Java Quartz如何控制定时器启动与停止

以下内容基于Spring4.X、quartz1.6.6。大致想法是。通过Spring注入工厂对象,获取Scheduler。通过JobFactory解决执行类无法使用注入注解的问题。

QuartzManager封装了定时器常用操作方法

package framework.basic.quartz;

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

import java.text.ParseException;

/**
 * @Description: 定时任务管理类
 * 该类可管理XML配置的定时器(quartzManagerSchedulerFactoryBean)
 *      默认任务组名为(Scheduler.DEFAULT_GROUP)
 *      任务名为JobDetail的beanId
 *      默认触发器组名为(Scheduler.DEFAULT_GROUP)
 *      触发器名为CronTriggerBean的BeanId
 * 可在代码中定义创建定时器
 *      该类方法时 执行类需要继承org.quartz.Job接口 复写execute方法
 * @ClassName: QuartzManager
 */
public class QuartzManager {
    private static final Logger logger = LoggerFactory.getLogger(QuartzManager.class);

    public QuartzManager() {
        SchedulerFactory schedulerFactory = new StdSchedulerFactory();
        try {
            setScheduler(schedulerFactory.getScheduler());
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

    /**
     * 通过构造器注入Spring所管理的工厂对象
     * @param scheduler
     */
    public QuartzManager(Scheduler scheduler) {
        setScheduler(scheduler);
    }

    private Scheduler scheduler;

    public Scheduler getScheduler() {
        return scheduler;
    }

    public void setScheduler(Scheduler scheduler) {
        this.scheduler = scheduler;
    }


    /**
     * @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 time             时间设置,参考quartz说明文档
     * @Description: 添加一个定时任务
     */
    @SuppressWarnings("unchecked")
    public void addJob(String jobName, String jobGroupName,
                       String triggerName, String triggerGroupName, Class jobClass,
                       String time) {
        try {
            JobDetail jobDetail = new JobDetail(jobName, jobGroupName, jobClass);// 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
            scheduler.scheduleJob(jobDetail, trigger);
        } catch (SchedulerException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }



    /**
     * 暂停一个job
     *
     * @param jobName
     * @param jobGroupName
     */
    public void pauseJob(String jobName, String jobGroupName) {
        try {
            scheduler.pauseJob(jobName, jobGroupName);
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

    /**
     * 恢复一个job 恢复定时器时立刻先执行一次定时器的任务 然后再按计划执行
     *
     * @param jobName
     * @param jobGroupName
     */
    public void resumeJob(String jobName, String jobGroupName) {
        try {
            scheduler.resumeJob(jobName, jobGroupName);
        } catch (SchedulerException e) {
            logger.error("恢复定时器异常:jobName[{}],jobGroupName[{}]",jobName,jobGroupName);
            e.printStackTrace();
        }
    }

    /**
     * @param jobName
     * @param jobGroupName
     * @param triggerName
     * @param triggerGroupName
     * @Description: 移除一个任务
     */
    public void removeJob(String jobName, String jobGroupName,
                          String triggerName, String triggerGroupName) {
        try {
            scheduler.pauseTrigger(triggerName, triggerGroupName);// 停止触发器
            scheduler.unscheduleJob(triggerName, triggerGroupName);// 移除触发器
            scheduler.deleteJob(jobName, jobGroupName);// 删除任务
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }



    /**
     * @param triggerName
     * @param triggerGroupName
     * @param time
     * @Description: 修改一个任务的触发时间
     */
    public void modifyJobTime(String triggerName,
                              String triggerGroupName, String time) {
        try {
            CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerName, triggerGroupName);
            if (trigger == null) {
                return;
            }
            String oldTime = trigger.getCronExpression();
            if (!oldTime.equalsIgnoreCase(time)) {
                CronTrigger ct = (CronTrigger) trigger;
                // 修改时间
                ct.setCronExpression(time);
                // 重启触发器
                scheduler.resumeTrigger(triggerName, triggerGroupName);
            }
        } catch (SchedulerException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }


