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任务调度开源框架Quartz动态添加、修改和删除定时任务

Quartz 是个开源的作业调度框架,为在 Java 应用程序中进行作业调度提供了简单却强大的机制。Quartz框架包含了调度器监听、作业和触发器监听。你可以配置作业和触发器监听为全局监听或者是特定 于作业和触发器的监听。Quartz 允许开发人员根据时间间隔(或天)来调度作业。它实现了作业和触发器的多对多关系,还能把多个作业与不同的触发器关联。整合了 Quartz 的应用程序可以重用来自不同事件的作业,还可以为一个事件组合多个作业。并且还能和Spring配置整合使用。Quartz在功能上远远超越了JDK自带 的Timer,很好很强大!好啦,直接上代码:

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    /** 
     * @Description:  
     * 
     * @Title: QuartzManager.java 
     * @Package com.joyce.quartz 
     * @Copyright: Copyright (c) 2014 
     * 
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:15:52 
     * @version V2.0 
     */  
    package com.joyce.quartz;  
 
    import org.quartz.CronTrigger;  
    import org.quartz.JobDetail;  
    import org.quartz.Scheduler;  
    import org.quartz.SchedulerFactory;  
    import org.quartz.impl.StdSchedulerFactory;  
 
    /** 
     * @Description: 定时任务管理类 
     *  
     * @ClassName: QuartzManager 
     * @Copyright: Copyright (c) 2014 
     *  
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:15:52 
     * @version V2.0 
     */  
    public class QuartzManager {  
        private static SchedulerFactory gSchedulerFactory = new StdSchedulerFactory();  
        private static String JOB_GROUP_NAME = "EXTJWEB_JOBGROUP_NAME";  
        private static String TRIGGER_GROUP_NAME = "EXTJWEB_TRIGGERGROUP_NAME";  
 
        /** 
         * @Description: 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 cls 
         *            任务 
         * @param time 
         *            时间设置,参考quartz说明文档 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:47:44 
         * @version V2.0 
         */  
        @SuppressWarnings("unchecked")  
        public static void addJob(String jobName, Class cls, String time) {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, cls);// 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();  
                }  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @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 time 
         *            时间设置,参考quartz说明文档 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:48:15 
         * @version V2.0 
         */  
        @SuppressWarnings("unchecked")  
        public static void addJob(String jobName, String jobGroupName,  
                String triggerName, String triggerGroupName, Class jobClass,  
                String time) {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                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  
                sched.scheduleJob(jobDetail, trigger);  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description: 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 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:49:21 
         * @version V2.0 
         */  
        @SuppressWarnings("unchecked")  
        public static void modifyJobTime(String jobName, String time) {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                CronTrigger trigger = (CronTrigger) sched.getTrigger(jobName,TRIGGER_GROUP_NAME);  
                if (trigger == null) {  
                    return;  
                }  
                String oldTime = trigger.getCronExpression();  
                if (!oldTime.equalsIgnoreCase(time)) {  
                    JobDetail jobDetail = sched.getJobDetail(jobName,JOB_GROUP_NAME);  
                    Class objJobClass = jobDetail.getJobClass();  
                    removeJob(jobName);  
                    addJob(jobName, objJobClass, time);  
                }  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description: 修改一个任务的触发时间 
         *  
         * @param triggerName 
         * @param triggerGroupName 
         * @param time 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:49:37 
         * @version V2.0 
         */  
        public static void modifyJobTime(String triggerName,  
                String triggerGroupName, String time) {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                CronTrigger trigger = (CronTrigger) sched.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  
                    sched.resumeTrigger(triggerName, triggerGroupName);  
                }  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description: 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 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:49:51 
         * @version V2.0 
         */  
        public static void removeJob(String jobName) {  
            try {  
                Scheduler sched = gSchedulerFactory.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  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description: 移除一个任务 
         *  
         * @param jobName 
         * @param jobGroupName 
         * @param triggerName 
         * @param triggerGroupName 
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:50:01 
         * @version V2.0 
         */  
        public static void removeJob(String jobName, String jobGroupName,  
                String triggerName, String triggerGroupName) {  
            try {  
                Scheduler sched = gSchedulerFactory.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  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description:启动所有定时任务 
         *  
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:50:18 
         * @version V2.0 
         */  
        public static void startJobs() {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                sched.start();  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
 
