求助：quartz在spring中调用，启动服务器后报错
在spring中加入quartz的配置，启动服务器以后后台报错，请问这是什么原因？
Caused by: java.lang.NoClassDefFoundError: org/quartz/JobExecutionException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
at java.lang.Class.getDeclaredMethods(Class.java:1763)
at java.beans.Introspector$1.run(Introspector.java:1265)
at java.security.AccessController.doPrivileged(Native Method)
at java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1263)
at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1129)
at java.beans.Introspector.getBeanInfo(Introspector.java:387)
at java.beans.Introspector.getBeanInfo(Introspector.java:159)
at org.springframework.beans.CachedIntrospectionResults.<init>(CachedIntrospectionResults.java:244)
at org.springframework.beans.CachedIntrospectionResults.forClass(CachedIntrospectionResults.java:143)
at org.springframework.beans.BeanWrapperImpl.setIntrospectionClass(BeanWrapperImpl.java:236)
at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:194)
at org.springframework.beans.BeanWrapperImpl.setWrappedInstance(BeanWrapperImpl.java:177)
at org.springframework.beans.BeanWrapperImpl.<init>(BeanWrapperImpl.java:130)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:733)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:720)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:386)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:144)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:279)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:360)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:241)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3795)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4252)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.st