管理Quarz的工具类，QuarzManager

package com.test.quarz;    import java.text.ParseException;    import org.quartz.CronTrigger;  import org.quartz.Job;  import org.quartz.JobDetail;  import org.quartz.Scheduler;  import org.quartz.SchedulerException;  import org.quartz.SchedulerFactory;  import org.quartz.Trigger;  import org.quartz.impl.StdSchedulerFactory;    public class QuarzManager {      private static SchedulerFactory sf = new StdSchedulerFactory();      private static String JOB_GROUP_NAME = "jobGroup1";      private static String TRIGGER_GROUP_NAME = "triggerGroup1";          /** *//**        * 添加一个定时任务，使用默认的任务组名，触发器名，触发器组名        * @param jobName 任务名        * @param job     任务        * @param time    时间设置，参考quartz说明文档        * @throws SchedulerException        * @throws ParseException        */        public static void addJob(String jobName,Job job,String time)                                     throws SchedulerException, ParseException{            Scheduler sched = sf.getScheduler();            JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, job.getClass());//任务名，任务组，任务执行类            //触发器            CronTrigger trigger =                  new CronTrigger(jobName, TRIGGER_GROUP_NAME);//触发器名,触发器组            trigger.setCronExpression(time);//触发器时间设定            sched.scheduleJob(jobDetail,trigger);            //启动            if(!sched.isShutdown())               sched.start();        }                /** *//**        * 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 job     任务        * @param time    时间设置，参考quartz说明文档        * @throws SchedulerException        * @throws ParseException        */        public static void addJob(String jobName,String jobGroupName,                                  String triggerName,String triggerGroupName,                                  Job job,String time)                                     throws SchedulerException, ParseException{            Scheduler sched = sf.getScheduler();            JobDetail jobDetail = new JobDetail(jobName, jobGroupName, job.getClass());//任务名，任务组，任务执行类            //触发器            CronTrigger trigger =                  new CronTrigger(triggerName, triggerGroupName);//触发器名,触发器组            trigger.setCronExpression(time);//触发器时间设定            sched.scheduleJob(jobDetail,trigger);            if(!sched.isShutdown())               sched.start();        }                /** *//**        * 修改一个任务的触发时间(使用默认的任务组名，触发器名，触发器组名)        * @param jobName        * @param time        * @throws SchedulerException       * @throws ParseException        */        public static void modifyJobTime(String jobName,String time)                                        throws SchedulerException, ParseException{            Scheduler sched = sf.getScheduler();            Trigger trigger = sched.getTrigger(jobName,TRIGGER_GROUP_NAME);            if(trigger != null){                CronTrigger ct = (CronTrigger)trigger;                ct.setCronExpression(time);                sched.resumeTrigger(jobName,TRIGGER_GROUP_NAME);            }        }                /** *//**        * 修改一个任务的触发时间        * @param triggerName        * @param triggerGroupName        * @param time        * @throws SchedulerException        * @throws ParseException        */        public static void modifyJobTime(String triggerName,String triggerGroupName,                                         String time)                                        throws SchedulerException, ParseException{            Scheduler sched = sf.getScheduler();            Trigger trigger = sched.getTrigger(triggerName,triggerGroupName);            if(trigger != null){                CronTrigger ct = (CronTrigger)trigger;                //修改时间                ct.setCronExpression(time);                //重启触发器                sched.resumeTrigger(triggerName,triggerGroupName);            }        }                /** *//**        * 移除一个任务(使用默认的任务组名，触发器名，触发器组名)        * @param jobName        * @throws SchedulerException        */        public static void removeJob(String jobName)                                     throws SchedulerException{            Scheduler sched = sf.getScheduler();            sched.pauseTrigger(jobName,TRIGGER_GROUP_NAME);//停止触发器            sched.unscheduleJob(jobName,TRIGGER_GROUP_NAME);//移除触发器            sched.deleteJob(jobName,JOB_GROUP_NAME);//删除任务        }                /** *//**        * 移除一个任务        * @param jobName        * @param jobGroupName        * @param triggerName        * @param triggerGroupName        * @throws SchedulerException        */        public static void removeJob(String jobName,String jobGroupName,                                     String triggerName,String triggerGroupName)                                     throws SchedulerException{            Scheduler sched = sf.getScheduler();            sched.pauseTrigger(triggerName,triggerGroupName);//停止触发器            sched.unscheduleJob(triggerName,triggerGroupName);//移除触发器            sched.deleteJob(jobName,jobGroupName);//删除任务        }         }