springboot整合rabbitmq的mqtt

Spring Boot可以使用Spring Integration和Spring AMQP来集成RabbitMQ和MQTT。

首先，你需要在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-mqtt</artifactId>
    <version>5.5.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.amqp</groupId>
    <artifactId>spring-rabbit</artifactId>
    <version>2.3.11.RELEASE</version>
</dependency>

接下来，你需要配置RabbitMQ和MQTT的连接工厂。可以使用以下示例配置：

@Bean
public ConnectionFactory connectionFactory() {
    CachingConnectionFactory connectionFactory = new CachingConnectionFactory("localhost");
    connectionFactory.setUsername("guest");
    connectionFactory.setPassword("guest");
    return connectionFactory;
}

@Bean
public MqttPahoClientFactory mqttClientFactory() {
    DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
    MqttConnectOptions options = new MqttConnectOptions();
    options.setServerURIs(new String[]{"tcp://localhost:1883"});
    options.setUserName("guest");
    options.setPassword("guest".toCharArray());
    factory.setConnectionOptions(options);
    return factory;
}

然后，你需要创建一个MQTT通道适配器和RabbitMQ通道适配器。可以使用以下示例配置：

@Bean
public MessageChannel mqttInputChannel() {
    return new DirectChannel();
}

@Bean
public MessageProducer inbound() {
    MqttPahoMessageDrivenChannelAdapter adapter =
            new MqttPahoMessageDrivenChannelAdapter("testClient",
                    mqttClientFactory(),
                    "testTopic");
    adapter.setCompletionTimeout(5000);
    adapter.setConverter(new DefaultPahoMessageConverter());
    adapter.setQos(1);
    adapter.setOutputChannel(mqttInputChannel());
    return adapter;
}

@Bean
public AmqpTemplate amqpTemplate() {
    return new RabbitTemplate(connectionFactory());
}

@Bean
public RabbitMQMessageHandler rabbitMessageHandler() {
    return new RabbitMQMessageHandler(amqpTemplate());
}

@Bean
public MessageChannel rabbitmqOutputChannel() {
    return new DirectChannel();
}

@Bean
public MessageProducer outbound() {
    AmqpOutboundEndpoint endpoint = new AmqpOutboundEndpoint(rabbitMessageHandler());
    endpoint.setExpectReply(false);
    endpoint.setOutputChannel(rabbitmqOutputChannel());
    return endpoint;
}

最后，你需要将消息从MQTT通道适配器发送到RabbitMQ通道适配器。可以使用以下示例配置：

@Bean
public IntegrationFlow mqttToRabbitFlow() {
    return IntegrationFlows.from(mqttInputChannel())
            .transform(String.class, String::toUpperCase)
            .handle(outbound())
            .get();
}

这样，在发送到MQTT主题“testTopic”的消息时，将在RabbitMQ中创建一个队列并将消息路由到该队列。

希望这可以帮助你整合RabbitMQ和MQTT。