import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.TriggerContext;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.PeriodicTrigger;
import org.springframework.stereotype.Component; 
import java.util.Date; 
 
@Component
@EnableScheduling
public class DynamicScheduleTaskSecond implements SchedulingConfigurer {
    private static final long WEEK_MILLIS = 604800000;
    private static final long MIN_MILLIS = 1000;
    private static long period = 1000;
    static long l = System.currentTimeMillis();
 
    @Autowired
    SetPeriod setPeriod; 
    public static long getPeriod() {
        return period;
    }
 
    public static void setPeriod(long period) {
        DynamicScheduleTaskSecond.period = period;
    }
 
    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.addTriggerTask(new Runnable() {
            @Override
            public void run() {
                try {
                    setPeriod.update(period);
                    System.out.println("abc");
                    Long last = System.currentTimeMillis() - l;
                    l = System.currentTimeMillis();
                    System.out.println(last);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }, new Trigger() {
            @Override
            public Date nextExecutionTime(TriggerContext triggerContext) {
                if (period < MIN_MILLIS || period > WEEK_MILLIS)
                    period = MIN_MILLIS;
                PeriodicTrigger periodicTrigger = new PeriodicTrigger(period);
                Date nextExecDate = periodicTrigger.nextExecutionTime(triggerContext);
                return nextExecDate;
            }
        });
    }
}

  
import org.springframework.stereotype.Component; 
@Component
public class SetPeriod { 
    private static Long maxPeriod = 1000l; 
    public void update(Long period) {
        maxPeriod += 1000;
        setScheduleConfig(maxPeriod);
    }
 
    public boolean setScheduleConfig(Long period) {
        DynamicScheduleTaskSecond.setPeriod(period);
        return true;
    }
}

@FunctionalInterface
public interface SchedulingConfigurer {
 
 /**
  * Callback allowing a {@link org.springframework.scheduling.TaskScheduler
  * TaskScheduler} and specific {@link org.springframework.scheduling.config.Task Task}
  * instances to be registered against the given the {@link ScheduledTaskRegistrar}.
  * @param taskRegistrar the registrar to be configured.
  */
 void configureTasks(ScheduledTaskRegistrar taskRegistrar); 
}

    public void addTriggerTask(Runnable task, Trigger trigger) {
        this.addTriggerTask(new TriggerTask(task, trigger));
    }

public interface Trigger {
    @Nullable
    Date nextExecutionTime(TriggerContext var1);
}

@Component
public class ScheduledTasks {
    @Autowired
    private ActivityService activityService;
//    1000即1s
    @Scheduled(fixedRate = 1000)
    public void reportCurrentTime() {
        System.out.println("當(dāng)前時(shí)間: " + DateUtil.getNow());
        log.info("打印當(dāng)前時(shí)間: {}.", DateUtil.getNow());
    }
    /*每天四點(diǎn)更新一次*/
    @Scheduled(cron = "0 0 4 * * ? ")
    public void updateRankLIstToRedis() {
        /* redis超時(shí)設(shè)置 expire多次設(shè)置會(huì)覆蓋 */
        List<RankInfoDTO> list = activityService.countRankList(ACTIVITY_WEB);
    }
}