Eclipse 安裝了 Groovy 開發插件之後，雙擊打不開 .java 文件了

我在 Eclipse 裡打開我的 Java 項目，雙擊一個 .java 文件，遇到錯誤消息：Failed to create the part's control

錯誤的調用棧如下圖所示：

java.lang.NoClassDefFoundError: org/codehaus/groovy/eclipse/editor/GroovyAwareFoldingStructureProvider at org.codehaus.groovy.eclipse.GroovyPlugin1.getCurrentFoldingProvider(GroovyPlugin.java:182) at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.createSourceViewer(JavaEditor.java:1891) at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3369) at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:64) at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:454) at org.eclipse.jdt.internal.ui.javaeditor.JavaEditor.createPartControl(JavaEditor.java:3093) at org.eclipse.jdt.internal.ui.javaeditor.compilationunitEditor.createPartControl(compilationunitEditor.java:1521) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:158) at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:96) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:365) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:995) at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:960) at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:140) at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:403) at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:330) at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:202) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:91) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:60) at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:42) at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:132) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:994) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:658) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:762) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine2.run(PartRenderingEngine.java:727) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:711) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.lambda

at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38)
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:4779)
at org.eclipse.e4.ui.workbench.swt.displayUisynchronize.syncExec(displayUisynchronize.java:34)
at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
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.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:63)
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElementGen(ElementContainerImpl.java:170)
at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:188)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:660)
at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:624)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:787)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:401)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1261)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3208)
at org.eclipse.ui.internal.WorkbenchPage.lambda$9(WorkbenchPage.java:3112)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:74)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3110)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3080)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3071)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:569)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:524)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:367)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:172)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:288)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:254)
at org.eclipse.jdt.ui.actions.SelectiondispatchAction.dispatchRun(SelectiondispatchAction.java:274)
at org.eclipse.jdt.ui.actions.SelectiondispatchAction.run(SelectiondispatchAction.java:252)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:366)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$3.open(PackageExplorerPart.java:545)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:800)
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.StructuredViewer.fireOpen(StructuredViewer.java:797)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1116)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:296)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:331)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.display.sendEvent(display.java:4243)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1060)
at org.eclipse.swt.widgets.display.runDeferredEvents(display.java:4060)
at org.eclipse.swt.widgets.display.readAnddispatch(display.java:3632)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1154)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1045)
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:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
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)

參看 Eclipse 的 bug 列表： https://bugs.eclipse.org/bugs/show_bug.cgi?id=577806

It seems that you have installed the Groovy Development tools, or at least some of the plugins of that project.

Their project overrides the getCurrentFoldingProvider method using reflection, that causes this error. https://github.com/groovy/groovy-eclipse/blob/master/ide/org.codehaus.groovy.eclipse.ui/src/org/codehaus/groovy/eclipse/GroovyPlugin.java#L177

This issue is reported at the Groovy Eclipse plugin: https://github.com/groovy/groovy-eclipse/issues/1319

如果 Eclipse 安裝了 Eclipse Groovy Development Tools 和 Groovy compiler 3.0, 就會出現這個錯誤，因為 Groovy 插件通過 Java reflection 機制，複寫了 getCurrentFoldingProvider，導緻的 bug：

我把上圖所示的兩個黃色插件從 Eclipse 裡卸載，就又可以重新打開 Java 文件了：

更詳細的 Groovy plugin 信息：

Pivotal Software, Inc. Apache Groovy 2.5.14.v202103311613-e2103-RELEASE org.codehaus.groovy Pivotal Software, Inc. Groovy Ant support 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.ant Pivotal Software, Inc. Groovy AST Views 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.astviews Pivotal Software, Inc. Groovy Code Assist 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.codeassist Pivotal Software, Inc. Groovy Code browsing 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.codebrowsing Pivotal Software, Inc. Groovy Compiler Resolver 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.compilerResolver Pivotal Software, Inc. Groovy Core 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.core Pivotal Software, Inc. Groovy DSL support 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.dsl Pivotal Software, Inc. Groovy-Eclipse 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse Pivotal Software, Inc. Groovy-Eclipse integration 4.1.0.v202103311613-e2103-RELEASE org.eclipse.jdt.groovy.core Pivotal Software, Inc. Groovy Quick Fix 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.quickfix Pivotal Software, Inc. Groovy Refactoring 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.refactoring Pivotal Software, Inc. Groovy UI 4.1.0.v202103311613-e2103-RELEASE org.codehaus.groovy.eclipse.ui

如果想保留 Groovy 插件，解決方案參考如下：

In our project (Apache OFBiz) we still use Groovy 2.5.11, so I tried to install GDT 3.5.0. Eclipse refused and suggested something else. It worked. I have Now a mix of installed versions (3 4.50 and 1 4.40) but at least it works

原文地址：https://cloud.tencent.com/developer/article/2148864