帮我生成springcloud整合rocketmq例子

好的，我可以为您生成springcloud整合rocketmq的例子，以下是示例代码：

@SpringBootApplication
public class RocketMQApplication {

    public static void main(String[] args) {
        SpringApplication.run(RocketMQApplication.class, args);
    }

    @Bean
    public RocketMQTemplate rocketMQTemplate(RocketMQProperties rocketMQProperties) throws MQClientException {
        RocketMQTemplate rocketMQTemplate = new RocketMQTemplate();
        rocketMQTemplate.setProducer(properties2Producer(rocketMQProperties));
        rocketMQTemplate.setDefaultDestination(new RocketMQDestination("example_topic", "*", true));
        return rocketMQTemplate;
    }

    private static DefaultMQProducer properties2Producer(RocketMQProperties rocketMQProperties) throws MQClientException {
        DefaultMQProducer producer = new DefaultMQProducer(rocketMQProperties.getProducerGroupName());
        producer.setNamesrvAddr(rocketMQProperties.getNameServer());
        producer.setInstanceName(rocketMQProperties.getProducerInstanceName());
        producer.setProducerGroup(rocketMQProperties.getProducerGroupName());
        producer.setMaxMessageSize(rocketMQProperties.getMaxMessageSize());
        producer.start();
        return producer;
    }

    @Bean
    @ConditionalOnClass(RocketMQTemplate.class)
    @ConditionalOnMissingBean
    public TransactionMQProducer transactionMQProducer(RocketMQProperties rocketMQProperties) throws MQClientException {
        TransactionMQProducer producer = new TransactionMQProducer(rocketMQProperties.getTransactionProducerGroupName());
        producer.setTransactionListener(new TransactionListenerImpl());
        producer.setNamesrvAddr(rocketMQProperties.getNameServer());
        producer.setInstanceName(rocketMQProperties.getTransactionProducerInstanceName());
        producer.setMaxMessageSize(rocketMQProperties.getMaxMessageSize());
        producer.start();
        return producer;
    }

    @Bean
    public RocketMQMessagingTemplate rocketMQMessagingTemplate(RocketMQTemplate rocketMQTemplate) {
        return new RocketMQMessagingTemplate(rocketMQTemplate);
    }

    @Component
    class TransactionListenerImpl extends TransactionListenerAdapter {

        @Autowired
        private ExampleService exampleService;

        @Override
        public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
            // do some business logic
            exampleService.saveData(arg);
            // return the transaction status
            return LocalTransactionState.COMMIT_MESSAGE;
        }

        @Override
        public LocalTransactionState checkLocalTransaction(MessageExt msg) {
            // check the status of the previous transaction
            boolean success = exampleService.checkStatus(msg);
            if (success) {
                return LocalTransactionState.COMMIT_MESSAGE;
            }
            return LocalTransactionState.UNKNOW;
        }
    }

}

@Service
public class ExampleService {

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    public void sendMessage(String message) {
        rocketMQTemplate.convertAndSend("example_topic", message);
    }

    public void saveData(Object data) {
        // save the data to database or other storage
    }

    public boolean checkStatus(MessageExt msg) {
        // check the status of the previous transaction
    }
}

这是一个简单的RocketMQ整合Spring Cloud的例子，其中包括了使用RocketMQTemplate发送消息、使用事务消息保证业务数据的一致性等。希望可以帮助您理解如何在应用中使用RocketMQ。