部署Spring应用时出现NullPointerException

Question

我有一个可以在本地完美运行的Spring应用程序，但是当转移到dev时，在部署时会出现此错误：

INFO  [org.apache.catalina.core.ContainerBase] Initializing Spring root      WebApplicationContext
ERROR [org.apache.catalina.core.ContainerBase] Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener   
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception    parsing XML document from ServletContext resource [/WEB-INF/applicationContext.xml]; nested     exception is java.lang.NullPointerException
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:412)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3854)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4352)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:732)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
 ... more stacktrace ...
Caused by: java.lang.NullPointerException
at org.apache.log4j.Category.isEnabledFor(Category.java:746)
at org.apache.commons.logging.impl.Log4JLogger.isTraceEnabled(Log4JLogger.java:333)
at org.springframework.beans.factory.xml.PluggableSchemaResolver.resolveEntity(PluggableSchemaResolver.java:104)
at org.springframework.beans.factory.xml.DelegatingEntityResolver.resolveEntity(DelegatingEntityResolver.java:85)
at org.springframework.beans.factory.xml.ResourceEntityResolver.resolveEntity(ResourceEntityResolver.java:74)
at org.apache.xerces.util.EntityResolverWrapper.resolveEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.resolveEntity(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.findSchemaGrammar(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
... 146 more
)

它没有部署。 我已经检查了类路径，Spring和Log4j XML文件，并且看起来都很不错，而且我对寻找其他内容的想法也越来越少了。

有任何想法吗？ 任何意见将不胜感激:)

Answer 1

结案！ 事实证明，另一个spring应用程序未正确部署，我认为，由于日志引用的静态性质，导致bean工厂的静态日志使其他部署混乱。

希望这对其他人有帮助。 奇怪的日志消息无济于事。 谢谢你们的评论。