Eclipse在停止Tomcat服务器时，出现警告如图所示，打开日志显示：
MESSAGE Conflicting handlers for org.eclipse.ui.window.pinEditor: {org.eclipse.ui.internal.handlers.PinEditorHandler} vs {org.eclipse.ui.internal.handlers.PinEditorHandler} in: PageSite
!STACK 0
java.lang.IllegalStateException: Conflicting handlers: {[org.eclipse.ui.internal.handlers.PinEditorHandler, for 'org.eclipse.ui.window.pinEditor', in WorkbenchContext, activeWhen=AndExpression [children=[WithExpression [variable=activeEditorId, children=[<instanceof value="java.lang.String"/>]], <test property="reuseEditor" plug-in activation: lazy/>]], active=true, sourcePriority=1074003968, participating=true]} vs {[org.eclipse.ui.internal.handlers.PinEditorHandler, for 'org.eclipse.ui.window.pinEditor', in WorkbenchContext, activeWhen=AndExpression [children=[WithExpression [variable=activeEditorId, children=[<instanceof value="java.lang.String"/>]], <test property="reuseEditor" plug-in activation: lazy/>]], active=true, sourcePriority=1074003968, participating=true]} in: PageSite
at org.eclipse.ui.internal.handlers.LegacyHandlerService$HandlerSelectionFunction.compute(LegacyHandlerService.java:145)
at org.eclipse.e4.core.internal.contexts.ValueComputation.get(ValueComputation.java:70)
at org.eclipse.e4.core.internal.contexts.EclipseContext.internalGet(EclipseContext.java:250)
at org.eclipse.e4.core.internal.contexts.EclipseContext.get(EclipseContext.java:237)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.lookUpHandler(HandlerServiceImpl.java:103)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.setEnabled(HandlerServiceHandler.java:75)
at org.eclipse.core.commands.Command.setEnabled(Command.java:856)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.canExecute(HandlerServiceImpl.java:179)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.canExecuteItem(HandledContributionItem.java:459)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem$1.run(AbstractContributionItem.java:516)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.e4.ui.workbench.renderers.swt.AbstractContributionItem.updateItemEnablement(AbstractContributionItem.java:557)
at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemUpdater.run(ToolItemUpdater.java:87)
at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemUpdater.updateContributionItems(ToolItemUpdater.java:77)
at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer.subscribeTopicUpdateToolbarEnablement(ToolBarManagerRenderer.java:313)
at jdk.internal.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:236)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4770)
at org.eclipse.e4.ui.workbench.swt.DisplayUISynchronize.syncExec(DisplayUISynchronize.java:34)
at org.eclipse.e4.ui.internal.di.UIEventObjectSupplier$UIEventHandler.handleEvent(UIEventObjectSupplier.java:64)
at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203)
at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:228)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:133)
at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
at org.eclipse.ui.internal.services.EvaluationService$1.changed(EvaluationService.java:84)
at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:105)
at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364)
at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application$3.changed(E4Application.java:789)
at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:105)
at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364)
at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379)
at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$5.changed(SelectionAggregator.java:219)
at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:105)
at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:364)
at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:379)
at org.eclipse.e4.ui.internal.workbench.SelectionServiceImpl.setSelection(SelectionServiceImpl.java:34)
at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.selectionChanged(CompatibilityPart.java:471)
at org.eclipse.ui.part.PageBookView$SelectionManager$1.run(PageBookView.java:241)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.ui.part.PageBookView$SelectionManager.selectionChanged(PageBookView.java:238)
at org.eclipse.ui.part.PageBookView$SelectionProvider.selectionChanged(PageBookView.java:296)
at org.eclipse.ui.part.PageBookView.pageSelectionChanged(PageBookView.java:847)
at org.eclipse.jface.viewers.Viewer$1.run(Viewer.java:151)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:148)
at org.eclipse.jface.text.TextViewer.fireSelectionChanged(TextViewer.java:2621)
at org.eclipse.jface.text.TextViewer.selectionChanged(TextViewer.java:2600)
at org.eclipse.jface.text.TextViewer$1.widgetSelected(TextViewer.java:1752)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4237)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1060)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1084)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1069)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:773)
at org.eclipse.swt.custom.StyledText.sendSelectionEvent(StyledText.java:8542)
at org.eclipse.swt.custom.StyledText.doSelection(StyledText.java:3365)
at org.eclipse.swt.custom.StyledText.doMouseSelection(StyledText.java:2944)
at org.eclipse.swt.custom.StyledText.doMouseLocationChange(StyledText.java:2927)
at org.eclipse.swt.custom.StyledText.handleMouseMove(StyledText.java:6371)
at org.eclipse.swt.custom.StyledText.lambda$28(StyledText.java:5937)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4237)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1060)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4054)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3626)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1150)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1041)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
项目是普通的Java Web项目，然后启动停止服务器似乎没啥问题。但每次停止时看着控制台像报错一样。
