portlet 部署上的 nullpointerexception

Question

我的问题很清楚，因为我正在复制和粘贴一个在 liferay（一个测试 portlet）中工作的项目，我正在重命名所需的各种文件中的 portlet，并且我正在尝试部署它。它抛出一个 NullPointer，我真的不明白为什么。以下是错误：

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

我正在通过liferay的tomcat的deploy目录进行部署。

这不是关于空指针异常的问题，而是关于 Liferay 中的 portlet 部署的问题。

Answer 1

这可能是 Portlet 配置问题，因为您重命名了 Portlet 文件。可以给我们Portlet.xml和Liferay-portlet.xml的内容吗？