    /**
     * @param triggerName
     * @param triggerGroup
     * @Description: 获取触发器状态
     *
     * @return
     *       STATE_BLOCKED 4 阻塞
     *       STATE_COMPLETE 2 完成
     *       STATE_ERROR 3 错误
     *       STATE_NONE -1 不存在
     *       STATE_NORMAL 0 正常
     *       STATE_PAUSED 1 暂停
     */
    public int getTriggerState(String triggerName, String triggerGroup ){
        try {
            return scheduler.getTriggerState(triggerName,triggerGroup);
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
        return 3;
    }

    /**
     * @Description:启动所有定时任务
     */
    public void startJobs() {
        try {
            scheduler.start();
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

    /**
     * @Description:关闭所有定时任务
     */
    public void shutdownJobs() {
        try {
            if (!scheduler.isShutdown()) {
                scheduler.shutdown();
            }
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

}

JobFactory对象注入类

package framework.basic.job;

import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.scheduling.quartz.AdaptableJobFactory;

public class JobFactory extends AdaptableJobFactory {
    @Autowired
    private AutowireCapableBeanFactory capableBeanFactory;

    @Override
    protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
        //调用父类的方法
        Object jobInstance = super.createJobInstance(bundle);
        //进行注入
        capableBeanFactory.autowireBean(jobInstance);
        return jobInstance;
    }
}

WorkScheduledJod 执行类,该类需要继承org.quartz.Job,定时器通过程序控制的情况下,默认执行execute方法

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;

import javax.annotation.Resource;

public class WorkScheduledJod implements Job {

    Logger logger = LoggerFactory.getLogger(WorkScheduledJod.class);

    @Resource
    private ApplicationContext context;

    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        logger.info("context[{}]",context);
    }
}

QuartzService用于对外提供服务

package framework.basic.quartz.impl;

import cn.bthhotels.omplan.service.impl.WorkScheduledJod;
import framework.basic.quartz.QuartzManager;
import org.quartz.Scheduler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.annotation.Resource;

public class QuartzService  {

    @Resource
    private QuartzManager quartzManager;


    private static final Logger logger = LoggerFactory.getLogger(QuartzService.class);


    @Override
    public void startAllJod() {
        logger.info("开启定时器");
        quartzManager.addJob(WorkScheduledJod.JOD_ID, Scheduler.DEFAULT_GROUP, WorkScheduledJod.TRIGGER_ID, Scheduler.DEFAULT_GROUP, WorkScheduledJod.class, WorkScheduledJod.CRON_EXPRESSION);

        logger.info("挂起定时器");
        quartzManager.pauseJob(WorkScheduledJod.JOD_ID, Scheduler.DEFAULT_GROUP);

        logger.info("恢复定时器");
        quartzManager.resumeJob(WorkScheduledJod.JOD_ID, Scheduler.DEFAULT_GROUP);

        logger.info("删除定时器");
        quartzManager.removeJob(WorkScheduledJod.JOD_ID, Scheduler.DEFAULT_GROUP, WorkScheduledJod.TRIGGER_ID, Scheduler.DEFAULT_GROUP);

    }

    public QuartzManager getQuartzManager() {
        return quartzManager;
    }
}

Spring配置文件



    
    
    

    
    
        
    

    
    
        
    

      
    
    

tips:

  • 可以将QuartzManager 改成工具类的方式,将对象里的scheduler,以及方法调整为静态;
  • 因为Quartz版本不同,后续添加方法使用JobKey或TriggerKey;
  • JobDetail有个getJobDataMap()方法,通过该MAP添加的对象能在执行类execute方法JobExecutionContext对象的getMergedJobDataMap获取。
  • 通过XML配置的定时器默认组名为(Scheduler.DEFAULT_GROUP)

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