Could not obtain transaction-synchronized Session for current thread 报错在spring注解定时任务上的处理

昨天用spring的注解写了一个定时任务，处理超时订单置为失效的。刚开始这样写的

@Service
public class CheckTimeoutCbosJob {

     //

     @Autowired
    private CbosMainOrderService cbosMainOrderService;

 List<CbosMainOrder> list=cbosMainOrderService.findTimeOutOrder(DAY);//这一行就报错，内容就是Could not obtain transaction-synchronized Session for current thread

}

最终在类上面加上@Transactional就好了，如下

@Service
@Transactional
public class CheckTimeoutCbosJob {