Springboot开启事务的支持

@SpringBootApplication
@EnableTransactionManagement//开启事物的管理支持
public class Application {

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

}

@Service
public class DriverServiceImpl implements DriverService {

    @Autowired
    private DMMapper dmMapper;

    @Override
    @Transactional  //事物管理的方法，如果这个方法抛出异常，事务就会回滚
    public DM getDMById(Integer id) {
        return dmMapper.selectById(id);
    }

}