package com.zqf.marketing.task;  
import com.zqf.db.marketingrobot.sys.model.RobotSysSwitch;
import com.zqf.marketing.sys.service.SwitchService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
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.CronTrigger;
import org.springframework.stereotype.Service; 
import java.util.Date;
 
/**
 * @author zhenghao
 * @description
 * @date 2019/1/22 21:50
 */
 
@Lazy(false)
@Service
@EnableScheduling
public class TestTaskService implements SchedulingConfigurer { 
    private static Logger log = LoggerFactory.getLogger(TestTaskService.class);
    @Autowired
    private SwitchService switchService; 
 
    private String SpringDynamicCronTask() {
        String cron = "0/5 * * * * ?";
        //從數(shù)據(jù)庫(kù)獲得配置的corn表達(dá)式
        RobotSysSwitch switchById = switchService.getSwitchById(5L);
        cron = switchById.getSwitchFlag();
        log.info(cron);
        return cron;
    } 
 
    @Override
    public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
        scheduledTaskRegistrar.addTriggerTask(new Runnable() {
            @Override
            public void run() {
                // 任務(wù)邏輯
                log.info("task_task_tak");
            }
        }, new Trigger() {
            @Override
            public Date nextExecutionTime(TriggerContext triggerContext) {
                String s = SpringDynamicCronTask();
                // 任務(wù)觸發(fā)，可修改任務(wù)的執(zhí)行周期
                CronTrigger trigger = new CronTrigger(s);
                Date nextExec = trigger.nextExecutionTime(triggerContext);
                return nextExec;
            }
        });  
    }
}

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);
}