我在WebSphere中运行的Web应用程序使用Java 2 Security，并且有权访问作为已挂载的NFS共享的目录。通常，外翻工作正常。但有时启动应用程序会失败：
java.security.AccessControlException: Access denied ("java.io.FilePermission" "/mounted/nfs_share" "read")
目前我在这种情况下所能做的就是重启服务器。
我的环境的一些细节：
造成这种影响的原因是什么？如果NFS共享暂时不可用（例如网络问题），我会在实际访问它时预期IOExceptions，但事先没有SecurityExceptions。
这是完整的堆栈跟踪：
[4/15/16 13:49:45:565 CEST] 00000078 webapp E com.ibm.ws.webcontainer.webapp.WebApp notifyServletContextCreated SRVE0283E: Exception caught while initializing context: {0}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.tsystems.cc4.service.invocation.spring.InvocationWrapperBeanPostProcessor#0' defined in class path resource [component-service-zip.xml]: Invocation of init method failed; nested exception is java.security.AccessControlException: Access denied ("java.io.FilePermission" "/mounted/nfs_share" "read")
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:240)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:682)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:522)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at com.ibm.ws.webcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:1707)
at com.ibm.ws.webcontainer.webapp.WebAppImpl.initialize(WebAppImpl.java:411)
at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:88)
at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:170)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:904)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:789)
at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:427)
at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:719)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1177)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1382)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:639)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:971)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:776)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$5.run(ApplicationMgrImpl.java:2195)
at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:5477)
at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5603)
at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2200)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:435)
at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:378)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.access$500(CompositionUnitMgrImpl.java:126)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl$CUInitializer.run(CompositionUnitMgrImpl.java:984)
at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:502)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1881)
Caused by: java.security.AccessControlException: Access denied ("java.io.FilePermission" "/mounted/nfs_share" "read")
at java.security.AccessController.throwACE(AccessController.java:121)
at java.security.AccessController.checkPermission(AccessController.java:194)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:563)
at com.ibm.ws.security.core.SecurityManager.checkPermission(SecurityManager.java:208)
at java.lang.SecurityManager.checkRead(SecurityManager.java:902)
at java.io.File.exists(File.java:820)
at org.apache.commons.io.FileUtils.forceMkdir(FileUtils.java:2367)
at com.tsystems.cc4.common.attachment.LocalFileAccessor.getCanonicalBaseDirectory(LocalFileAccessor.java:197)
at com.tsystems.cc4.common.attachment.LocalFileAccessor.<init>(LocalFileAccessor.java:92)
at com.tsystems.cc4.common.attachment.LocalFileAccessor.<init>(LocalFileAccessor.java:112)
at com.tsystems.cc4.common.attachment.AttachmentManagerFactory.createAttachmentManager(AttachmentManagerFactory.java:40)
at com.tsystems.cc4.service.invocation.spring.AbstractInvocationWrapperBeanPostProcessor.afterPropertiesSet(AbstractInvocationWrapperBeanPostProcessor.java:78)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$6.run(AbstractAutowireCapableBeanFactory.java:1627)
at java.security.AccessController.doPrivileged(AccessController.java:452)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1624)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 37 more