RAD / Eclipse配置JPA实体失败

Question

以前在“配置JPA实体...”时运行portlet抛出错误（昨天成功使用了此功能）。消息如下

org.eclipse.core.runtime.CoreException: org/eclipse/jpt/ui/internal/utility/SynchronousUiCommandExecutor
    at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard.performFinish(Unknown Source)
    at org.eclipse.jface.wizard.WizardDialog.finishPressed(Unknown Source)
    at org.eclipse.jface.wizard.WizardDialog.buttonPressed(Unknown Source)
    at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Unknown Source)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.jface.window.Window.runEventLoop(Unknown Source)
    at org.eclipse.jface.window.Window.open(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.launcher.AbstractDialogLauncher.launch(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.launcher.AbstractEntityConfigWizardLauncher.launch(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.action.EntityConfigAction.run(Unknown Source)
    at org.eclipse.ui.internal.PluginAction.runWithEvent(Unknown Source)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(Unknown Source)
    at org.eclipse.jface.action.ActionContributionItem.access$2(Unknown Source)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Unknown Source)
    at org.eclipse.ui.internal.Workbench.runUI(Unknown Source)
    at org.eclipse.ui.internal.Workbench.access$4(Unknown Source)
    at org.eclipse.ui.internal.Workbench$7.run(Unknown Source)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Unknown Source)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Unknown Source)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Unknown Source)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(Unknown Source)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(Unknown Source)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Unknown Source)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Unknown Source)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Unknown Source)
    at org.eclipse.equinox.launcher.Main.basicRun(Unknown Source)
    at org.eclipse.equinox.launcher.Main.run(Unknown Source)
    at org.eclipse.equinox.launcher.Main.main(Unknown Source)
Contains: org/eclipse/jpt/ui/internal/utility/SynchronousUiCommandExecutor
Contains: org/eclipse/jpt/ui/internal/utility/SynchronousUiCommandExecutor
Contains: org/eclipse/jpt/ui/internal/utility/SynchronousUiCommandExecutor
java.lang.NoClassDefFoundError: org/eclipse/jpt/ui/internal/utility/SynchronousUiCommandExecutor
    at com.ibm.jee.jpa.entity.config.internal.codegen.EntityConfigCodeGenOperation.run(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.wizard.entityconfig.operation.JpaEntityConfigWizardDelegateOperation.execute(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.wizard.entityconfig.operation.JpaBaseWizardOperation$WizardWorkspaceBatchOperation.run(Unknown Source)
    at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(Unknown Source)
    at org.eclipse.jdt.internal.core.JavaModelOperation.run(Unknown Source)
    at org.eclipse.core.internal.resources.Workspace.run(Unknown Source)
    at org.eclipse.jdt.core.JavaCore.run(Unknown Source)
    at org.eclipse.jdt.core.JavaCore.run(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.wizard.entityconfig.operation.JpaBaseWizardOperation$WizardWorkspaceBatchJob.run(Unknown Source)
    at com.ibm.jee.jpa.entity.config.internal.wizard.entityconfig.operation.JpaBaseWizardOperation.execute(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl$1.run(Unknown Source)
    at org.eclipse.core.internal.resources.Workspace.run(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.runOperation(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.doExecute(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.executeImpl(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.cacheThreadAndContinue(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.DataModelPausibleOperationImpl.execute(Unknown Source)
    at org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard$1CatchThrowableRunnableWithProgress.run(Unknown Source)
    at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(Unknown Source)

一些上下文 - 在RAD中开发的portlet应用程序作为JPA的基本JSF功能的学习演示。使用RAD 8.5，JSF 2.0和primefaces。最近的变化是导入primefaces功能并链接到jsf组件。 JPA连接应该仍然有效，因为网页仍在提取数据（重启后，不应该缓存）。

任何想法..