quartz demo

package com.yh.job;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @author lq
 * 创建时间 2019/4/17 0:00
 **/
public class HelloJob implements Job {

    /**
     * 验证每次调度器运行时，它在调用execute方法前会创建一个新的job实例，当调用完成后，关联的job对象实例会被释放，释放的实例会被垃圾回收机制回收。
     * ps，使用了反射
     */
    public HelloJob(){
        System.out.println("HelloJob init "+new Date());
    }

    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
        System.out.println("正在进行数据备份");
    }
}

package com.yh.scheduler;

import com.yh.job.HelloJob;
import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;

/**
 * @author lq
 * 创建时间 2019/4/17 0:03
 **/
public class HelloSchedulerDemo {

    public static void main(String[] args) throws SchedulerException {
        //JOb
        JobDetail detail = JobBuilder.newJob(HelloJob.class).withIdentity("hello1", "group1").build();

        //Trigger
        SimpleTrigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "triggerGroup1")
                .withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(5).repeatForever()).build();
        //Scheduler

        Scheduler defaultScheduler = StdSchedulerFactory.getDefaultScheduler();

        //调度关联任务和触发器
        defaultScheduler.scheduleJob(detail,trigger);
        defaultScheduler.start();
    }
}