没有ScheduledExecutorService类型的限定bean 的TaskScheduler

Question

这是调度配置

@Configuration
@EnableScheduling
public class RWInventorySchedule {

protected org.slf4j.Logger log = LoggerFactory.getLogger(RWInventorySchedule.class);

@PersistenceContext
private EntityManager entityManager;


   @Bean
   public RWInventoryProcessor constructInventoryProcessor() {
       log.debug("RWInventorySchedule constructs InventoryProcessor, entityManager : {} " , entityManager);
       return new RWInventoryProcessor(entityManager);
    }
}

库存处理器如下

public class RWInventoryProcessor  {
 ...
 @Scheduled(fixedRate = 5000,initialDelay = 3000)
 @Transactional
 public void runProcess() {
   ...
 }
}

在执行期间,在调试日志中获取以下错误

DEBUG org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor - 找不到默认的TaskScheduler bean org.springframework.beans.factory.NoSuchBeanDefinitionException:没有'org.springframework.scheduling.TaskScheduler'类型的限定bean可用

...
DEBUG org.springframework. scheduling.annotation.ScheduledAnnotationBeanPostProcessor - 找不到默认的ScheduledExecutorService bean org.springframework.beans.factory.NoSuchBeanDefinitionException:没有类型为'java.util.concurrent.ScheduledExecutorService'的限定bean

我错过了什么

Answer 1

如果您正在使用Java配置,则需要针对要使用的调度程序类型的@Bean定义.Spring没有这个默认bean.例如

@Bean
public TaskScheduler taskScheduler() {
    return new ConcurrentTaskScheduler(); //single threaded by default
}