quartz 简单定时器

    org.springframework.boot
    spring-boot-starter-data-jpa
    2.1.8.RELEASE


    org.quartz-scheduler
    quartz
    2.3.0


    org.quartz-scheduler
    quartz-jobs
    2.3.0


    mysql
    mysql-connector-java
    8.0.13

package com.newpwr.wechat.service;

import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;

public class HelloJob implements Job {
    public static void main(String[] args) throws SchedulerException {
        cc();
    }
    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        System.out.println("hello~~~~~~~~~~~~~~~~~~");
    }

    public static void cc() throws SchedulerException {
        //定时器对象
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
        //定义一个工作对象 设置工作名称与组名
        JobDetail job =JobBuilder.newJob(HelloJob.class).withIdentity("job41","group1").build();
        //定义一个触发器 简单Trigger 设置工作名称与组名 5秒触发一次
        // Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1","group1").startNow().withSchedule(SimpleScheduleBuilder.repeatSecondlyForever(5)).build();
        //定义一个任务调度的Trigger 设置工作名称与组名 每天的15:4触发一次
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1","group1").withSchedule(CronScheduleBuilder.cronSchedule("0 4 15 1-31 * ? *")).build();
        //设置工作 与触发器
        scheduler.scheduleJob(job, trigger);
        // and start it off
        //开始定时任务
        scheduler.start();
    }
}