@Target(value={METHOD,ANNOTATION_TYPE}) @Retention(value=RUNTIME) @Documented public @interface Scheduled
cron(), fixedDelay(), or fixedRate()
attributes must be specified.
The annotated method must expect no arguments and have a
void return type.
Processing of @Scheduled annotations is performed by
registering a ScheduledAnnotationBeanPostProcessor. This can be
done manually or, more conveniently, through the <task:annotation-driven/>
element or @EnableScheduling annotation.
EnableScheduling,
ScheduledAnnotationBeanPostProcessor| Modifier and Type | Optional Element and Description |
|---|---|
String |
cron
A cron-like expression, extending the usual UN*X definition to include
triggers on the second as well as minute, hour, day of month, month
and day of week.
|
long |
fixedDelay
Execute the annotated method with a fixed period between the end
of the last invocation and the start of the next.
|
long |
fixedRate
Execute the annotated method with a fixed period between invocations.
|
long |
initialDelay
Number of milliseconds to delay before the first execution of a
fixedRate() or fixedDelay() task. |
public abstract String cron
"0 * * * * MON-FRI" means once per minute on
weekdays (at the top of the minute - the 0th second).CronSequenceGeneratorpublic abstract long fixedDelay
public abstract long fixedRate
public abstract long initialDelay
fixedRate() or fixedDelay() task.