Quartz

Quartz是一个开源的作业调度框架，它完全由Java写成，并设计用于J2SE和J2EE应用中。它提供了巨大的灵 活性而不牺牲简单性。你能够用它来为执行一个作业而创建简单的或复杂的调度。

eg:

jar

entity  (Plan)

public class Plan {
		//时间
		private String date;
		//任务
		private String task;
		public String getDate() {
			return date;
		}
		public void setDate(String date) {
			this.date = date;
		}
		public String getTask() {
			return task;
		}
		public void setTask(String task) {
			this.task = task;
		}
		public Plan(String date, String task) {
			this.date = date;
			this.task = task;
		}
		public Plan() {
		}

}

service  (RemindService)

public class RemindService {
	public void printMessage(){
		List<Plan> list = getPlansForTooday();
		for (Plan plan : list) {
			System.out.println("计划的时间"+plan.getDate()+plan.getTask());
		}
	}

	private List<Plan> getPlansForTooday() {
		List<Plan> list = new ArrayList<Plan>();
		Plan plan1 = new Plan("2016年11月3日","月底可以购买回家的车票");
		Plan plan2 = new Plan("2016年11月3日","webService");

		list.add(plan2);
		list.add(plan1);
		return list;
	}
}

quartz  (Remindjob)

public class RemindJob implements Job {

	private RemindService service=new RemindService();
	@Override
	public void execute(JobExecutionContext arg0) throws JobExecutionException {
	service.printMessage();

	}
	public RemindService getService() {
		return service;
	}
	public void setService(RemindService service) {
		this.service = service;
	}

}

测试类

一分钟后只运行一次

public class MyTest {

	public static void tool() throws SchedulerException{
		//一 构建job
		JobDetail job = JobBuilder.newJob(RemindJob.class)//
						.withIdentity("job1","group1")//
						.build();

		//二 构建Trigger
		Date runTime = DateBuilder.evenMinuteDate(new Date());
		Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1")//
				  			.withSchedule(SimpleScheduleBuilder.simpleSchedule()
			                 .startAt(runTime)//
			                 .build();//

		//三  绑定job和rigger
		SchedulerFactory sf = new StdSchedulerFactory();
		Scheduler sched = sf.getScheduler();
		sched.scheduleJob(job,trigger);
		sched.start();
	} 

	public static void main(String[] args) throws SchedulerException {
		tool();
	}

　　

每两秒运行一次

public class MyTest {

	public static void tool() throws SchedulerException{
		//一 构建job
		JobDetail job = JobBuilder.newJob(RemindJob.class)//
						.withIdentity("job1","group1")//
						.build();

		//二 构建Trigger
		Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1")//
				  			.withSchedule(SimpleScheduleBuilder.simpleSchedule()
			                 .withIntervalInSeconds(2)
			                 .repeatForever())
			                 .startAt(new Date(System.currentTimeMillis()+2000))
			                 .build();//

		//三  绑定job和rigger
		SchedulerFactory sf = new StdSchedulerFactory();
		Scheduler sched = sf.getScheduler();
		sched.scheduleJob(job,trigger);
		sched.start();
	} 

	public static void main(String[] args) throws SchedulerException {
		tool();
	}
}

表达式

public static void tools() throws SchedulerException{
		//一 构建job
				JobDetail job = JobBuilder.newJob(RemindJob.class)//
								.withIdentity("job1","group1")//
								.build();

				//二 构建Trigger
				Trigger trigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1")//
						  			.withSchedule(CronScheduleBuilder.cronSchedule("0 0 12 * * ?"))
					                 .startAt(new Date()).build();

				//三  绑定job和rigger
				SchedulerFactory sf = new StdSchedulerFactory();
				Scheduler sched = sf.getScheduler();
				sched.scheduleJob(job,trigger);
				sched.start();
	}

	public static void main(String[] args) throws SchedulerException {
		tool();
		tools();
	}

表达式的特殊字符