org.eclipse.ui.part.MultiPageEditorSite 无法转换为 org.eclipse.ui.internal.PartSite
org.eclipse.ui.part.MultiPageEditorSite cannot be cast to org.eclipse.ui.internal.PartSite
我正在 Eclipse 4 上移植 eclipse 3 RCP。我收到运行时异常 java.lang.ClassCastException
这是代码片段
public FamilyEditorSite(MultiPageEditorPart multiPageEditor, IEditorPart editor) {
Assert.isNotNull (multiPageEditor);
Assert.isNotNull (editor);
this.multiPageEditor = multiPageEditor;
this.editor = editor;
// Point for runtime exception
PartSite site = (PartSite) this.multiPageEditor.getSite();
//IWorkbenchPartSite site = multiPageEditor.getSite ();
IServiceLocatorCreator slc = (IServiceLocatorCreator )site.getService (IServiceLocatorCreator.class);
context = site.getModel().getContext().createChild("FamilyEditorSite");
....
....
}
此代码类似于库 class MultiPageEditorSite。
但我仍然得到如下运行时异常
java.lang.ClassCastException: org.eclipse.ui.part.MultiPageEditorSite
cannot be cast to org.eclipse.ui.internal.PartSite
at org.acmestudio.ui.editor.family.FamilyEditorSite.(FamilyEditorSite.java:136)
at org.acmestudio.ui.editor.family.FamilyEditor.createSite(FamilyEditor.java:653)
at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:236)
at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:325)
at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:213)
at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:308)
at org.acmestudio.ui.editor.family.FamilyEditor.addPages(FamilyEditor.java:177)
at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:138)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362)
at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.reconfigurePages(AcmeStudioMultiPageEditor.java:393)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.doPartInitialization(AcmeStudioMultiPageEditor.java:660)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.access(AcmeStudioMultiPageEditor.java:548)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.execute(AcmeStudioMultiPageEditor.java:804)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:106)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2157)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.createPages(AcmeStudioMultiPageEditor.java:809)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:141)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:327)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:888)
at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:869)
at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:120)
at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:337)
at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:258)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55)
at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:127)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:983)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:766)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access(PartRenderingEngine.java:737)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:731)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:715)
at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1246)
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.handleEvent(LazyStackRenderer.java:69)
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.run(UIEventHandler.java:40)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4732)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.syncExec(E4Application.java:218)
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36)
at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81)
at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:59)
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:488)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:454)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:705)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:392)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1145)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3210)
at org.eclipse.ui.internal.WorkbenchPage.access(WorkbenchPage.java:3125)
at org.eclipse.ui.internal.WorkbenchPage.run(WorkbenchPage.java:3107)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3102)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3066)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3056)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:541)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:500)
at org.eclipse.ui.actions.OpenFileAction.openFile(OpenFileAction.java:99)
at org.eclipse.ui.actions.OpenSystemEditorAction.run(OpenSystemEditorAction.java:99)
at org.eclipse.ui.views.navigator.OpenActionGroup.runDefaultAction(OpenActionGroup.java:133)
at org.eclipse.ui.views.navigator.MainActionGroup.runDefaultAction(MainActionGroup.java:330)
at org.eclipse.ui.views.navigator.ResourceNavigator.handleOpen(ResourceNavigator.java:787)
at org.eclipse.ui.views.navigator.ResourceNavigator.open(ResourceNavigator.java:499)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:853)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:850)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1142)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1249)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272)
at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4199)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
java.lang.IllegalArgumentException: Index out of bounds
at org.eclipse.swt.SWT.error(SWT.java:4422)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
at org.eclipse.swt.custom.CTabFolder.getItem(CTabFolder.java:836)
at org.acmestudio.ui.editor.family.FamilyEditor.pageChange(FamilyEditor.java:504)
at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1101)
at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:603)
at org.acmestudio.ui.editor.family.FamilyEditor.setActivePage(FamilyEditor.java:581)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:366)
at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.reconfigurePages(AcmeStudioMultiPageEditor.java:393)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.doPartInitialization(AcmeStudioMultiPageEditor.java:660)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.access(AcmeStudioMultiPageEditor.java:548)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.execute(AcmeStudioMultiPageEditor.java:804)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:106)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2157)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153)
at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.createPages(AcmeStudioMultiPageEditor.java:809)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:141)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:327)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:888)
at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:869)
at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:120)
at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:337)
at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:258)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73)
at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55)
