java 動態增加定時任務

直接上代碼

import org.apache.tools.ant.util.DateUtils;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;

import java.util.Calendar;
import java.util.Date;


/**
 * @Description: 定時任務管理類
 * Created by zhangxb on 2017/2/10.
 */
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: 添加一個定時任務，使用默認的任務組名，觸發器名，觸發器組名
     *
     * @param jobName
     *            任務名
     * @param cls
     *            任務
     * @param time
     *            時間設置，參考quartz說明文檔
     *
     * @Title: QuartzManager.java
     */
    @SuppressWarnings("unchecked")
    public static void addJob(String jobName, Class cls, String time,Object params) {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, cls);// 任務名，任務組，任務執行類
            jobDetail.getJobDataMap().put("params", params);
            // 觸發器
            CronTrigger trigger = new CronTrigger(jobName, TRIGGER_GROUP_NAME);// 觸發器名,觸發器組
            trigger.setCronExpression(time);// 觸發器時間設定
            sched.scheduleJob(jobDetail, trigger);
            // 啟動
            if (!sched.isShutdown()) {
                sched.start();
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 添加一個定時任務
     *
     * @param jobName
     *            任務名
     * @param jobGroupName
     *            任務組名
     * @param triggerName
     *            觸發器名
     * @param triggerGroupName
     *            觸發器組名
     * @param jobClass
     *            任務
     * @param time
     *            時間設置，參考quartz說明文檔
     *
     */
    @SuppressWarnings("unchecked")
    public static void addJob(String jobName, String jobGroupName,
                              String triggerName, String triggerGroupName, Class jobClass,
                              String time,Object params) {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            JobDetail jobDetail = new JobDetail(jobName, jobGroupName, jobClass);// 任務名，任務組，任務執行類
            jobDetail.getJobDataMap().put("params",params);
            // 觸發器
            CronTrigger trigger = new CronTrigger(triggerName, triggerGroupName);// 觸發器名,觸發器組
            trigger.setCronExpression(time);// 觸發器時間設定
            sched.scheduleJob(jobDetail, trigger);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 修改一個任務的觸發時間(使用默認的任務組名，觸發器名，觸發器組名)
     *
     * @param jobName
     * @param time
     *
     */
    @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 ,jobDetail.getJobDataMap());
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 修改一個任務的觸發時間
     *
     */
    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;
                // 修改時間
                ct.setCronExpression(time);
                // 重啟觸發器
                sched.resumeTrigger(triggerName, triggerGroupName);
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 移除一個任務(使用默認的任務組名，觸發器名，觸發器組名)
     *
     * @param jobName
     *
     */
    public static void removeJob(String jobName) {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            sched.pauseTrigger(jobName, TRIGGER_GROUP_NAME);// 停止觸發器
            sched.unscheduleJob(jobName, TRIGGER_GROUP_NAME);// 移除觸發器
            sched.deleteJob(jobName, JOB_GROUP_NAME);// 刪除任務
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description: 移除一個任務
     *
     */
    public static void removeJob(String jobName, String jobGroupName,
                                 String triggerName, String triggerGroupName) {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            sched.pauseTrigger(triggerName, triggerGroupName);// 停止觸發器
            sched.unscheduleJob(triggerName, triggerGroupName);// 移除觸發器
            sched.deleteJob(jobName, jobGroupName);// 刪除任務
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description:啟動所有定時任務
     */
    public static void startJobs() {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            sched.start();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Description:關閉所有定時任務
     *
     */
    public static void shutdownJobs() {
        try {
            Scheduler sched = gSchedulerFactory.getScheduler();
            if (!sched.isShutdown()) {
                sched.shutdown();
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static String formatTime(Date date){
        //0/1 * * * * ?
        String time = DateUtils.format( date, "s m h d * ?");
        System.out.println(time);
        return time;
    }
}

測試類

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

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

/**
 * @Description: 任務執行類
 * Created by zhangxb on 2017/2/10.
 */
public class QuartzJob implements Job {
    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        Object params =   context.getJobDetail().getJobDataMap().get("params");
        System.out.println(params);
        System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+ "★★★★★★★★★★★");
        System.out.println("【移除定時】開始...");
        QuartzManager.removeJob((String)params);
        System.out.println("【移除定時】成功");
    }
    public static void main(String[] args) {
        try {
            String job_name = "動態任務調度";
            System.out.println("【系統啟動】開始(每1秒輸出一次)...");
            Calendar cal = Calendar.getInstance();
            cal.add( Calendar.SECOND,10);
            QuartzManager.addJob(job_name, QuartzJob.class, QuartzManager.formatTime(cal.getTime()),job_name);
            Thread.sleep(11);
            cal.setTime( new Date());
            cal.add( Calendar.SECOND,10);
            QuartzManager.addJob(job_name+1, QuartzJob.class, QuartzManager.formatTime(cal.getTime()),job_name+1);
            Thread.sleep(11);
//            System.out.println("【修改時間】開始(每2秒輸出一次)...");
//            QuartzManager.modifyJobTime(job_name, "10/2 * * * * ?");
//            Thread.sleep(6000);
//            System.out.println("【移除定時】開始...");
//            QuartzManager.removeJob(job_name);
//            System.out.println("【移除定時】成功");
//
//            System.out.println("【再次添加定時任務】開始(每10秒輸出一次)...");
//            QuartzManager.addJob(job_name, QuartzJob.class, "*/10 * * * * ?");
//            Thread.sleep(60000);
//            System.out.println("【移除定時】開始...");
//            QuartzManager.removeJob(job_name);
//            System.out.println("【移除定時】成功");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

不過最后發現，還是沒法做動態延遲。后面用延時mq實現的。