使用quartz-scheduler实现定时任务

首先pom.xml文件中添加依赖：

<dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.3.0</version>
</dependency>

下面是一个实现定时任务的demo：
private static final int TIME = 2;

public void startAutoJob() throws Exception{
        /*
         *在 Quartz 中， scheduler 由 scheduler 工厂创建：DirectSchedulerFactory 或者 StdSchedulerFactory。第二种工厂 StdSchedulerFactory 使用较多，
         *因为 DirectSchedulerFactory 使用起来不够方便，需要作许多详细的手工编码设置。
         */
        // 获取Scheduler实例
        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
        scheduler.start();
        System.out.println("scheduler.start");

        //具体任务.
        JobDetail jobDetail = JobBuilder.newJob(WeatherDataSyncJob.class).withIdentity("job1","group1").build();

        //触发时间点. (每5秒执行1次.)
        SimpleScheduleBuilder simpleScheduleBuilder = SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(TIME).repeatForever();
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1","group1").startNow().withSchedule(simpleScheduleBuilder).build();

        // 交由Scheduler安排触发
        scheduler.scheduleJob(jobDetail,trigger);

        //睡眠20秒.
        //TimeUnit.SECONDS.sleep(20);
        //scheduler.shutdown();//关闭定时任务调度器.
        //System.out.println("scheduler.shutdown");
    }

具体执行定时任务的类代码如下：

public class WeatherDataSyncJob extends QuartzJobBean {

    private final static Logger logger = LoggerFactory.getLogger(WeatherDataSyncJob.class);

    //@Autowired
    //private WeatherDataService weatherDataService;
    /* (non-Javadoc)
     * @see org.springframework.scheduling.quartz.QuartzJobBean#executeInternal(org.quartz.JobExecutionContext)
     */
    @Override
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
        logger.info("Weather Data Sync Job. Start！");
        }
}

执行startAutoJob方法后每隔2秒钟就会打印执行类中的日志。