使用Eclipse删除文件时出现异常

Question

在Eclipse（版本2023.9）中删除文件（或包等）时，出现如下图所示的unexcepted异常。

在Eclipse的错误日志中，它显示为插件“org.eclipse.ltk.ui.refactoring”的“内部错误”，异常堆栈跟踪为：

java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:395) at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.run(RefactoringWizardDialog2.java:324) at org.eclipse.ltk.ui.refactoring.RefactoringWizard.internalPerformFinish(RefactoringWizard.java:636) at org.eclipse.ltk.ui.refactoring.UserInputWizardPage.performFinish(UserInputWizardPage.java:148) at org.eclipse.jdt.internal.ui.refactoring.reorg.DeleteWizard$DeleteInputPage.performFinish(DeleteWizard.java:176) at org.eclipse.ltk.ui.refactoring.RefactoringWizard.performFinish(RefactoringWizard.java:710) at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.okPressed(RefactoringWizardDialog2.java:450) at org.eclipse.jface.dialogs.Dialog.buttonPressed(Dialog.java:468) at org.eclipse.jface.dialogs.Dialog.lambda$0(Dialog.java:619) at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84) 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:5855) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1529) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:5065) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4517) at org.eclipse.jface.window.Window.runEventLoop(Window.java:823) at org.eclipse.jface.window.Window.open(Window.java:799) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.lambda$0(RefactoringWizardOpenOperation.java:190) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:209) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:126) at org.eclipse.jdt.internal.ui.refactoring.actions.RefactoringStarter.activate(RefactoringStarter.java:41) at org.eclipse.jdt.internal.ui.refactoring.UserInterfaceStarter.activate(UserInterfaceStarter.java:65) at org.eclipse.jdt.internal.corext.refactoring.RefactoringExecutionStarter.startDeleteRefactoring(RefactoringExecutionStarter.java:290) at org.eclipse.jdt.internal.ui.refactoring.reorg.DeleteAction.run(DeleteAction.java:205) 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.jface.action.Action.runWithEvent(Action.java:474) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:580) at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:414) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5855) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1529) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:5065) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4517) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:645) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:342) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:552) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:171) 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:402) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:651) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588) at org.eclipse.equinox.launcher.Main.run(Main.java:1459) at org.eclipse.equinox.launcher.Main.main(Main.java:1432) Caused by: java.lang.NoClassDefFoundError: org/eclipse/core/resources/undo/snapshot/ResourceSnapshotFactory at org.eclipse.jdt.internal.corext.refactoring.changes.UndoablePackageDeleteChange.perform(UndoablePackageDeleteChange.java:46) at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:281) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.access$0(DynamicValidationStateChange.java:1) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.lambda$0(DynamicValidationStateChange.java:105) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:41) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:742) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:5971) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.perform(DynamicValidationStateChange.java:106) at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:281) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.lambda$0(PerformChangeOperation.java:258) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.executeChange(PerformChangeOperation.java:295) at org.eclipse.ltk.internal.ui.refactoring.UIPerformChangeOperation.executeChange(UIPerformChangeOperation.java:94) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:219) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:89) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) Caused by: java.lang.ClassNotFoundException: org.eclipse.core.resources.undo.snapshot.ResourceSnapshotFactory cannot be found by org.eclipse.jdt.core.manipulation_1.20.0.v20231115-2128 ... 21 more Root exception: java.lang.NoClassDefFoundError: org/eclipse/core/resources/undo/snapshot/ResourceSnapshotFactory at org.eclipse.jdt.internal.corext.refactoring.changes.UndoablePackageDeleteChange.perform(UndoablePackageDeleteChange.java:46) at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:281) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.access$0(DynamicValidationStateChange.java:1) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.lambda$0(DynamicValidationStateChange.java:105) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:41) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:742) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:5971) at org.eclipse.jdt.internal.corext.refactoring.changes.DynamicValidationStateChange.perform(DynamicValidationStateChange.java:106) at org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:281) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.lambda$0(PerformChangeOperation.java:258) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.executeChange(PerformChangeOperation.java:295) at org.eclipse.ltk.internal.ui.refactoring.UIPerformChangeOperation.executeChange(UIPerformChangeOperation.java:94) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:219) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2453) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2478) at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:89) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) Caused by: java.lang.ClassNotFoundException: org.eclipse.core.resources.undo.snapshot.ResourceSnapshotFactory cannot be found by org.eclipse.jdt.core.manipulation_1.20.0.v20231115-2128 ... 21 more

我的操作系统是最新的Arch Linux，eclipse平台是从AUR安装的。请针对这个问题给我一些建议。

谢谢和问候，
朝坂淳.

Answer 1

您遇到的错误似乎与缺少课程有关，特别是

org.eclipse.core.resources.undo.snapshot.ResourceSnapshotFactory

。该类是Eclipse平台资源插件的一部分，错误提示找不到它。

以下是解决此问题的一些建议：

1. 检查 Eclipse 版本兼容性： 确保您使用的 Eclipse 版本与您安装的 Eclipse 插件和功能部件的版本兼容。有时，如果不同组件之间不匹配，可能会出现错误。

2. 更新 Eclipse 和插件： 确保您拥有 Eclipse 及其插件的最新更新。您提到您从 AUR 安装了 Eclipse，因此您可能需要通过包管理器或直接从 Eclipse IDE 检查更新。

3. 清洁和重建： 在 Eclipse 中，尝试清理并重建您的工作区。转到“项目”菜单并选择“清理...”。然后，选择您的项目并单击“清理”。之后，再次尝试删除文件或包。

4. 检查 Eclipse 工作区元数据： 有时，问题可能是由损坏的工作区元数据引起的。您可以尝试创建一个新工作区并将项目导入到新工作区中，看看问题是否仍然存在。

5. 检查Eclipse错误日志： 在 Eclipse 中，转到“窗口”菜单，选择“显示视图”，然后选择“错误日志”。此视图提供有关 Eclipse 中发生的错误的更多详细信息。检查是否有与该问题相关的任何其他错误消息或警告。

6. 重新安装Eclipse： 如果上述解决方案均无效，请考虑重新安装 Eclipse。删除现有的 Eclipse 安装，然后重新安装，确保遵循适用于您的操作系统的安装说明。

7. 向 Eclipse 社区寻求帮助： 如果问题仍然存在，请考虑向 Eclipse 社区寻求帮助。您可以访问 Eclipse Forums 或在 Eclipse Bugzilla 上搜索类似问题。如果问题是错误，社区可能已经报告或提供了解决方案。

8. 查看 Arch Linux 论坛： 由于您使用的是 Arch Linux，您可能需要查看 Arch Linux 论坛，看看其他用户是否遇到过类似的问题，以及是否有任何具体的解决方案或解决方法。

请记住在对 Eclipse 安装或工作区进行重大更改之前备份您的项目。