无法在 Eclipse 中创建 python 视图

Question

我已经将 PyDev 插件安装到 Eclipse 中。当我创建新的 python 项目时，我必须切换到 Python 视图。不幸的是我收到这样的消息：

Could not create the view: An unexpected exception was thrown.
java.lang.RuntimeException: Can't find id: org.eclipse.jst.servlet.ui.EnhancedJavaRendering
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.findId(NavigatorContentDescriptorManager.java:459)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.computeSequenceNumbers(NavigatorContentDescriptorManager.java:476)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.access$0(NavigatorContentDescriptorManager.java:462)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager$NavigatorContentDescriptorRegistry.readRegistry(NavigatorContentDescriptorManager.java:512)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.<init>(NavigatorContentDescriptorManager.java:130)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptorManager.<clinit>(NavigatorContentDescriptorManager.java:44)
    at org.eclipse.ui.internal.navigator.NavigatorContentService.<clinit>(NavigatorContentService.java:93)
    at org.eclipse.ui.navigator.CommonViewer.<init>(CommonViewer.java:96)
    at org.python.pydev.navigator.ui.PydevPackageExplorer$PydevCommonViewer.<init>(PydevPackageExplorer.java:77)
    at org.python.pydev.navigator.ui.PydevPackageExplorer.createCommonViewer(PydevPackageExplorer.java:174)
    at org.eclipse.ui.navigator.CommonNavigator.createPartControl(CommonNavigator.java:193)
    at org.python.pydev.navigator.ui.PydevPackageExplorer.createPartControl(PydevPackageExplorer.java:188)
    at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
    at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:313)
    at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:534)
    at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180)
    at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270)
    at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
    at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473)
    at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245)
    at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1198)
    at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1597)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:643)
    at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:570)
    at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568)
    at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:272)
    at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:981)
    at org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:3713)
    at org.eclipse.ui.internal.WorkbenchPage.busyResetPerspective(WorkbenchPage.java:1046)
    at org.eclipse.ui.internal.WorkbenchPage.access$13(WorkbenchPage.java:950)
    at org.eclipse.ui.internal.WorkbenchPage$14.run(WorkbenchPage.java:3175)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.resetPerspective(WorkbenchPage.java:3173)
    at org.eclipse.ui.internal.handlers.ResetPerspectiveHandler.execute(ResetPerspectiveHandler.java:84)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
    at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
    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:4165)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    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:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    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:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

如何处理？

Answer 1

当我得到新版本的 Pydev 时，我遇到了同样的问题。我访问了 pydev.org 安装说明，发现现在需要 Java 7。当我升级 Java 并确保 Eclipse 使用新版本后，问题就自行解决了。

Answer 2

虽然您在启动 PyDev 包资源管理器时遇到问题，但真正的问题是另一个插件 - 它找不到 org.eclipse.jst.servlet.ui.EnhancedJavaRendering，所以，我猜这是安装网络工具。

Answer 3

我迟到了这个问题，但我确实找到了答案。尽管您可能拥有 Java 1.7 JRE，但您需要安装 1.7 JDK。确保 Eclipse 了解首选项中的更新 >安装的 JRE。如果您只看到 Java SE 6 并且您确实安装了 Java SE 7，请单击搜索。确保选中 7。您可以通过查看 About Eclipse > 来双重确保它使用的是 1.7。安装详细信息（按钮）>配置（选项卡），然后查找 -vm 之后的行。

我还必须摆弄 ~/workspace 下的 .metadata 文件夹和文件，才能使 Eclipse 中的 Pydev Package Explorer 窗格正确显示。