定时调度Quartz的Manage类，可用于定时任务的增删改，并指定开始时间和结束时间

定时调度Quartz的管理类，可用于定时任务的增删改，并指定开始时间和结束时间

import java.util.Date;
import java.util.HashMap;
import java.util.Map.Entry;

import org.quartz.CronScheduleBuilder;
import org.quartz.CronTrigger;
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;

/**
 * Quartz管理类
 * 
 * @ClassName: QuartzManager
 * @Description: TODO(这里用一句话描述这个类的作用)
 * @date 2018年8月10日
 *
 */
public class QuartzManager {

    private static SchedulerFactory schedulerFactory = new StdSchedulerFactory();

    private static final String JOB_GROUP_NAME = "JOB_GROUP";

    /**
     * 添加定时任务
     */
    public static void addJob(String jobName, Class jobClass, Date startTime, Date endTime, 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, JOB_GROUP_NAME).build();
            // 触发器
            TriggerBuilder triggerBuilder = TriggerBuilder.newTrigger();
            // 触发器名,触发器组
            triggerBuilder.withIdentity(jobName,Scheduler.DEFAULT_GROUP);
            triggerBuilder.startAt(startTime);
            triggerBuilder.endAt(endTime);
            // 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);
        }
    }

    public static void addJobWithParams(String jobName, Class jobClass, Date startTime, Date endTime, String cron,
            HashMap params) {
        try {
            Scheduler sched = schedulerFactory.getScheduler();
            // 任务名，任务组，任务执行类
            JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(jobName, JOB_GROUP_NAME).build();
            for (Entry param : params.entrySet()) {
                jobDetail.getJobDataMap().put(param.getKey(), param.getValue());
            }
            // 触发器
            TriggerBuilder triggerBuilder = TriggerBuilder.newTrigger();
            // 触发器名,触发器组
            triggerBuilder.withIdentity(jobName, Scheduler.DEFAULT_GROUP);
            triggerBuilder.startAt(startTime);
            triggerBuilder.endAt(endTime);
            // 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);
        }
    }

    /**
     * 修改一个任务的触发时间
     */
    public static void modifyJobTime(String jobName,Date startTime,Date endTime, String cron) {
        try {
            Scheduler sched = schedulerFactory.getScheduler();
            TriggerKey triggerKey = TriggerKey.triggerKey(jobName, Scheduler.DEFAULT_GROUP);
            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 triggerBuilder = TriggerBuilder.newTrigger();
                // 触发器名,触发器组
                triggerBuilder.withIdentity(jobName, Scheduler.DEFAULT_GROUP);
                triggerBuilder.startAt(startTime);
                triggerBuilder.endAt(endTime);
                // 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 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);
        }
    }

    /**
     * 删除定时任务
     */
    public static void removeJob(String jobName) {
        try {
            Scheduler sched = schedulerFactory.getScheduler();

            TriggerKey triggerKey = TriggerKey.triggerKey(jobName, Scheduler.DEFAULT_GROUP);

            sched.pauseTrigger(triggerKey);// 停止触发器
            sched.unscheduleJob(triggerKey);// 移除触发器
            sched.deleteJob(JobKey.jobKey(jobName, JOB_GROUP_NAME));// 删除任务
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 启动所有任务
     */
    public static void startJobs() {
        try {
            Scheduler sched = schedulerFactory.getScheduler();
            sched.start();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 关闭所有任务
     */
    public static void shutdownJobs() {
        try {
            Scheduler sched = schedulerFactory.getScheduler();
            if (!sched.isShutdown()) {
                sched.shutdown();
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}