Quartz第一个小程序

一、构建maven项目

1、在pom.xml中引入jar包

 <!--引入quartz依赖-->
        <!-- https://mvnrepository.com/artifact/org.quartz-scheduler/quartz -->
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz-jobs</artifactId>
            <version>2.3.0</version>
        </dependency>
        <!--引入quartz依赖 END-->

二、创建两个类

1、QuartzTest01.class

public class QuartzTest01 {

    public static void main(String[] args) throws SchedulerException {
        // 创建JobDetail作业信息
        JobDetail jobDetail = JobBuilder.newJob(MyJob.class)
                .withDescription("this is a test job")
                .withIdentity("testJob","testGroup")
                .build();

        // 向任务传递数据
        JobDataMap jobDataMap = jobDetail.getJobDataMap();
        jobDataMap.put("uname","张三");
        jobDataMap.put("uage",16);

        //任务运行的时间，SimpleSchedle 类型触发器有效
        long time = System.currentTimeMillis() + 3 * 1000L; // 三秒后启动任务
        Date startTime = new Date(time);

        // 创建Trigger，使用SimpleScheduleBuilder 或者 CronScheduleBuilder
        Trigger trigger = TriggerBuilder.newTrigger()
                .withDescription("")
                .withIdentity("ramTrigger", "ramTriggerGroup")
                .startAt(startTime)  //默认当前时间启动
                //普通计时器
                .withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(3).withRepeatCount(3))//间隔3秒，重复3次
                //表达式计时器
                //.withSchedule(CronScheduleBuilder.cronSchedule("0/3 * * * * ?")) //3秒执行一次
                .build();

        // 创建Scheduler工厂
        SchedulerFactory schedulerFactory = new StdSchedulerFactory();

        // 从工厂中获取调度器实例
        Scheduler scheduler = schedulerFactory.getScheduler();

        //注册任务和定时器

        scheduler.scheduleJob(jobDetail,trigger);

        //启动 调度器
        scheduler.start();
    }
}

2.MyJob.class

public class MyJob implements Job {
    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        Date date = new Date();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        System.out.println("定时器任务执行:" + simpleDateFormat.format(date));
        JobDataMap map=jobExecutionContext.getMergedJobDataMap();
        System.out.println("参数值"+map.get("uname"));
        System.out.println("參數值"+map.get("uage"));
    }
}