Option 1: Using a post processor
为应停止调度的bean 提供ScheduledAnnotationBeanPostProcessor并显式调用postProcessBeforeDestruction(Object bean, String beanName)。
Option 2: Maintaining a map of target beans to its Future
private final Map<Object, ScheduledFuture<?>> scheduledTasks =
new IdentityHashMap<>();
@Scheduled(fixedRate = 2000)
public void fixedRateJob() {
System.out.println("Something to be done every 2 secs");
}
@Bean
public TaskScheduler poolScheduler() {
return new CustomTaskScheduler();
}
class CustomTaskScheduler extends ThreadPoolTaskScheduler {
@Override
public ScheduledFuture<?> scheduleAtFixedRate(Runnable task, long period) {
ScheduledFuture<?> future = super.scheduleAtFixedRate(task, period);
ScheduledMethodRunnable runnable = (ScheduledMethodRunnable) task;
scheduledTasks.put(runnable.getTarget(), future);
return future;
}
@Override
public ScheduledFuture<?> scheduleAtFixedRate(Runnable task, Date startTime, long period) {
ScheduledFuture<?> future = super.scheduleAtFixedRate(task, startTime, period);
ScheduledMethodRunnable runnable = (ScheduledMethodRunnable) task;
scheduledTasks.put(runnable.getTarget(), future);
return future;
}
}
当必须停止Bean的调度时，可以查找该映射以获取Future与之对应的映射并显式取消它。
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