1、專案啟動時、spring容器 解析bean 裝配到工廠中___

/**
     * 定時任務配置
     */
    @Configuration
    public class ScheduleConfig {
    
        @Bean
        public SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource) {
            SchedulerFactoryBean factory = new SchedulerFactoryBean();
            factory.setDataSource(dataSource);
    
            //quartz引數
            Properties prop = new Properties();
            prop.put("org.quartz.scheduler.instanceName", "RenrenScheduler");
            prop.put("org.quartz.scheduler.instanceId", "AUTO");
            //執行緒池配置
            prop.put("org.quartz.threadPool.class", "org.quartz.simpl.SimpleThreadPool");
            prop.put("org.quartz.threadPool.threadCount", "20");
            prop.put("org.quartz.threadPool.threadPriority", "5");
            //JobStore配置
            prop.put("org.quartz.jobStore.class", "org.quartz.impl.jdbcjobstore.JobStoreTX");
            //叢集配置
            prop.put("org.quartz.jobStore.isClustered", "true");
            prop.put("org.quartz.jobStore.clusterCheckinInterval", "15000");
            prop.put("org.quartz.jobStore.maxMisfiresToHandleAtATime", "1");
    
            prop.put("org.quartz.jobStore.misfireThreshold", "12000");
            prop.put("org.quartz.jobStore.tablePrefix", "QRTZ_");
            prop.put("org.quartz.jobStore.selectWithLockSQL", "SELECT * FROM {0}LOCKS UPDLOCK WHERE LOCK_NAME = ?");
    
            //PostgreSQL資料庫，需要開啟此註釋
            //prop.put("org.quartz.jobStore.driverDelegateClass", "org.quartz.impl.jdbcjobstore.PostgreSQLDelegate");
    
            factory.setQuartzProperties(prop);
    
            factory.setSchedulerName("RenrenScheduler");
            //延時啟動
            factory.setStartupDelay(30);
            factory.setApplicationContextSchedulerContextKey("applicationContextKey");
            //可選，QuartzScheduler 啟動時更新己存在的Job，這樣就不用每次修改targetObject後刪除qrtz_job_details表對應記錄了
            factory.setOverwriteExistingJobs(true);
            //設定自動啟動，預設為true
            factory.setAutoStartup(true);
    
            return factory;
        }
    }
 

2、此時任務排程中心已經建立、需要繫結觸發器__初始化觸發器、專案啟動時載入

@Autowired
    private Scheduler scheduler;
	上述物件已存在工廠中、隨時可以取出來使用_________
	/**
	 * 專案啟動時，初始化定時器
	 */
	@PostConstruct
	public void init(){
		List<ScheduleJobEntity> scheduleJobList = this.selectList(null);
		for(ScheduleJobEntity scheduleJob : scheduleJobList){
			CronTrigger cronTrigger = ScheduleUtils.getCronTrigger(scheduler, scheduleJob.getJobId());
            //如果不存在，則建立
            if(cronTrigger == null) {
                ScheduleUtils.createScheduleJob(scheduler, scheduleJob);
            }else {
                ScheduleUtils.updateScheduleJob(scheduler, scheduleJob);
            }
		}
	}
 

3、定時任務工具類、負責對排程中心scheduler 中任務的建立、啟動、暫停、恢復等一系列的管理___

/**
 * 定時任務工具類
 */
public class ScheduleUtils {
    private final static String JOB_NAME = "TASK_";
    
    /**
     * 獲取觸發器key
     */
    public static TriggerKey getTriggerKey(Long jobId) {
        return TriggerKey.triggerKey(JOB_NAME + jobId);
    }
    
    /**
     * 獲取jobKey
     */
    public static JobKey getJobKey(Long jobId) {
        return JobKey.jobKey(JOB_NAME + jobId);
    }

    /**
     * 獲取表示式觸發器
     */
    public static CronTrigger getCronTrigger(Scheduler scheduler, Long jobId) {
        try {
            return (CronTrigger) scheduler.getTrigger(getTriggerKey(jobId));
        } catch (SchedulerException e) {
            throw new RRException("獲取定時任務CronTrigger出現異常", e);
        }
    }

    /**
     * 建立定時任務
     */
    public static void createScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
        try {
        	//構建job資訊
            JobDetail jobDetail = JobBuilder.newJob(ScheduleJob.class).withIdentity(getJobKey(scheduleJob.getJobId())).build();

            //表示式排程構建器
            CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
            		.withMisfireHandlingInstructionDoNothing();

            //按新的cronExpression表示式構建一個新的trigger
            CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(scheduleJob.getJobId())).withSchedule(scheduleBuilder).build();

            //放入引數，執行時的方法可以獲取
            jobDetail.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);

            scheduler.scheduleJob(jobDetail, trigger);
            
            //暫停任務
            if(scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()){
            	pauseJob(scheduler, scheduleJob.getJobId());
            }
        } catch (SchedulerException e) {
            throw new RRException("建立定時任務失敗", e);
        }
    }
    
    /**
     * 更新定時任務
     */
    public static void updateScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
        try {
            TriggerKey triggerKey = getTriggerKey(scheduleJob.getJobId());

            //表示式排程構建器
            CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
            		.withMisfireHandlingInstructionDoNothing();

            CronTrigger trigger = getCronTrigger(scheduler, scheduleJob.getJobId());
            
            //按新的cronExpression表示式重新構建trigger
            trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
            
            //引數
            trigger.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);
            
            scheduler.rescheduleJob(triggerKey, trigger);
            
            //暫停任務
            if(scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()){
            	pauseJob(scheduler, scheduleJob.getJobId());
            }
            
        } catch (SchedulerException e) {
            throw new RRException("更新定時任務失敗", e);
        }
    }

    /**
     * 立即執行任務
     */
    public static void run(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
        try {
        	//引數
        	JobDataMap dataMap = new JobDataMap();
        	dataMap.put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);
        	
            scheduler.triggerJob(getJobKey(scheduleJob.getJobId()), dataMap);
        } catch (SchedulerException e) {
            throw new RRException("立即執行定時任務失敗", e);
        }
    }

    /**
     * 暫停任務
     */
    public static void pauseJob(Scheduler scheduler, Long jobId) {
        try {
            scheduler.pauseJob(getJobKey(jobId));
        } catch (SchedulerException e) {
            throw new RRException("暫停定時任務失敗", e);
        }
    }

    /**
     * 恢復任務
     */
    public static void resumeJob(Scheduler scheduler, Long jobId) {
        try {
            scheduler.resumeJob(getJobKey(jobId));
        } catch (SchedulerException e) {
            throw new RRException("暫停定時任務失敗", e);
        }
    }

    /**
     * 刪除定時任務
     */
    public static void deleteScheduleJob(Scheduler scheduler, Long jobId) {
        try {
            scheduler.deleteJob(getJobKey(jobId));
        } catch (SchedulerException e) {
            throw new RRException("刪除定時任務失敗", e);
        }
    }
}