quartz-2实例

import static org.quartz.CronScheduleBuilder.cronSchedule;
import static org.quartz.JobBuilder.newJob;
import static org.quartz.SimpleScheduleBuilder.simpleSchedule;
import static org.quartz.TriggerBuilder.newTrigger;

import java.util.Date;

import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleTrigger;
import org.quartz.TriggerKey;
import org.quartz.impl.StdSchedulerFactory;

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";
	public static void addJob(String jobName, Class cls, String time) {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			// 任务
			JobDetail job = newJob(cls).withIdentity(jobName, JOB_GROUP_NAME)
					.build();
			// 触发器
			CronTrigger trigger = newTrigger()
					.withIdentity(TRIGGER_GROUP_NAME, JOB_GROUP_NAME)
					.withSchedule(cronSchedule(time)).build();
			sched.scheduleJob(job, trigger);
			// 启动
			if (!sched.isShutdown()) {
				sched.start();
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	public static void addJob(String jobName, Class cls, int time) {

		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			// 任务
			JobDetail job = newJob(cls).withIdentity(jobName, JOB_GROUP_NAME)
					.build();
			// 触发器
			SimpleTrigger trigger = (SimpleTrigger) newTrigger()
					.withIdentity(TRIGGER_GROUP_NAME, JOB_GROUP_NAME)
					.startAt(new Date())
					.withSchedule(
							simpleSchedule().withIntervalInSeconds(time)
									.repeatForever()).build();
			sched.scheduleJob(job, trigger);
			// 启动
			if (!sched.isShutdown()) {
				sched.start();
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	private static void startJobs() {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			sched.start();
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}

	private static void shutdownJobs() {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			if (!sched.isShutdown()) {
				sched.shutdown();
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	public static void removeJob(String jobName) {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			// 停止触发器
			sched.pauseTrigger(TriggerKey.triggerKey(jobName,
					TRIGGER_GROUP_NAME));
			// 移除触发器
			sched.unscheduleJob(TriggerKey.triggerKey(jobName,
					TRIGGER_GROUP_NAME));
			// 删除任务
			sched.deleteJob(JobKey.jobKey(jobName, JOB_GROUP_NAME));
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	public static void modifyJobTime(String jobName, String time) {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			CronTrigger trigger = (CronTrigger) sched.getTrigger(TriggerKey
					.triggerKey(jobName, TRIGGER_GROUP_NAME));
			if (trigger == null) {
				return;
			}
			String oldTime = trigger.getCronExpression();
			if (!oldTime.equalsIgnoreCase(time)) {
				JobDetail jobDetail = sched.getJobDetail(JobKey.jobKey(jobName,
						JOB_GROUP_NAME));
				Class objJobClass = jobDetail.getJobClass();
				removeJob(jobName);
				addJob(jobName, objJobClass, time);
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	public static void modifyJobTime(String jobName, int time) {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			SimpleTrigger trigger = (SimpleTrigger) sched.getTrigger(TriggerKey
					.triggerKey(jobName, TRIGGER_GROUP_NAME));
			if (trigger == null) {
				return;
			}
			JobDetail jobDetail = sched.getJobDetail(JobKey.jobKey(jobName,
					JOB_GROUP_NAME));
			Class objJobClass = jobDetail.getJobClass();
			removeJob(jobName);
			addJob(jobName, objJobClass, time);
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
	public static boolean isExist(String jobName) {
		try {
			Scheduler sched = gSchedulerFactory.getScheduler();
			SimpleTrigger trigger = (SimpleTrigger) sched.getTrigger(TriggerKey
					.triggerKey(jobName, TRIGGER_GROUP_NAME));
			if (trigger == null) {
				return true;
			} else {
				return false;
			}
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
}

import java.text.SimpleDateFormat;
import java.util.Date;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
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()));
	}
}

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, "0/2 * * * * ?");
			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();
		}
	}
}