Quartz.NET提供了触发器监听接口、任务监听接口、计划监听接口，基本上不怎么使用，除了任务监听接口有使用场景外，其它的监听器目前还未找到使用场景。
任务监听接口需要继承自IJobListener，，应用场景可以是：执行完一个任务，自动切换执行另一个任务。
具体代码如下：
public class SimpleJob1 : IJob{private ILog log = LogManager.GetLogger(typeof(SimpleJob1));public virtual void Execute(IJobExecutionContext context){JobKey jobKey = context.JobDetail.Key;log.InfoFormat("{0} 执行时间 {1}", jobKey, DateTime.Now.ToString());}}
public class SimpleJob2 : IJob{private ILog log = LogManager.GetLogger(typeof(SimpleJob2));public virtual void Execute(IJobExecutionContext context){JobKey jobKey = context.JobDetail.Key;log.InfoFormat("{0} 执行时间 {1}", jobKey, System.DateTime.Now.ToString());}} public class Job1Listener : IJobListener{private ILog log = LogManager.GetLogger(typeof (Job1Listener));public virtual string Name{get { return "job1_to_job2"; }}public virtual void JobToBeExecuted(IJobExecutionContext inContext){log.Info("监听器准备执行完毕");}public virtual void JobExecutionVetoed(IJobExecutionContext inContext){log.Info("监听器拒绝");}public virtual void JobWasExecuted(IJobExecutionContext inContext, JobExecutionException inException){log.Info("监听器执行完毕");IJobDetail job2 = JobBuilder.Create<SimpleJob2>().WithIdentity("job2").Build();ITrigger trigger = TriggerBuilder.Create().WithIdentity("job2Trigger").StartNow().Build();try{inContext.Scheduler.ScheduleJob(job2, trigger);}catch (SchedulerException e){log.Info("不能继续执行另一个任务job2");Console.Error.WriteLine(e.StackTrace);}}} public class ListenerExample{public static void Run(){ILog log = LogManager.GetLogger(typeof (ListenerExample));ISchedulerFactory sf = new StdSchedulerFactory();IScheduler sched = sf.GetScheduler();IJobDetail job = JobBuilder.Create<SimpleJob1>().WithIdentity("job1").Build();ITrigger trigger = TriggerBuilder.Create().WithIdentity("trigger1").StartNow().Build();IJobListener listener = new Job1Listener();IMatcher<JobKey> matcher = KeyMatcher<JobKey>.KeyEquals(job.Key);sched.ListenerManager.AddJobListener(listener, matcher);sched.ScheduleJob(job, trigger);sched.Start();log.Info("——- 开始计划 ————–");Thread.Sleep(TimeSpan.FromSeconds(30));sched.Shutdown(true);log.Info("——- 关闭计划 —————–");SchedulerMetaData metaData = sched.GetMetaData();log.Info(string.Format("执行次数{0}", metaData.NumberOfJobsExecuted));}}job1执行完毕会自动切换到job2。
即使爬到最高的山上，一次也只能脚踏实地地迈一步。
