OSGi包加載：標準java類的NoClassDefFoundError

我試圖在處女座上運行iDempiere。我加載了多個捆綁沒有問題。 org.adempiere.server和org.idempiere.webservices加載正常。但是，當加載org.adempiere.ui.zk捆綁包時，我在org.adempiere.base捆綁包中獲得NoClassDefFoundError。當加載org.adempiere.server時，基捆沒有引起任何問題，這也是需要它的。OSGi包加載：標準java類的NoClassDefFoundError

奇怪的是，它是javax.print.attribute.standard.MediaSize$NA類，它沒有找到，它是一個標準的Java類。

當執行clexport時，該類由org.eclipse.osgi導出當執行clload時，該類可以被其他包加載。

錯誤堆棧：

[2012-10-24 20:34:23.592] INFO fs-watcher     o.e.virgo.kernel.deployer.hot.HotDeploymentFileSystemListener  ApplicationConditionallyDeploying path 'D:\VIRGO-~1.REL\pickup\org.adempiere.ui.zk_1.0.0.v20121024-1809\'. 
[2012-10-24 20:34:23.777] INFO start-signalling-1   org.compiere.web.AdempiereMonitorFilter        
[2012-10-24 20:34:23.809] ERROR start-signalling-1   o.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/] StandardWrapper.Throwable java.lang.NoClassDefFoundError: javax/print/attribute/standard/MediaSize$NA 
    at org.compiere.util.Language.<clinit>(Language.java:101) 
    at org.compiere.util.Ini.<clinit>(Ini.java:85) 
    at org.compiere.util.WebEnv.initWeb(WebEnv.java:162) 
    at org.compiere.util.WebEnv.initWeb(WebEnv.java:129) 
    at org.compiere.web.AdempiereMonitor.init(AdempiereMonitor.java:1049) 
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185) 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080) 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895) 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871) 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) 
    at org.eclipse.gemini.web.tomcat.internal.TomcatServletContainer.startWebApplication(TomcatServletContainer.java:125) 
    at org.eclipse.gemini.web.internal.StandardWebApplication.start(StandardWebApplication.java:95) 
    at org.eclipse.virgo.web.core.internal.WebBundleLifecycleListener.onStarted(WebBundleLifecycleListener.java:122) 
    at org.eclipse.virgo.kernel.install.artifact.internal.StandardArtifactStateMonitor.onStarted(StandardArtifactStateMonitor.java:271) 
    at org.eclipse.virgo.kernel.install.artifact.internal.AbstractInstallArtifact.asyncStartSucceeded(AbstractInstallArtifact.java:319) 
    at org.eclipse.virgo.kernel.install.artifact.internal.AbstractInstallArtifact.access$0(AbstractInstallArtifact.java:316) 
    at org.eclipse.virgo.kernel.install.artifact.internal.AbstractInstallArtifact$StateMonitorSignal.signalSuccessfulCompletion(AbstractInstallArtifact.java:252) 
    at org.eclipse.virgo.kernel.core.internal.BundleStartTracker$1.run(BundleStartTracker.java:140) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
    at java.lang.Thread.run(Thread.java:722) 
Caused by: org.eclipse.virgo.kernel.osgi.framework.ExtendedClassNotFoundException: javax.print.attribute.standard.MediaSize$NA in KernelBundleClassLoader: [bundle=org.adempiere.base_1.0.0.v20121024-1809] 
    at org.eclipse.virgo.kernel.userregion.internal.equinox.KernelBundleClassLoader.loadClass(KernelBundleClassLoader.java:139) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356) 
    ... 25 common frames omitted 
Caused by: java.lang.ClassNotFoundException: javax.print.attribute.standard.MediaSize$NA 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501) 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421) 
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412) 
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107) 
    at org.eclipse.virgo.kernel.userregion.internal.equinox.KernelBundleClassLoader.loadClass(KernelBundleClassLoader.java:135) 
    ... 26 common frames omitted

任何想法可能是什麼原因？

來源

2012-10-25 Jeroen

我看到：

Caused by: java.lang.ClassNotFoundException: javax.print.attribute.standard.MediaSize$NA

這是一個CNFE不是NoClassDefFoundError的

在模塊「org.adempiere.base_1.0.0.v20121024-1809」你需要：

Import-Package: javax.print.attribute.standard

FWIW這是添加/合併到該模塊的MANIFEST.MF的條目。

來源

2012-10-25 10:01:05

我以爲我試過。看起來我沒有;-)非常感謝！ – Jeroen

OSGi包加載：標準java類的NoClassDefFoundError

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