一：初窥 Quartz

最新推荐文章于 2024-04-23 17:15:00 发布

原创最新推荐文章于 2024-04-23 17:15:00 发布 · 1k 阅读

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这篇博客介绍了Quartz的基本用法，通过ExampleJob和HelloJob的例子展示了如何设置定时任务，执行间隔为5秒，每次执行HelloJob的execute方法。文章旨在帮助读者对Quartz有一个初步的理解。

首先跟大家分享一个简单地 Quartz 的例子，让大家首先对 Quartz 有一个初步的认识

ExampleJob

import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

public class ExampleJob {
    public static void main(String[] args) throws Exception {

        SchedulerFactory schedFact = new StdSchedulerFactory();

        Scheduler sched = schedFact.getScheduler();

        sched.start();

        JobDetail job = JobBuilder.newJob(HelloJob.class)
                .withIdentity("dummyJobName", "group1").build();

        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("dummyTriggerName", "group1")
                .withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(5).repeatForever()).build();

        sched.scheduleJob(job, trigger);
    }

}

HelloJob

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

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

public class HelloJob implements Job {

    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+"Hello Quartz!"); 
    }

}