错误

调试SpringBoot定时任务的时候，启动服务报错

Caused by: java.lang.IllegalStateException: Encountered invalid @Scheduled method 'xxx': Only no-arg methods may be annotated with @Scheduled
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.processScheduled(ScheduledAnnotationBeanPostProcessor.java:511) ~[spring-context-5.3.9.jar:5.3.9]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.lambda$null$1(ScheduledAnnotationBeanPostProcessor.java:374) ~[spring-context-5.3.9.jar:5.3.9]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_221]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.lambda$postProcessAfterInitialization$2(ScheduledAnnotationBeanPostProcessor.java:374) ~[spring-context-5.3.9.jar:5.3.9]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:1.8.0_221]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.postProcessAfterInitialization(ScheduledAnnotationBeanPostProcessor.java:373) ~[spring-context-5.3.9.jar:5.3.9]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:437) ~[spring-beans-5.3.9.jar:5.3.9]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790) ~[spring-beans-5.3.9.jar:5.3.9]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.9.jar:5.3.9]

原因

@Scheduled 注解标注的方法不能有参数

注意

一定要在服务启动类上加上@EnableScheduling注解，如果要开启异步任务的话还要加上@EnableAsync这个注解。

@EnableScheduling
@EnableAsync