaders.TOPIC) String topic, Object payload);

    /**
     * 发送信息到MQTT服务器
     *
     * @param topic 主题
     * @param payload 消息主体
     */
    void sendToMqtt(@Header(MqttHeaders.TOPIC) String topic, byte[] payload);
}

mqtt事件监听类

package com.xinghe.tech.user.infrastructure.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.event.EventListener;
import org.springframework.integration.mqtt.event.MqttConnectionFailedEvent;
import org.springframework.integration.mqtt.event.MqttMessageDeliveredEvent;
import org.springframework.integration.mqtt.event.MqttMessageSentEvent;
import org.springframework.integration.mqtt.event.MqttSubscribedEvent;
import org.springframework.stereotype.Component;

@Slf4j
@Component
public class MqttListener {
    /**
     * 连接失败的事件通知
     * @param mqttConnectionFailedEvent
     */
    @EventListener(classes = MqttConnectionFailedEvent.class)
    public void listenerAction(MqttConnectionFailedEvent mqttConnectionFailedEvent) {
        log.info("连接失败的事件通知");
    }

    /**
     * 已发送的事件通知
     * @param mqttMessageSentEvent
     */
    @EventListener(classes = MqttMessageSentEvent.class)
    public void listenerAction(MqttMessageSentEvent mqttMessageSentEvent) {
        log.info("已发送的事件通知");
    }

    /**
     * 已传输完成的事件通知
     * 1.QOS == 0,发送消息后会即可进行此事件回调,因为不需要等待回执
     * 2.QOS == 1,发送消息后会等待ACK回执,ACK回执后会进行此事件通知
     * 3.QOS == 2,发送消息后会等待PubRECV回执,知道收到PubCOMP后会进行此事件通知
     * @param mqttMessageDeliveredEvent
     */
    @EventListener(classes = MqttMessageDeliveredEvent.class)
    public void listenerAction(MqttMessageDeliveredEvent mqttMessageDeliveredEvent) {
        log.info("已传输完成的事件通知");
    }

    /**
     * 消息订阅的事件通知
     * @param mqttSubscribedEvent
     */
    @EventListener(classes = MqttSubscribedEvent.class)
    public void listenerAction(MqttSubscribedEvent mqttSubscribedEvent) {
        log.info("消息订阅的事件通知");
    }
}

接口调用

MqttGateway mqttGateway;

String sendData = "{\"mac\":\"02-00-00-01"\",\"method\":\"switch\",\"data\":{\"channel\":0,\"switch\" :1},\"version\":\"V1.0\"}";
String topic = "iot/gateway/01-00-00-02/ctrl";
mqttGateway.sendToMqtt(topic, sendData);

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