Spring scheduler -获取下一事件的时间

import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.concurrent.ScheduledFuture;

@Component
public class SchedulerExample {

    private final TaskScheduler taskScheduler;

    public SchedulerExample(TaskScheduler taskScheduler) {
        this.taskScheduler = taskScheduler;
    }

    @Scheduled(fixedRate = 5000) // 每5秒执行一次
    public void scheduledTask() {
        System.out.println("Task executed at: " + new Date());

        // 获取下一事件的时间
        ScheduledFuture<?> future = taskScheduler.schedule(() -> {}, System.currentTimeMillis() + 5000);
        System.out.println("Next task will execute at: " + new Date(future.getDelay(TimeUnit.MILLISECONDS)));
    }
}