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내 문제 si onclear, 필자는 liferay (테스트 포틀릿)에서 작동하는 프로젝트를 복사하여 붙여 넣기 때문에 필요한 다양한 파일에서 포틀릿의 이름을 바꾸고 배포하려고합니다. 그것. 그것은 NullPointer를 던지고 실제로 이유를 알 수 없습니다. 다음은 오류입니다.포틀릿 배포시 nullpointerexception
GRAVE: Exception sending context destroyed event to listener instance of class com.liferay.portal.kernel.servlet.SecurePluginContextListener
java.lang.ExceptionInInitializerError
at com.liferay.portal.kernel.deploy.hot.HotDeployEvent.initDependentServletContextNames(HotDeployEvent.java:97)
at com.liferay.portal.kernel.deploy.hot.HotDeployEvent.<init>(HotDeployEvent.java:53)
at com.liferay.portal.kernel.servlet.PluginContextListener.fireUndeployEvent(PluginContextListener.java:170)
at com.liferay.portal.kernel.servlet.SecurePluginContextListener.fireUndeployEvent(SecurePluginContextListener.java:294)
at com.liferay.portal.kernel.servlet.PluginContextListener.doPortalDestroy(PluginContextListener.java:132)
at com.liferay.portal.kernel.util.BasePortalLifecycle.portalDestroy(BasePortalLifecycle.java:31)
at com.liferay.portal.kernel.servlet.PluginContextListener.contextDestroyed(PluginContextListener.java:97)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:5063)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5723)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
at org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:1028)
at org.apache.catalina.startup.HostConfig.undeploy(HostConfig.java:1547)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1453)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1695)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:333)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1374)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1546)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1556)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1524)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at com.liferay.portal.kernel.util.PropsUtil.get(PropsUtil.java:32)
at com.liferay.portal.kernel.deploy.hot.DependencyManagementThreadLocal.<clinit>(DependencyManagementThreadLocal.java:40)
... 22 more
나는 liferay의 tomcat 배포 디렉토리를 통해 배포합니다.
nullpointer 예외는 아니지만 liferay의 포틀릿 배포에 대한 질문입니다.
[NullPointerException이란 무엇이며 어떻게 수정합니까?] (http://stackoverflow.com/questions/218384/what-is-a-nullpointerexception-and-how-do-i-fix -it) – Sanjeev
널 포인터가 무엇인지 알기 때문에이 문맥에서 왜 던져 졌는지 알 수 없다 ... – softwareplay
그걸 위해서'PropsUtil.java'로 가서'line 32'에있는 것을보아야한다. NPE 일으키는 – Sanjeev