at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:127)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:983)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:766)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access(PartRenderingEngine.java:737)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:731)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:715)
at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1246)
at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.handleEvent(LazyStackRenderer.java:69)
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.run(UIEventHandler.java:40)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4732)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.syncExec(E4Application.java:218)
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36)
at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81)
at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:59)
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:488)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:454)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:705)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:392)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1145)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3210)
at org.eclipse.ui.internal.WorkbenchPage.access(WorkbenchPage.java:3125)
at org.eclipse.ui.internal.WorkbenchPage.run(WorkbenchPage.java:3107)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3102)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3066)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3056)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:541)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:500)
at org.eclipse.ui.actions.OpenFileAction.openFile(OpenFileAction.java:99)
at org.eclipse.ui.actions.OpenSystemEditorAction.run(OpenSystemEditorAction.java:99)
at org.eclipse.ui.views.navigator.OpenActionGroup.runDefaultAction(OpenActionGroup.java:133)
at org.eclipse.ui.views.navigator.MainActionGroup.runDefaultAction(MainActionGroup.java:330)
at org.eclipse.ui.views.navigator.ResourceNavigator.handleOpen(ResourceNavigator.java:787)
at org.eclipse.ui.views.navigator.ResourceNavigator.open(ResourceNavigator.java:499)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:853)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:850)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1142)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1249)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272)
at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4199)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
java.lang.NullPointerException
at org.acmestudio.armani.editor.rules.RuleHelper.shouldEvaluate(RuleHelper.java:139)
at org.acmestudio.armani.editor.rules.IgnoreRuleInterceptor.adjustResult(IgnoreRuleInterceptor.java:15)
at org.acmestudio.acme.type.verification.TypeChecker.performTypecheck(TypeChecker.java:206)
at org.acmestudio.acme.type.verification.TypeChecker.runTypecheckLoop(TypeChecker.java:342)
at org.acmestudio.acme.type.verification.SimpleModelTypeChecker.runEvaluationLoopOnce(SimpleModelTypeChecker.java:455)
at org.acmestudio.eclipse.core.environment.TypeCheckingJob.run(TypeCheckingJob.java:34)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
org.eclipse.ui.internal.PartSite 在 internal 包中，您不应该尝试使用它。
MultiPageEditorSite 不是基于 PartSite 所以你不能从一个转换到另一个。
您可以通过以下方式获得零件的 IEclipseContext：
IEclipseContext context = (IEclipseContext)getSite().getService(IEclipseContext.class)
我正在 Eclipse 4 上移植 eclipse 3 RCP。我收到运行时异常 java.lang.ClassCastException
这是代码片段
public FamilyEditorSite(MultiPageEditorPart multiPageEditor, IEditorPart editor) {
Assert.isNotNull (multiPageEditor);
Assert.isNotNull (editor);
this.multiPageEditor = multiPageEditor;
this.editor = editor;
// Point for runtime exception
PartSite site = (PartSite) this.multiPageEditor.getSite();
//IWorkbenchPartSite site = multiPageEditor.getSite ();
IServiceLocatorCreator slc = (IServiceLocatorCreator )site.getService (IServiceLocatorCreator.class);
context = site.getModel().getContext().createChild("FamilyEditorSite");
....
....
}
此代码类似于库 class MultiPageEditorSite。
但我仍然得到如下运行时异常
java.lang.ClassCastException: org.eclipse.ui.part.MultiPageEditorSite cannot be cast to org.eclipse.ui.internal.PartSite at org.acmestudio.ui.editor.family.FamilyEditorSite.(FamilyEditorSite.java:136) at org.acmestudio.ui.editor.family.FamilyEditor.createSite(FamilyEditor.java:653) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:236) at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:325) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:213) at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:308) at org.acmestudio.ui.editor.family.FamilyEditor.addPages(FamilyEditor.java:177) at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:138) at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.reconfigurePages(AcmeStudioMultiPageEditor.java:393) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.doPartInitialization(AcmeStudioMultiPageEditor.java:660) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.access(AcmeStudioMultiPageEditor.java:548) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.execute(AcmeStudioMultiPageEditor.java:804) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:106) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2157) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.createPages(AcmeStudioMultiPageEditor.java:809) at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:141) at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:327) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:888) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:869) at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:120) at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:337) at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:258) at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:127) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:983) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:766) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access(PartRenderingEngine.java:737) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:731) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:715) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1246) at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.handleEvent(LazyStackRenderer.java:69) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.run(UIEventHandler.java:40) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4732) at org.eclipse.e4.ui.internal.workbench.swt.E4Application.syncExec(E4Application.java:218) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:59) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:488) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:454) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:705) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:392) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1145) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3210) at org.eclipse.ui.internal.WorkbenchPage.access(WorkbenchPage.java:3125) at org.eclipse.ui.internal.WorkbenchPage.run(WorkbenchPage.java:3107) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3102) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3066) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3056) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:541) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:500) at