spring 定时器demo

2021-07-18 17:15:03

1,管理类

import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;

/**
 * Quartz调度管理器
 * Created by yinx on 2017/9/25 0025.
 */
public class QuartzManager {
    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 sched 调度器
     * @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
     */
    public static void addJob(Scheduler sched, String jobName, @SuppressWarnings("rawtypes") Class cls, String time) {
        try {
            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 sched 调度器
     * @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
     */
    public static void addJob(Scheduler sched, String jobName, String jobGroupName, String triggerName, String triggerGroupName, @SuppressWarnings("rawtypes") 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
            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 sched 调度器
     * @param jobName
     * @param time
     *
     * @Title: QuartzManager.java
     */
    @SuppressWarnings("rawtypes")
    public static void modifyJobTime(Scheduler sched, String jobName, String time) {
        try {
            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(sched, jobName);
                addJob(sched, jobName, objJobClass, time);
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 修改一个任务的触发时间
     *
     * @param sched 调度器
     * @param triggerName
     * @param triggerGroupName
     * @param time
     *
     * @Title: QuartzManager.java
     */
    public static void modifyJobTime(Scheduler sched, String triggerName, String triggerGroupName, String time) {
        try {
            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 sched 调度器
     * @param jobName
     *
     * @Title: QuartzManager.java
     */
    public static void removeJob(Scheduler sched, String jobName) {
        try {
            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 sched 调度器
     * @param jobName
     * @param jobGroupName
     * @param triggerName
     * @param triggerGroupName
     *
     * @Title: QuartzManager.java
     */
    public static void removeJob(Scheduler sched, String jobName, String jobGroupName, String triggerName, String triggerGroupName) {
        try {
            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
     *
     * @param sched 调度器
     *
     * @Title: QuartzManager.java
     */
    public static void startJobs(Scheduler sched) {
        try {
            sched.start();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description:关闭所有定时任务
     *
     * @param sched 调度器
     *
     * @Title: QuartzManager.java
     */
    public static void shutdownJobs(Scheduler sched) {
        try {
            if (!sched.isShutdown()) {
                sched.shutdown();
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

2，dingshi定时类

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * quartz示例定时器类
 * Created by Administrator on 2017/9/25 0025.
 */
public class QuartzJobExample implements Job{
    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + "");
    }
}

3，test类

import org.junit.Test;
import org.junit.runner.RunWith;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * Created by yinx on 2017/9/25 0025.
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:META-INF/test-config.xml" })
public class QuartzTest {

    @Test
    public void quartzTest(){
        System.out.println("========================" + QuartzTest.class);
    }

    @Test
    public void quartz() {
        try {
            SchedulerFactory gSchedulerFactory = new StdSchedulerFactory();
            Scheduler sche = gSchedulerFactory.getScheduler();
            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(sche, job_name, QuartzJobExample.class, "0/1 * * * * ?");

            Thread.sleep(3000);
            System.out.println("【修改时间】开始(每2秒输出一次)...");
            QuartzManager.modifyJobTime(sche, job_name, "10/2 * * * * ?");
            Thread.sleep(4000);
            System.out.println("【移除定时】开始...");
            QuartzManager.removeJob(sche, 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(sche, job_name, QuartzJobExample.class, "10 * * * * ?");
            Thread.sleep(30000);
            System.out.println("【移除定时】开始...");
            QuartzManager.removeJob(sche, job_name);
            System.out.println("【移除定时】成功");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

这也是我在别的博客看见的，地址忘了，写的挺好的这个

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