Quartz.net官方开发指南 第一课：使用Quartz.net 推荐

使用scheduler之前应首先实例化它。使用SchedulerFactory可以完成scheduler的实例化。用户可直接地实例化这个工厂类并且直接使用工厂的实例（例如下面的例子）。
一旦一个scheduler被实例化，它就可以被启动(start),并且处于驻留模式，直到被关闭(shutdown)。注意，一旦scheduler被关闭（shutdown）,则它不能再重新启动，除非重新实例化它。除非scheduler 被启动或者不处于暂停状态，否则触发器不会被触发(任务也不能被执行)。
下面是一个代码片断，这个代码片断实例化并且启动了一个scheduler，接着将一个要执行的任务纳入了进程。


using Common.Logging;




namespace Quartz.Examples.Example1






{






/**//// <summary>


/// This is just a simple job that says "Hello" to the world.


/// </summary>


/// <author>Bill Kratzer</author>


public class HelloJob : IJob






{




private static ILog _log = LogManager.GetLogger(typeof(HelloJob));






/**//// <summary>


/// Empty constructor for job initilization


/// <p>


/// Quartz requires a public empty constructor so that the


/// scheduler can instantiate the class whenever it needs.


/// </p>


/// </summary>


public HelloJob()






{


}






/**//// <summary>


/// Called by the <see cref="IScheduler" /> when a


/// <see cref="Trigger" /> fires that is associated with


/// the <see cref="IJob" />.


/// </summary>


public virtual void Execute(JobExecutionContext context)






{




// Say Hello to the World and display the date/time


_log.Info(string.Format("Hello World! - {0}", System.DateTime.Now.ToString("r")));


}




}


}


ILog log = LogManager.GetLogger(typeof(SimpleExample));




log.Info("------- Initializing ----------------------");




// First we must get a reference to a scheduler


ISchedulerFactory sf = new StdSchedulerFactory();


IScheduler sched = sf.GetScheduler();




log.Info("------- Initialization Complete -----------");




log.Info("------- Scheduling Jobs -------------------");




// computer a time that is on the next round minute


DateTime runTime = TriggerUtils.GetEvenMinuteDate(new NullableDateTime(DateTime.Now));




// define the job and tie it to our HelloJob class


JobDetail job = new JobDetail("job1", "group1", typeof(HelloJob));




// Trigger the job to run on the next round minute


SimpleTrigger trigger = new SimpleTrigger("trigger1", "group1", runTime);




// Tell quartz to schedule the job using our trigger


sched.ScheduleJob(job, trigger);


log.Info(string.Format("{0} will run at: {1}", job.FullName, runTime.ToString("r")));




// Start up the scheduler (nothing can actually run until the


// scheduler has been started)


sched.Start();


log.Info("------- Started Scheduler -----------------");




// wait long enough so that the scheduler as an opportunity to


// run the job!


log.Info("------- Waiting 90 seconds

-------------");




// wait 90 seconds to show jobs


Thread.Sleep(90 * 1000);




// shut down the scheduler


log.Info("------- Shutting Down ---------------------");


sched.Shutdown(true);


log.Info("------- Shutdown Complete -----------------");
如您所见，使用quartz相当简单，在第二课中，我们将给出一个Job和Trigger的快速预览，这样就能够充分理解这个例子。
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