Kafka 事务消息

1、Kafka 事务消息通过配置文件设置开启，设置方法如下：

transaction-id-prefix: transaction-id-

2、使用@Transactional 注解，在类或者方法上使用

public interface SendMessageService {
    
    void sendTransactionMessage(String message);
}

@Service
@Transactional(rollbackFor = Exception.class)
public class SendMessageServiceImpl implements SendMessageService {

    @Resource
    private KafkaTemplate kafkaTemplate;

    @Override
    public void sendTransactionMessage(String message) {
        System.out.println(message);
        for (int i = 1; i < 10; i++) {
            OrderMsg orderMsg = new OrderMsg(i+"", i+"-"+message);
            kafkaTemplate.send("topic08", orderMsg);
            kafkaTemplate.flush();
            if (i==5) {
                int j = 1/0;
            }
        }

    }
}

3、实现一个接口，方便进行测试

@GetMapping("/user/transaction/{message}")
public void sendTransactionUserMessage(@PathVariable("message") String message) {
    sendMessageService.sendTransactionMessage(message);
}