我有一个运行Neo4j的Grails应用程序作为嵌入式图形，并且想要运行服务器应用程序。应用程序在我的本地计算机上使用run-app运行正常，以及使用run-war，但是当我将应用程序部署为Tomcat下的WAR文件时，我得到以下空指针异常。任何人都可以建议吗？
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1554)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:706)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.codehaus.groovy.grails.commons.spring.DefaultRuntimeSpringConfiguration.getApplicationContext(DefaultRuntimeSpringConfiguration.java:156)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.initializeContext(GrailsRuntimeConfigurator.java:188)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.configure(GrailsRuntimeConfigurator.java:168)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.configure(GrailsRuntimeConfigurator.java:127)
at org.codehaus.groovy.grails.web.context.GrailsConfigUtils.configureWebApplicationContext(GrailsConfigUtils.java:126)
at org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener.initWebApplicationContext(GrailsContextLoaderListener.java:109)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1682)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1621)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1550)
... 29 more
2014-12-05 15:33:13,769 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1682)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1621)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1550)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:706)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:762)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.codehaus.groovy.grails.commons.spring.DefaultRuntimeSpringConfiguration.getApplicationContext(DefaultRuntimeSpringConfiguration.java:156)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.initializeContext(GrailsRuntimeConfigurator.java:188)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.configure(GrailsRuntimeConfigurator.java:168)
at org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator.configure(GrailsRuntimeConfigurator.java:127)
at org.codehaus.groovy.grails.web.context.GrailsConfigUtils.configureWebApplicationContext(GrailsConfigUtils.java:126)
at org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener.initWebApplicationContext(GrailsContextLoaderListener.java:109)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2014-12-05 15:33:13,770 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
... 5 more
2014-12-05 15:33:13,771 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
... 5 more
2014-12-05 15:33:13,771 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2014-12-05 15:33:13,771 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
... 5 more
2014-12-05 15:33:13,780 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
... 5 more
2014-12-05 15:33:13,780 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2014-12-05 15:33:13,780 [localhost-startStop-1] ERROR StackTrace - Full Stack Trace:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverWrapper': Invocation of init method failed; nested exception is java.lang.NullPointerException
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:130)
at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:89)
... 5 more
bean serverWrapper在resources.groovy中定义：
serverWrapper(org.neo4j.server.WrappingNeoServerBootstrapper) { bean->
bean.constructorArgs = [ref('graphDatabaseService')]
bean.initMethod="start"
bean.destroyMethod="stop"