使用Spring集成将字符串从mqtt转换为Object

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-mqtt</artifactId>
</dependency>

spring.mqtt.username=your_username
spring.mqtt.password=your_password
spring.mqtt.url=tcp://mqtt_broker_url:1883

@Component
public class MqttMessageHandler {

    @ServiceActivator(inputChannel = "mqttInputChannel")
    public void handleMessage(String message) {
        // 进行字符串到Object的转换
        Object obj = convertToObject(message);
        // 处理转换后的Object
        processObject(obj);
    }

    private Object convertToObject(String message) {
        // 实现将字符串转换为Object的逻辑
        // ...
    }

    private void processObject(Object obj) {
        // 处理转换后的Object的逻辑
        // ...
    }
}

@Configuration
@EnableIntegration
public class IntegrationConfig {

    @Autowired
    private MqttMessageHandler mqttMessageHandler;

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

    @Bean
    public MessageProducer mqttInbound() {
        MqttPahoMessageDrivenChannelAdapter adapter =
                new MqttPahoMessageDrivenChannelAdapter("mqttInputChannel", mqttClientFactory(),
                        "topic1", "topic2", "topic3"); // 订阅的MQTT主题
        adapter.setCompletionTimeout(5000);
        adapter.setConverter(new DefaultPahoMessageConverter());
        adapter.setQos(1);
        return adapter;
    }

    @Bean
    public DefaultMqttPahoClientFactory mqttClientFactory() {
        DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
        factory.setUserName("${spring.mqtt.username}");
        factory.setPassword("${spring.mqtt.password}");
        factory.setServerURIs("${spring.mqtt.url}");
        return factory;
    }

    @Bean
    public IntegrationFlow mqttInboundFlow() {
        return IntegrationFlows.from(mqttInbound())
                .handle(mqttMessageHandler)
                .get();
    }
}

@Autowired
private MessageChannel mqttInputChannel;

public void sendMessage(String message) {
    mqttInputChannel.send(MessageBuilder.withPayload(message).build());
}