        /** 
         * @Description:关闭所有定时任务 
         *  
         *  
         * @Title: QuartzManager.java 
         * @Copyright: Copyright (c) 2014 
         *  
         * @author Comsys-LZP 
         * @date 2014-6-26 下午03:50:26 
         * @version V2.0 
         */  
        public static void shutdownJobs() {  
            try {  
                Scheduler sched = gSchedulerFactory.getScheduler();  
                if (!sched.isShutdown()) {  
                    sched.shutdown();  
                }  
            } catch (Exception e) {  
                throw new RuntimeException(e);  
            }  
        }  
    }

以上就是quartz任务调度对于任务的常用操作,封装起来以便在外部调用!这样我们就需要任务的执行了:

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    /** 
     * @Description:  
     * 
     * @Title: QuartzJob.java 
     * @Package com.joyce.quartz 
     * @Copyright: Copyright (c) 2014 
     * 
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:37:11 
     * @version V2.0 
     */  
    package com.joyce.quartz;  
 
    import java.text.SimpleDateFormat;  
    import java.util.Date;  
 
    import org.quartz.Job;  
    import org.quartz.JobExecutionContext;  
    import org.quartz.JobExecutionException;  
 
    /** 
     * @Description: 任务执行类 
     * 
     * @ClassName: QuartzJob 
     * @Copyright: Copyright (c) 2014 
     * 
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:37:11 
     * @version V2.0 
     */  
    public class QuartzJob implements Job {  
 
        @Override  
        public void execute(JobExecutionContext arg0) throws JobExecutionException {  
            System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+ "★★★★★★★★★★★");    
        }  
    }

Ok,我们来测试一下:

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    /** 
     * @Description:  
     * 
     * @Title: QuartzTest.java 
     * @Package com.joyce.quartz.main 
     * @Copyright: Copyright (c) 2014 
     * 
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:35:05 
     * @version V2.0 
     */  
    package com.joyce.quartz.main;  
 
    import com.joyce.quartz.QuartzJob;  
    import com.joyce.quartz.QuartzManager;  
 
    /** 
     * @Description: 测试类 
     * 
     * @ClassName: QuartzTest 
     * @Copyright: Copyright (c) 2014 
     * 
     * @author Comsys-LZP 
     * @date 2014-6-26 下午03:35:05 
     * @version V2.0 
     */  
    public class QuartzTest {  
        public static void main(String[] args) {  
            try {  
                String job_name = "动态任务调度";  
                System.out.println("【系统启动】开始(每1秒输出一次)...");    
                QuartzManager.addJob(job_name, QuartzJob.class, "0/1 * * * * ?");    
 
                Thread.sleep(5000);    
                System.out.println("【修改时间】开始(每2秒输出一次)...");    
                QuartzManager.modifyJobTime(job_name, "10/2 * * * * ?");    
                Thread.sleep(6000);    
                System.out.println("【移除定时】开始...");    
                QuartzManager.removeJob(job_name);    
                System.out.println("【移除定时】成功");    
 
                System.out.println("【再次添加定时任务】开始(每10秒输出一次)...");    
                QuartzManager.addJob(job_name, QuartzJob.class, "*/10 * * * * ?");    
                Thread.sleep(60000);    
                System.out.println("【移除定时】开始...");    
                QuartzManager.removeJob(job_name);    
                System.out.println("【移除定时】成功");  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
        }  
    }

运行一下,看看效果图:

至于定时的配置的话,有兴趣的各位可以去看看Quartz的cron表达式,这里就不给大伙儿介绍了哈!问问度娘,这资料很全面地!

One response to “ 任务调度开源框架Quartz动态添加、修改和删除定时任务 ”

  1. Hello,I check your new stuff named “任务调度开源框架Quartz动态添加、修改和删除定时任务 | 编程小贴士” regularly.Your humoristic style is witty, keep doing what you’re doing! And you can look our website about free anonymous proxies.

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