Eclipse安装scala插件导致maven pom editor打开报错

这段时间在抽空学习scala,学肯定就要先把IDE装好，选择就是Eclipse scala ide插件，http://scala-ide.org/

安装好打开pom文件：

看detail报如下异常：

java.lang.NullPointerException

at org.eclipse.jface.preference.PreferenceConverter.getColor(PreferenceConverter.java:205)

at scala.tools.eclipse.util.EclipseUtils$PimpedPreferenceStore.getColor(EclipseUtils.scala:51)

at scala.tools.eclipse.properties.syntaxcolouring.ScalaSyntaxClass.getStyleInfo(ScalaSyntaxClass.scala:57)

at scala.tools.eclipse.properties.syntaxcolouring.ScalaSyntaxClass.getTextAttribute(ScalaSyntaxClass.scala:30)

at scala.tools.eclipse.lexical.AbstractScalaScanner$class.scala$tools$eclipse$lexical$AbstractScalaScanner$$getTextAttribute(AbstractScalaScanner.scala:27)

at scala.tools.eclipse.lexical.AbstractScalaScanner$class.scala$tools$eclipse$lexical$AbstractScalaScanner$$createToken(AbstractScalaScanner.scala:18)

at scala.tools.eclipse.lexical.AbstractScalaScanner$$anonfun$getToken$1.apply(AbstractScalaScanner.scala:15)

at scala.tools.eclipse.lexical.AbstractScalaScanner$$anonfun$getToken$1.apply(AbstractScalaScanner.scala:15)

at scala.collection.MapLike$class.getOrElse(MapLike.scala:128)

at scala.collection.AbstractMap.getOrElse(Map.scala:58)

at scala.tools.eclipse.lexical.AbstractScalaScanner$class.getToken(AbstractScalaScanner.scala:15)

at org.scalaide.play2.routeeditor.lexical.AbstractRouteScanner.getToken(AbstractRouteScanner.scala:10)

at org.scalaide.play2.routeeditor.lexical.AbstractRouteScanner.<init>(AbstractRouteScanner.scala:11)

at org.scalaide.play2.templateeditor.lexical.TemplateDefaultScanner.<init>(TemplateDefaultScanner.scala:11)

at org.scalaide.play2.templateeditor.TemplateConfiguration.<init>(TemplateConfiguration.scala:51)

at org.scalaide.play2.templateeditor.sse.TemplateStructuredTextViewerConfiguration.org$scalaide$play2$templateeditor$sse$TemplateStructuredTextViewerConfiguration$$scalaConfiguration$lzycompute(TemplateStructuredTextViewerConfiguration.scala:26)

at org.scalaide.play2.templateeditor.sse.TemplateStructuredTextViewerConfiguration.org$scalaide$play2$templateeditor$sse$TemplateStructuredTextViewerConfiguration$$scalaConfiguration(TemplateStructuredTextViewerConfiguration.scala:26)

at org.scalaide.play2.templateeditor.sse.TemplateStructuredTextViewerConfiguration.getConfiguredContentTypes(TemplateStructuredTextViewerConfiguration.scala:77)

at org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration.getContentAssistant(StructuredTextViewerConfiguration.java:286)

at org.eclipse.wst.sse.ui.internal.StructuredTextViewer.configure(StructuredTextViewer.java:227)

at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3424)

at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:54)

at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:447)

at org.eclipse.wst.sse.ui.StructuredTextEditor.createPartControl(StructuredTextEditor.java:1516)

at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243)

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.eclipse.m2e.editor.pom.MavenPomEditor.addSourcePage(MavenPomEditor.java:619)

at org.eclipse.m2e.editor.pom.MavenPomEditor.addPages(MavenPomEditor.java:375)

at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:138)

at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:358)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:142)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:96)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:323)

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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)

at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:877)

at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:857)

at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:119)

at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:333)

at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:254)

at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:102)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:71)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:53)

at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:949)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:633)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:735)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$2(PartRenderingEngine.java:706)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$7.run(PartRenderingEngine.java:700)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:685)

at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$1.handleEvent(PartServiceImpl.java:90)

at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)

at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)

at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)

at org.eclipse.swt.widgets.Display.syncExec(Display.java:4688)

at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:205)

at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)

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:80)

at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58)

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:576)

at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:543)

at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:610)

at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:322)

at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1034)

at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3112)

at org.eclipse.ui.internal.WorkbenchPage.access$21(WorkbenchPage.java:3034)

at org.eclipse.ui.internal.WorkbenchPage$8.run(WorkbenchPage.java:3016)

at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)

at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3012)

at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2976)

at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2967)

at org.eclipse.ui.ide.IDE.openEditor(IDE.java:534)

at org.eclipse.ui.ide.IDE.openEditor(IDE.java:493)

at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:360)

at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:167)

at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:268)

at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:233)

at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:275)

at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:251)

at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:376)

at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:538)

at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:47)

at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:866)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)

at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)

at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:864)

at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1152)

at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1256)

at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:275)

at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:269)

at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:309)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)

at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)

at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)

at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)

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(Main.java:636)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)

at org.eclipse.equinox.launcher.Main.run(Main.java:1450)

at org.eclipse.equinox.launcher.Main.main(Main.java:1426)

google了一下，发现https://github.com/scala-ide/scala-ide-play2/issues/176

scala-ide-play2的bug导致的，升级 一下这个插件就完美解决了