Quartz：Quartz定时代码实现

1.添加pom.xml

<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.quartz-scheduler/quartz-jobs -->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz-jobs</artifactId>
<version>2.2.3</version>
</dependency>

2.添加配置文件，或者不添加使用默认也行，默认线程池数量为10

打开quartz的jar包，可以找到该配置  quartz.properties

复制到资源目录下修改如下

org.quartz.scheduler.instanceName: DemoQuartz
org.quartz.scheduler.rmi.export: false
org.quartz.scheduler.rmi.proxy: false
org.quartz.scheduler.wrapJobExecutionInUserTransaction: false

org.quartz.threadPool.class: org.quartz.simpl.SimpleThreadPool
#线程池数量
org.quartz.threadPool.threadCount: 1
org.quartz.threadPool.threadPriority: 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread: true

org.quartz.jobStore.misfireThreshold: 60000

org.quartz.jobStore.class: org.quartz.simpl.RAMJobStore

　　

3.编写job类

DemoJob.class,HelloJob.class
实现接口 org.quartz.Job

package com.yun.base.job;

import java.util.Calendar;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.SchedulerException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HelloJob implements Job {
    
    private static final Logger LOGGER =  LoggerFactory.getLogger(HelloJob.class);

    @Override
    public void execute(JobExecutionContext context)
            throws JobExecutionException {
        try {
            LOGGER.info(context.getScheduler().getSchedulerName());
            String jobParam = (String) context.getJobDetail().getJobDataMap().get("jobParam");
            if (jobParam != null) {
                LOGGER.info(jobParam.toString());
            }
            LOGGER.info(Integer.toString(Calendar.getInstance().get(Calendar.SECOND)));
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

}

　　

4.编写任务管理工具类 JobSchedule

package com.yun.util;

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.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.TriggerKey;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class JobSchedule {

    private static final Logger LOGGER = LoggerFactory.getLogger(JobSchedule.class);

    private static SchedulerFactory gSchedulerFactory = new StdSchedulerFactory();
    private static String JOB_GROUP_NAME = "YUN_JOBGROUP_NAME";
    private static String TRIGGER_GROUP_NAME = "YUN_TRIGGERGROUP_NAME";

    private JobSchedule(){
        
    }
    
    /**
     * @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 cron
     *            时间设置，参考quartz说明文档
     * @throws SchedulerException
     * 
     */
    public static void addJob(String jobName, Class cls, String cron)
            throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();

        // 用于描叙Job实现类及其他的一些静态信息，构建一个作业实例
        JobDetail jobDetail = JobBuilder.newJob(cls)
                .withIdentity(jobName, JOB_GROUP_NAME).build();
        
        // 构建一个触发器，规定触发的规则
        Trigger trigger = TriggerBuilder.newTrigger()// 创建一个新的TriggerBuilder来规范一个触发器
                .withIdentity(jobName, TRIGGER_GROUP_NAME)// 给触发器起一个名字和组名
                .startNow()// 立即执行
                .withSchedule(CronScheduleBuilder.cronSchedule(cron)) // 触发器的执行时间
                .build();// 产生触发器

        sched.scheduleJob(jobDetail, trigger);
        LOGGER.debug("添加任务:{},{},{}",jobName,cls,cron);
        // 启动
        if (!sched.isShutdown()) {
            sched.start();
        }
    }

    /**
     * @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
     */
    public static void addJob(String jobName, String jobGroupName,
            String triggerName, String triggerGroupName, Class cls, String cron)
            throws SchedulerException {

        Scheduler sched = gSchedulerFactory.getScheduler();
        // 用于描叙Job实现类及其他的一些静态信息，构建一个作业实例
        JobDetail jobDetail = JobBuilder.newJob(cls)
                .withIdentity(jobName, jobGroupName).build();

        // 构建一个触发器，规定触发的规则
        Trigger trigger = TriggerBuilder.newTrigger()// 创建一个新的TriggerBuilder来规范一个触发器
                .withIdentity(jobName, triggerGroupName)// 给触发器起一个名字和组名
                .startNow()// 立即执行
                .withSchedule(CronScheduleBuilder.cronSchedule(cron)) // 触发器的执行时间
                .build();// 产生触发器

        sched.scheduleJob(jobDetail, trigger);
        LOGGER.debug("添加任务:{},{},{},{},{},{}",jobName,jobGroupName,triggerName,triggerGroupName,cls,cron);
        // 启动
        if (!sched.isShutdown()) {
            sched.start();
        }

    }

    /**
     * @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 cron
     * @throws SchedulerException 
     * 
     */
    public static void modifyJobTime(String jobName, String cron) throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();
        TriggerKey triggerKey = new TriggerKey(jobName, TRIGGER_GROUP_NAME);
        CronTrigger trigger = (CronTrigger) sched.getTrigger(triggerKey);
        if (trigger == null) {
            return;
        }
        String oldTime = trigger.getCronExpression();
        if (!oldTime.equalsIgnoreCase(cron)) {
            JobDetail jobDetail = sched.getJobDetail(new JobKey(jobName,
                    JOB_GROUP_NAME));
            Class objJobClass = jobDetail.getJobClass();
            removeJob(jobName);
            addJob(jobName, objJobClass, cron);
            LOGGER.debug("修改任务:{},{}",jobName,cron);
        }
    }

