【SpringBoot集成MQTT实现消息推送】

    	    <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-mqtt</artifactId>
        </dependency>
    
    
      
      
      
      
    
    AI写代码

    mqtt:
      username: admin
      password: admin
      url: tcp://127.0.0.1:1883
      client-id: clientid-dev
      completionTimeout: 3000
    
    
      
      
      
      
      
      
    
    AI写代码

    import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
    import org.springframework.beans.factory.annotation.Value;
    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.mqtt.core.DefaultMqttPahoClientFactory;
    import org.springframework.integration.mqtt.core.MqttPahoClientFactory;
    import org.springframework.integration.mqtt.outbound.MqttPahoMessageHandler;
    import org.springframework.messaging.MessageChannel;
    import org.springframework.messaging.MessageHandler;
    
    /** * 〈一句话功能简述〉<br>
     *  * 〈MQTT发送消息配置〉
     * * @author JIANGMING
     * @since 2022/2/19 0019 16:29
     **/
    @Configuration
    @IntegrationComponentScan
    public class MqttSenderConfig {
     
    @Value("${mqtt.username}")
    private String username;
     
    @Value("${mqtt.password}")
    private String password;
     
    @Value("${mqtt.url}")
    private String hostUrl;
     
    @Bean
    public MqttConnectOptions getMqttConnectOptions(){
        MqttConnectOptions mqttConnectOptions=new MqttConnectOptions();
        mqttConnectOptions.setUserName(username);
        mqttConnectOptions.setPassword(password.toCharArray());
        mqttConnectOptions.setServerURIs(new String[]{hostUrl});
        mqttConnectOptions.setKeepAliveInterval(2);
        return mqttConnectOptions;
    }
    @Bean
    public MqttPahoClientFactory mqttClientFactory() {
        DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
        factory.setConnectionOptions(getMqttConnectOptions());
        return factory;
    }
    @Bean
    @ServiceActivator(inputChannel = "mqttOutboundChannel")
    public MessageHandler mqttOutbound() {
        String clientId = "h-backend-mqtt-out-" + System.currentTimeMillis();
        MqttPahoMessageHandler messageHandler =  new MqttPahoMessageHandler(clientId, mqttClientFactory());
        messageHandler.setAsync(true);
        messageHandler.setDefaultQos(2);
        messageHandler.setDefaultTopic("/default/mqtt/topic/foo");
        return messageHandler;
    }
    @Bean
    public MessageChannel mqttOutboundChannel() {
        return new DirectChannel();
    }
    }
    
    
    
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
    
    AI写代码

    import org.springframework.integration.annotation.MessagingGateway;
    import org.springframework.integration.mqtt.support.MqttHeaders;
    import org.springframework.messaging.handler.annotation.Header;
    
    @MessagingGateway(defaultRequestChannel = "mqttOutboundChannel")
    public interface MqttGateway {
    void sendToMqtt(@Header(MqttHeaders.TOPIC) String topic, String data);
    }
    
    
      
      
      
      
      
      
      
      
    
    AI写代码

    @Resource
    private MqttGateway mqttMessageSender;
    
    mqttMessageSender.sendToMqtt("/sys/ping/"+farmManageId,StringUtils.toJson(map));
    
    
      
      
      
      
    
    AI写代码