好用的Quartz管理器类

转发的代码，原理就不提了

下面直接上代码： 
QuartzManager.java 动态添加、修改和删除定时任务管理类

 import org.quartz.CronScheduleBuilder;
 import org.quartz.CronTrigger;
 import org.quartz.Job;
 import org.quartz.JobBuilder;
 import org.quartz.JobDetail;
 import org.quartz.JobKey;
 import org.quartz.Scheduler;
 import org.quartz.SchedulerFactory;
 import org.quartz.Trigger;
 import org.quartz.TriggerBuilder;
 import org.quartz.TriggerKey;
 import org.quartz.impl.StdSchedulerFactory;
 
 public class QuartzManager {
 
     private static SchedulerFactory schedulerFactory = new StdSchedulerFactory();  
 
     /**
      * @Description: 添加一个定时任务
      *
      * @param jobName 任务名
      * @param jobGroupName  任务组名
      * @param triggerName 触发器名
      * @param triggerGroupName 触发器组名
      * @param jobClass  任务
      * @param cron   时间设置，参考quartz说明文档
      */
     @SuppressWarnings({ "unchecked", "rawtypes" })
     public static void addJob(String jobName, String jobGroupName,
             String triggerName, String triggerGroupName, Class jobClass, String cron) {
         try {
             Scheduler sched = schedulerFactory.getScheduler();
             // 任务名，任务组，任务执行类
             JobDetail jobDetail= JobBuilder.newJob(jobClass).withIdentity(jobName, jobGroupName).build();
 
             // 触发器
             TriggerBuilder<Trigger> triggerBuilder = TriggerBuilder.newTrigger();
             // 触发器名,触发器组
             triggerBuilder.withIdentity(triggerName, triggerGroupName);
             triggerBuilder.startNow();
             // 触发器时间设定
             triggerBuilder.withSchedule(CronScheduleBuilder.cronSchedule(cron));
             // 创建Trigger对象
             CronTrigger trigger = (CronTrigger) triggerBuilder.build();
 
             // 调度容器设置JobDetail和Trigger
             sched.scheduleJob(jobDetail, trigger);  
 
             // 启动
             if (!sched.isShutdown()) {
                 sched.start();
             }
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }  
 
     /**
      * @Description: 修改一个任务的触发时间
      *
      * @param jobName
      * @param jobGroupName
      * @param triggerName 触发器名
      * @param triggerGroupName 触发器组名
      * @param cron   时间设置，参考quartz说明文档
      */
     public static void modifyJobTime(String jobName,
             String jobGroupName, String triggerName, String triggerGroupName, String cron) {
         try {
             Scheduler sched = schedulerFactory.getScheduler();
             TriggerKey triggerKey = TriggerKey.triggerKey(triggerName, triggerGroupName);
             CronTrigger trigger = (CronTrigger) sched.getTrigger(triggerKey);
             if (trigger == null) {
                 return;
             }  
 
             String oldTime = trigger.getCronExpression();
             if (!oldTime.equalsIgnoreCase(cron)) {
                 /** 方式一 ：调用 rescheduleJob 开始 */
                 // 触发器
                 TriggerBuilder<Trigger> triggerBuilder = TriggerBuilder.newTrigger();
                 // 触发器名,触发器组
                 triggerBuilder.withIdentity(triggerName, triggerGroupName);
                 triggerBuilder.startNow();
                 // 触发器时间设定
                 triggerBuilder.withSchedule(CronScheduleBuilder.cronSchedule(cron));
                 // 创建Trigger对象
                 trigger = (CronTrigger) triggerBuilder.build();
                 // 方式一 ：修改一个任务的触发时间
                 sched.rescheduleJob(triggerKey, trigger);
                 /** 方式一 ：调用 rescheduleJob 结束 */
 
                 /** 方式二：先删除，然后在创建一个新的Job  */
                 //JobDetail jobDetail = sched.getJobDetail(JobKey.jobKey(jobName, jobGroupName));
                 //Class<? extends Job> jobClass = jobDetail.getJobClass();
                 //removeJob(jobName, jobGroupName, triggerName, triggerGroupName);
                 //addJob(jobName, jobGroupName, triggerName, triggerGroupName, jobClass, cron);
                 /** 方式二 ：先删除，然后在创建一个新的Job */
             }
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }  
 
     /**
      * @Description: 移除一个任务
      *
      * @param jobName
      * @param jobGroupName
      * @param triggerName
      * @param triggerGroupName
      */
     public static void removeJob(String jobName, String jobGroupName,
             String triggerName, String triggerGroupName) {
         try {
             Scheduler sched = schedulerFactory.getScheduler();  
 
             TriggerKey triggerKey = TriggerKey.triggerKey(triggerName, triggerGroupName);
 
             sched.pauseTrigger(triggerKey);// 停止触发器
             sched.unscheduleJob(triggerKey);// 移除触发器
             sched.deleteJob(JobKey.jobKey(jobName, jobGroupName));// 删除任务
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }  
 
     /**
      * @Description:启动所有定时任务
      */
     public static void startJobs() {
         try {
             Scheduler sched = schedulerFactory.getScheduler();
             sched.start();
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }  
 
     /**
      * @Description:关闭所有定时任务
      */
     public static void shutdownJobs() {
         try {
             Scheduler sched = schedulerFactory.getScheduler();
             if (!sched.isShutdown()) {
                 sched.shutdown();
             }
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }
 }