    /**
     * @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
     * 
     * @throws SchedulerException
     */
    public static void removeJob(String jobName) throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();

        JobKey jobKey = new JobKey(jobName, TRIGGER_GROUP_NAME);
        // 停止触发器
        sched.pauseJob(jobKey);
        sched.unscheduleJob(new TriggerKey(jobName, TRIGGER_GROUP_NAME));// 移除触发器
        sched.deleteJob(jobKey);// 删除任务
        LOGGER.debug("移除任务:{}",jobName);
    }

    /**
     * 移除任务
     * 
     * @param jobName
     * @param jobGroupName
     * @param triggerName
     * @param triggerGroupName
     * @throws SchedulerException
     */
    public static void removeJob(String jobName, String jobGroupName,
            String triggerName, String triggerGroupName)
            throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();
        JobKey jobKey = new JobKey(jobName, jobGroupName);
        // 停止触发器
        sched.pauseJob(jobKey);
        sched.unscheduleJob(new TriggerKey(jobName, triggerGroupName));// 移除触发器
        sched.deleteJob(jobKey);// 删除任务
        LOGGER.debug("移除任务:{},{},{},{},{},{}",jobName,jobGroupName,triggerName,triggerGroupName);
    }

    /**
     * 启动所有任务
     * 
     * @throws SchedulerException
     */
    public static void startJobs() throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();
        sched.start();
        LOGGER.debug("启动所有任务");
    }

    /**
     * 关闭所有定时任务
     * 
     * @throws SchedulerException
     * 
     */
    public static void shutdownJobs() throws SchedulerException {
        Scheduler sched = gSchedulerFactory.getScheduler();
        if (!sched.isShutdown()) {
            sched.shutdown();
            LOGGER.debug("关闭所有任务");
        }
    }

}

　　

5.测试类

@Test
    public void testTask() {
         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)...");    
             JobSchedule.addJob(job_name, DemoJob.class, "0/1 * * * * ?");    
               
             Thread.sleep(5000);    
             System.out.println("【修改时间】开始(每2秒输出一次)...");    
             JobSchedule.modifyJobTime(job_name, "10/2 * * * * ?");    
             Thread.sleep(6000);    
             System.out.println("【移除定时】开始...");    
             JobSchedule.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)...");    
             JobSchedule.addJob(job_name, HelloJob.class, "*/10 * * * * ?");    
             Thread.sleep(60000);    
             System.out.println("【移除定时】开始...");    
             JobSchedule.removeJob(job_name);    
             System.out.println("【移除定时】成功");  
         } catch (Exception e) {  
             e.printStackTrace();  
         }  
    }

　　

测试结果

【系统启动】开始(每1秒输出一次)...
2017-07-20 18:11:03.026 [main] DEBUG com.yun.util.JobSchedule - 添加任务:动态任务调度,class com.yun.base.job.DemoJob,0/1 * * * * ?
2017-07-20 18:11:03.042 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:03.042 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 3
2017-07-20 18:11:04.001 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:04.001 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 4
2017-07-20 18:11:05.004 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:05.004 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 5
2017-07-20 18:11:06.008 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:06.008 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 6
2017-07-20 18:11:07.012 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:07.012 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 7
2017-07-20 18:11:08.012 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:08.013 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 8
【修改时间】开始(每2秒输出一次)...
2017-07-20 18:11:08.043 [main] DEBUG com.yun.util.JobSchedule - 移除任务:动态任务调度
2017-07-20 18:11:08.047 [main] DEBUG com.yun.util.JobSchedule - 添加任务:动态任务调度,class com.yun.base.job.DemoJob,10/2 * * * * ?
2017-07-20 18:11:08.047 [main] DEBUG com.yun.util.JobSchedule - 修改任务:动态任务调度,10/2 * * * * ?
2017-07-20 18:11:10.001 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:10.001 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 10
2017-07-20 18:11:12.013 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:12.013 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 12
2017-07-20 18:11:14.005 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - DemoQuartz
2017-07-20 18:11:14.005 [DemoQuartz_Worker-1] INFO  com.yun.base.job.DemoJob - 14
【移除定时】开始...
2017-07-20 18:11:14.054 [main] DEBUG com.yun.util.JobSchedule - 移除任务:动态任务调度
【移除定时】成功
【再次添加定时任务】开始(每10秒输出一次)...
2017-07-20 18:11:14.054 [main] DEBUG com.yun.util.JobSchedule - 添加任务:动态任务调度,class com.yun.base.job.HelloJob,*/10 * * * * ?
2017-07-20 18:11:20.010 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:11:20.010 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 20
2017-07-20 18:11:30.006 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:11:30.006 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 30
2017-07-20 18:11:40.004 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:11:40.005 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 40
2017-07-20 18:11:50.007 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:11:50.007 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 50
2017-07-20 18:12:00.010 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:12:00.010 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 0
2017-07-20 18:12:10.000 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - DemoQuartz
2017-07-20 18:12:10.000 [DemoQuartz_Worker-1] INFO  com.yun.base.job.HelloJob - 10
【移除定时】开始...
2017-07-20 18:12:14.060 [main] DEBUG com.yun.util.JobSchedule - 移除任务:动态任务调度
【移除定时】成功

　　

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原文地址：https://www.cnblogs.com/nhdlb/p/11951799.html