Exception 选择“文件”时不显示文件对话框；添加外部罐子……”；w/日志异常

我的新MacBook Air Yosemite上安装了

EclipseJuno

。我已经导入了一个在旧Mac上工作的项目，我需要添加一个对新Jar的引用。问题是，当我点击添加外部罐子时，什么也没有发生

Eclipse是最新的。看起来它只是坏了，可能与约塞米蒂有关——我创建了一个新项目，也不能在该项目中添加任何外部jar

将jar直接放入项目的lib文件夹是一种解决方法。但是，这会创建重复的文件系统对象

请告知

这是Eclipse错误日志中的条目：

!ENTRY org.eclipse.ui 4 0 2015-02-11 11:41:21.303
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
    at org.eclipse.swt.widgets.FileDialog.panel_shouldShowFilename(FileDialog.java:348)
    at org.eclipse.swt.widgets.Display.dialogProc(Display.java:5410)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSSavePanel.setAccessoryView(NSSavePanel.java:46)
    at org.eclipse.swt.widgets.FileDialog.open(FileDialog.java:254)
    at org.eclipse.jdt.ui.wizards.BuildPathDialogAccess.chooseExternalJAREntries(BuildPathDialogAccess.java:472)
    at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.openExtJarFileDialog(LibrariesWorkbookPage.java:794)
    at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.libaryPageCustomButtonPressed(LibrariesWorkbookPage.java:257)
    at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.access$0(LibrariesWorkbookPage.java:250)
    at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage$LibrariesAdapter.customButtonPressed(LibrariesWorkbookPage.java:199)
    at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.buttonPressed(TreeListDialogField.java:171)
    at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.doButtonSelected(TreeListDialogField.java:400)
    at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.access$2(TreeListDialogField.java:396)
    at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField$2.widgetSelected(TreeListDialogField.java:361)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4188)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4031)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:832)
    at org.eclipse.jface.window.Window.open(Window.java:808)
    at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:160)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:519)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4188)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4031)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1465)

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我也有同样的问题。看起来像个奇怪的虫子。重新启动Eclipse对我来说很有效。

更新Eclipse解决了这个问题。

我在约塞米蒂岛遇到了与Juno相同的问题。见下文

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，这可能是问题的原因。您可能必须切换到最新的Eclipse，或者至少切换到包含修复程序的版本。

该版本也可以在每次会话中为我修复一次问题。再次访问它，问题再次出现——迫使Eclipse重新启动以重新获得该功能。有点不方便。Eclipse是最新的。奇怪的是，我遇到了相同的问题，因此获得了赏金，但在我更新时它停止了。我认为这是另一个问题，堆栈跟踪异常从不同的行开始（348和360）。这并不意味着它们是相关的，但我认为它们并不完全相同。