引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-quartz</artifactId>
    <version>2.2.9.RELEASE</version>
</dependency>

代码实现

package net.evecom.iaplatform.backup.schedule;

import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;

/**
 * <p>
 * <B>Description: 动态增删改定时器</B>
 * </P>
 * 2024/6/26 Ryan Huang CREATE
 *
 * @author Ryan Huang
 * @version 1.0
 */
public class DynamicQuartzOperations {

    private static final Logger LOG = org.slf4j.LoggerFactory.getLogger(DynamicQuartzOperations.class);

    /**
     * 添加定时任务
     *
     * @param jobName 任务名称
     * @param jobGroup 任务组
     * @param triggerName 触发器名称
     * @param triggerGroup 触发器组
     * @param cronExpression cron表达式
     * @param jobClass 任务类
     */
    public static void addJob(String jobName, String jobGroup, String triggerName,
                              String triggerGroup, String cronExpression, Class<? extends Job> jobClass) {
        try {
            // 获取Scheduler实例
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            scheduler.start();

            // 定义JobDetail
            JobDetail job = JobBuilder.newJob(jobClass)
                    .withIdentity(jobName, jobGroup)
                    .build();

            // 定义Trigger
            Trigger trigger = TriggerBuilder.newTrigger()
                    .withIdentity(triggerName, triggerGroup)
                    .startNow()
                    .withSchedule(CronScheduleBuilder
                            .cronSchedule(cronExpression))
                    .build();

            // 将JobDetail和Trigger注册到Scheduler中
            scheduler.scheduleJob(job, trigger);

            LOG.info("Job added successfully.");

        } catch (SchedulerException e) {
            LOG.error("Error adding job: " + e.getMessage());
        }
    }

    /**
     * 修改定时任务
     *
     * @param triggerName 触发器名称
     * @param triggerGroup 触发器组
     * @param newCronExpression 新cron表达式
     */
    public static void modifyCronTrigger(String triggerName, String triggerGroup, String newCronExpression) {
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            TriggerKey triggerKey = TriggerKey.triggerKey(triggerName, triggerGroup);
            Trigger trigger = scheduler.getTrigger(triggerKey);

            if (trigger instanceof CronTrigger) {
                CronTrigger cronTrigger = (CronTrigger) trigger;

                // 停止触发器
                scheduler.pauseTrigger(triggerKey);

                // 重建CronTrigger
                CronTrigger newCronTrigger = cronTrigger.getTriggerBuilder()
                        .withIdentity(triggerName, triggerGroup)
                        .withSchedule(CronScheduleBuilder.cronSchedule(newCronExpression))
                        .build();

                // 更新触发器
                scheduler.rescheduleJob(triggerKey, newCronTrigger);

                LOG.info("Cron trigger modified successfully.");
            } else if (trigger != null) {
                LOG.info("Trigger with name '{}' and group '{}' is not a CronTrigger.", triggerName, triggerGroup);
            } else {
                LOG.info("Trigger not found.");
            }
        } catch (SchedulerException e) {
            LOG.error("Error modifying cron trigger: " + e.getMessage(), e);
        }
    }

    /**
     * 删除定时任务
     *
     * @param jobName 任务名称
     * @param jobGroup 任务组
     */
    public static void deleteJob(String jobName, String jobGroup) {
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            JobKey jobKey = JobKey.jobKey(jobName, jobGroup);
            if (scheduler.checkExists(jobKey)) {
                // 停止并删除Job及其相关的Trigger
                scheduler.deleteJob(jobKey);
                LOG.info("Job deleted successfully.");
            } else {
                LOG.info("Job does not exist.");
            }
        } catch (SchedulerException e) {
            LOG.error("Error deleting job: " + e.getMessage());
        }
    }

    /**
     * 启用任务
     *
     * @param jobName 任务名称
     * @param jobGroup 任务组
     */
    public static void resumeJob(String jobName, String jobGroup) {
        JobKey jobKey = JobKey.jobKey(jobName, jobGroup);
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            if (scheduler.checkExists(jobKey)) {
                scheduler.resumeJob(jobKey);
                LOG.info("Job resumed successfully: {}", jobKey);
            } else {
                LOG.info("Job does not exist: {}", jobKey);
            }
        } catch (SchedulerException e) {
            LOG.error("Error resuming job: {}", jobKey, e);
        }
    }

    /**
     * 停用任务
     *
     * @param jobName 任务名称
     * @param jobGroup 任务组
     */
    public static void pauseJob(String jobName, String jobGroup) {
        JobKey jobKey = JobKey.jobKey(jobName, jobGroup);
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

            if (scheduler.checkExists(jobKey)) {
                scheduler.pauseJob(jobKey);
                LOG.info("Job paused successfully: {}", jobKey);
            } else {
                LOG.info("Job does not exist: {}", jobKey);
            }
        } catch (SchedulerException e) {
            LOG.error("Error pausing job: {}", jobKey, e);
        }
    }

    /**
     * 判断任务是否存在
     *
     * @param jobName 任务名称
     * @param jobGroup 任务组
     */
    public static boolean isExists(String jobName, String jobGroup) {
        JobKey jobKey = JobKey.jobKey(jobName, jobGroup);
        try {
            Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
            if (scheduler.checkExists(jobKey)) {
                return true;
            }
        } catch (SchedulerException e) {
            LOG.error("Error job: {}", jobKey, e);
        }
        return false;
    }

}