org.eclipse.ui.actions.OpenFileAction.openFile(OpenFileAction.java:99) at org.eclipse.ui.actions.OpenSystemEditorAction.run(OpenSystemEditorAction.java:99) at org.eclipse.ui.views.navigator.OpenActionGroup.runDefaultAction(OpenActionGroup.java:133) at org.eclipse.ui.views.navigator.MainActionGroup.runDefaultAction(MainActionGroup.java:330) at org.eclipse.ui.views.navigator.ResourceNavigator.handleOpen(ResourceNavigator.java:787) at org.eclipse.ui.views.navigator.ResourceNavigator.open(ResourceNavigator.java:499) at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48) at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:853) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178) at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:850) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1142) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1249) at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278) at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272) at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4199) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) java.lang.IllegalArgumentException: Index out of bounds at org.eclipse.swt.SWT.error(SWT.java:4422) at org.eclipse.swt.SWT.error(SWT.java:4356) at org.eclipse.swt.SWT.error(SWT.java:4327) at org.eclipse.swt.custom.CTabFolder.getItem(CTabFolder.java:836) at org.acmestudio.ui.editor.family.FamilyEditor.pageChange(FamilyEditor.java:504) at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1101) at org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:603) at org.acmestudio.ui.editor.family.FamilyEditor.setActivePage(FamilyEditor.java:581) at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:366) at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.reconfigurePages(AcmeStudioMultiPageEditor.java:393) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.doPartInitialization(AcmeStudioMultiPageEditor.java:660) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.access(AcmeStudioMultiPageEditor.java:548) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.execute(AcmeStudioMultiPageEditor.java:804) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:106) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:466) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:374) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2157) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2153) at org.acmestudio.ui.editor.AcmeStudioMultiPageEditor.createPages(AcmeStudioMultiPageEditor.java:809) at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:362) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:141) at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:327) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:888) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:869) at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:120) at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:337) at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:258) at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:127) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:983) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:662) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:766) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access(PartRenderingEngine.java:737) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:731) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:715) at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1246) at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.handleEvent(LazyStackRenderer.java:69) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.run(UIEventHandler.java:40) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:187) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:156) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4732) at org.eclipse.e4.ui.internal.workbench.swt.E4Application.syncExec(E4Application.java:218) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:59) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374) at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:171) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:488) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:454) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:705) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:392) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1145) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3210) at org.eclipse.ui.internal.WorkbenchPage.access(WorkbenchPage.java:3125) at org.eclipse.ui.internal.WorkbenchPage.run(WorkbenchPage.java:3107) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3102) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3066) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3056) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:541) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:500) at org.eclipse.ui.actions.OpenFileAction.openFile(OpenFileAction.java:99) at org.eclipse.ui.actions.OpenSystemEditorAction.run(OpenSystemEditorAction.java:99) at org.eclipse.ui.views.navigator.OpenActionGroup.runDefaultAction(OpenActionGroup.java:133) at org.eclipse.ui.views.navigator.MainActionGroup.runDefaultAction(MainActionGroup.java:330) at org.eclipse.ui.views.navigator.ResourceNavigator.handleOpen(ResourceNavigator.java:787) at org.eclipse.ui.views.navigator.ResourceNavigator.open(ResourceNavigator.java:499) at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48) at org.eclipse.jface.viewers.StructuredViewer.run(StructuredViewer.java:853) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178) at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:850) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1142) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1249) at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278) at org.eclipse.jface.util.OpenStrategy.access(OpenStrategy.java:272) at org.eclipse.jface.util.OpenStrategy.handleEvent(OpenStrategy.java:313) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4199) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:331) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) java.lang.NullPointerException at org.acmestudio.armani.editor.rules.RuleHelper.shouldEvaluate(RuleHelper.java:139) at org.acmestudio.armani.editor.rules.IgnoreRuleInterceptor.adjustResult(IgnoreRuleInterceptor.java:15) at org.acmestudio.acme.type.verification.TypeChecker.performTypecheck(TypeChecker.java:206) at org.acmestudio.acme.type.verification.TypeChecker.runTypecheckLoop(TypeChecker.java:342) at org.acmestudio.acme.type.verification.SimpleModelTypeChecker.runEvaluationLoopOnce(SimpleModelTypeChecker.java:455) at org.acmestudio.eclipse.core.environment.TypeCheckingJob.run(TypeCheckingJob.java:34) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
org.eclipse.ui.internal.PartSite 在 internal 包中，您不应该尝试使用它。
MultiPageEditorSite 不是基于 PartSite 所以你不能从一个转换到另一个。
您可以通过以下方式获得零件的 IEclipseContext：
IEclipseContext context = (IEclipseContext)getSite().getService(IEclipseContext.class)