1.2-Quartz大哥(简单使用)

一.准备

  <dependency>
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz</artifactId>
    <version>2.2.1</version>
  </dependency>
  <dependency>
    <groupId>org.quartz-scheduler</groupId>
    <artifactId>quartz-jobs</artifactId>
    <version>2.2.1</version>
  </dependency>   

二.简单使用

HelloJob类

public class HelloJob implements Job {

    public void execute(JobExecutionContext context) throws JobExecutionException {
        //打印当前的执行之间,格式为2017-01-01 00:00:00
        Date date = new Date();
        SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        System.out.println("Current Exec Time is : " + sf.format(date));
        //编写具体的业务逻辑
        System.out.println("Hello World!");
    }
}

HelloScheduler类

public class HelloScheduler {
    public static void main(String[] args) {
        //创建一个JobDetail实例,将该实例与HelloJob Class绑定
        JobDetail jobDetail = JobBuilder.newJob(HelloJob.class).withIdentity("myJob", "JobGroup1").build();
        //创建一个Trigger实例,用来触发Job来执行的
        //立即执行,并且每隔两秒执行一次
        Trigger trigger = TriggerBuilder.newTrigger()
                .withIdentity("myTrigger", "TriggerGroup1")
                .startNow()
                .withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(2)
                        .repeatForever())
                .build();
        //创建scheduler实例,有很多工厂,这个是最简单的
        SchedulerFactory sfact = new StdSchedulerFactory();
        try {
            Scheduler scheduler = sfact.getScheduler();
            scheduler.start();
            //打印当前的执行时间
            Date date = new Date();
            SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            System.out.println("Current Exec Time is:" + sf.format(date));
            scheduler.scheduleJob(jobDetail, trigger);
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }
}