Java eclipse中的NullPointerException在PartServiceImpl.internalFixContext的eclipse本身中

我有一个关于EclipseIDE的问题，我无法在我的工作空间中打开任何文件；如果我试图打开该文件，eclipse将警告以下错误对话框

"An error has occurred. See error log for more details. java.lang.NullPointerException"

我在工作区的.meta中查看.log文件，我在文件中看到如下段落：

!ENTRY org.eclipse.jface 4 2 2557-04-09 11:40:49.422
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.internalFixContext(PartServiceImpl.java:380)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:341)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1029)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3047)
    at org.eclipse.ui.internal.WorkbenchPage.access$22(WorkbenchPage.java:2969)
    at org.eclipse.ui.internal.WorkbenchPage$8.run(WorkbenchPage.java:2951)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2947)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2911)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2902)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:655)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:614)
    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:249)
    at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:228)
    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:48)
    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:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1053)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:942)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    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:353)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
    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:629)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

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我如何解决这个问题？有什么想法吗？

Eclipse有一个bug：

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您可以尝试重新启动

Eclipse

，这有助于解决问题的原始海报。

最好通过单击帮助>>上的Eclipse来更新Eclipse检查更新，也可以通过在命令提示符Eclipse-clean中输入命令来启动Eclipse。

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希望这能对你有所帮助。

嗨，这可能是项目的问题

选择项目并设置eclipse：

project -> clean... 

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我也遇到了这个错误。我刚刚在eclipse中打开了新窗口ie window->new window。然后，我关闭了我的旧窗口。这解决了我的问题。

退出eclipse后，我将.eclipse（位于用户的主目录中）移动到了.eclipse.old（以防万一我可能不得不撤消）。重新启动eclipse后，错误不再显示，我的项目工作正常

注意：我有一个简单的设置，这对于具有高级设置的环境可能不是最好的

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我将此作为一个单独的答案发布，因为前面列出的方法对我不起作用。

我遇到了相同的错误，但只针对从git克隆的文件，这些文件被分配给了专有插件。

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我意识到，即使从git克隆了文件，我也需要在eclipse中创建一个新项目或导入一个项目，这就解决了错误。

我认为这可能会起作用。试试这个，转到其中的C:\Users\YourcomputerName。android文件夹将在那里你删除该文件夹并重新启动eclipse。是的！！！我将尝试重新启动eclipse。重新启动后，所有工作都已正常。谢谢。从菜单文件->重新启动简单地重新启动解决了我的问题。Tks！