Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.quartz.impl.StdSchedulerFactory.<init>(StdSchedulerFactory.java:303) at com.example.singleQuartz.SingleQuartzServer.main(SingleQuartzServer.java:15) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 7 more
解决完上面日志包的问题，我们运行上面程序可以看到正常的调度结果如下。
[main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started. Hello, Quartz! - executing its JOB at Thu Dec 22 19:40:30 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:40:40 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:40:50 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:00 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:10 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:20 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:30 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:40 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:41:50 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:42:00 CST 2016 by DEFAULT.job Hello, Quartz! - executing its JOB at Thu Dec 22 19:42:10 CST 2016 by DEFAULT.job [main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutting down. [main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED paused. [main] INFO org.quartz.core.QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutdown complete.
⑤任务调度的多线程
Scheduler是存在多对多的关系，由于线程池的存在，调度器实现多线程并发执行任务调度，直接看下面demo就能明白。