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);

        }

    }

}

MyJob.java 任务类

import java.util.Date;

import org.quartz.Job;

import org.quartz.JobExecutionContext;

import org.quartz.JobExecutionException;

public class MyJob implements Job{

    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {

        System.out.println(new Date() + ": doing something...");

    }

}

Test.Java 测试类

public class Test {

    public static String JOB_NAME = "动态任务调度";

    public static String TRIGGER_NAME = "动态任务触发器";

    public static String JOB_GROUP_NAME = "XLXXCC_JOB_GROUP";

    public static String TRIGGER_GROUP_NAME = "XLXXCC_JOB_GROUP"; 

    public static void main(String[] args) {

        try {

            System.out.println("【系统启动】开始(每1秒输出一次)...");

            QuartzManager.addJob(JOB_NAME, JOB_GROUP_NAME, TRIGGER_NAME, TRIGGER_GROUP_NAME, MyJob.class, "0/1 * * * * ?");    

            Thread.sleep(5000);

            System.out.println("【修改时间】开始(每5秒输出一次)...");

            QuartzManager.modifyJobTime(JOB_NAME, JOB_GROUP_NAME, TRIGGER_NAME, TRIGGER_GROUP_NAME, "0/5 * * * * ?");    

            Thread.sleep(6000);

            System.out.println("【移除定时】开始...");

            QuartzManager.removeJob(JOB_NAME, JOB_GROUP_NAME, TRIGGER_NAME, TRIGGER_GROUP_NAME);

            System.out.println("【移除定时】成功");

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}