Java 石英调度器2.x：当我停止tomcat服务器时，石英产生了这个错误

在我的应用程序中，我使用Quartz scheduler 2.1.x版本 当我停止tomcat服务器时 我有一个错误：

19 mai 2014 15:52:48 org.apache.coyote.http11.Http11Protocol destroy
INFO: Arrêt de Coyote HTTP/1.1 sur http-8080
Exception in thread "Quartz Shutdown-Hook CronTriggers" java.lang.NullPointerException
Exception in thread "Quartz Shutdown-Hook CronTriggers" at org.apache.log4j.helpers.PatternConverter.spacePad(PatternConverter.java:107)
at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:80)
at org.apache.log4j.PatternLayout.format(PatternLayout.java:506)
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
at org.apache.log4j.Category.callAppenders(Category.java:206)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.log(Category.java:856)
at org.slf4j.impl.Log4jLoggerAdapter.info(Log4jLoggerAdapter.java:305)
at org.quartz.plugins.management.ShutdownHookPlugin$1.run(ShutdownHookPlugin.java:125)
java.lang.NullPointerException
at org.apache.log4j.helpers.PatternConverter.spacePad(PatternConverter.java:107)
at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:80)
at org.apache.log4j.PatternLayout.format(PatternLayout.java:506)
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
at rg.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
at org.apache.log4j.Category.callAppenders(Category.java:206)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.log(Category.java:856)
at org.slf4j.impl.Log4jLoggerAdapter.info(Log4jLoggerAdapter.java:305)
at org.quartz.plugins.management.ShutdownHookPlugin$1.run(ShutdownHookPlugin.java:125) 

欢迎任何帮助。

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谢谢

不要用关机挂钩来阻止石英。在web应用程序中使用ServletContextListener。这也将停止web应用程序重新加载时的内存泄漏（一个原因）。

Hi Mark，感谢回复您的解决方案，它工作得很好，但当我实现接口“ServletContextListener”时并在web.xml中添加了一个列表器我在启动时遇到了这个错误：20 mai 2014 09:44:08 org.apache.catalina.core.StandardContext start GRAVE:error listenerStart 20 mai 2014 09:44:08 org.apache.catalina.core.StandardContext start GRAVE:Erreur de démarage du contexte[/servlet]suite aux erreurs précédentesjava.lang.UnsupportedOperationException:Erreur:java.lang.NullPointerException位于fr.pac.Router.contextInitialized（Router.java:99）org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4206）org.apache.catalina.core.StandardContext.start（StandardContext.java:4705）在org.apache.catalina.core.ContainerBase.addChildInternal（ContainerBase.java:799）在org.apache.catalina.core.ContainerBase.addChild（ContainerBase.java:779）在org.apache.catalina.core.StandardHost.addChild（StandardHost.java:601）上