使用spring-task定时任务动态配置修改执行时间

package com.seckill.quartz;
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.Component;
import java.text.SimpleDateFormat;
import java.util.Date;
 
/**
 * Created by loup on 2017/11/11.
 */
@Component
@EnableScheduling
public class DynamicScheduledTask implements SchedulingConfigurer {
    //时间表达式  每2秒执行一次
    private String cron = "0/2 * * * * ?";
    private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 
    @Override
    public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
        scheduledTaskRegistrar.addTriggerTask(new Runnable() {
            @Override
            public void run() {
                //任务逻辑
                System.out.println("---------------start-------------------");
                System.out.println("动态修改定时任务参数，时间表达式cron为：" + cron);
                System.out.println("当前时间为：" + sdf.format(new Date()));
                System.out.println("----------------end--------------------");
            }
        }, new Trigger() {
            @Override
            public Date nextExecutionTime(TriggerContext triggerContext) {
                CronTrigger cronTrigger = new CronTrigger(cron);
                Date nextExecDate = cronTrigger.nextExecutionTime(triggerContext);
                return nextExecDate;
            }
        });
    }
 
    public void setCron(String cron) {
        this.cron = cron;
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
 
    <context:component-scan base-package="com.seckill.quartz"/> 
    <task:annotation-driven /> 
</beans>

package com.seckill.quartz;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.io.IOException;
 
/**
 * Created by loup on 2017/11/11.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath*:/conf/spring-quartz.xml"})
public class QuartzTest {
 
    @Autowired
    private DynamicScheduledTask dynamicScheduledTask;
 
    @Test
    public void test1(){
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        dynamicScheduledTask.setCron("0/10 * * * * ?");
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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 * * * * ?";
        //从数据库获得配置的corn表达式
        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() {
                // 任务逻辑
                log.info("task_task_tak");
            }
        }, new Trigger() {
            @Override
            public Date nextExecutionTime(TriggerContext triggerContext) {
                String s = SpringDynamicCronTask();
                // 任务触发，可修改任务的执行周期
                CronTrigger trigger = new CronTrigger(s);
                Date nextExec = trigger.nextExecutionTime(triggerContext);
                return nextExec;
            }
        });  
    }
}