部署程序集:当前显示的页面包含无效值

Question

我从Sourceforge导入了一个Java Web应用程序,我做了三个工作周的努力来摆脱项目名称和包附加的所有红色十字架,但现在我无法在Eclipse和tomcat6开发环境中运行应用程序.在项目属性中,当我尝试设置部署程序集时,对话框显示:当前显示的页面包含无效值.在错误日志中,我发现当我单击部署程序集时,显示以下错误消息:

错误

Wed Jan 09 10:25:16 CST 2013
Problems occurred when invoking code from plug-in: "org.eclipse.jface".

java.lang.NullPointerException
    at org.eclipse.wst.common.componentcore.internal.resources.VirtualFolder.getFirstTaggedResource(VirtualFolder.java:185)
    at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getDefaultDeploymentDescriptorFolder(J2EEModuleVirtualComponent.java:542)
    at org.eclipse.jst.j2ee.internal.ui.JavaEEDeploymentAssemblyAdvancedSectionBuilder.(JavaEEDeploymentAssemblyAdvancedSectionBuilder.java:86)
    at org.eclipse.jst.j2ee.internal.ui.J2EEModuleDependenciesPropertyPage.getAdvancedSectionBuilder(J2EEModuleDependenciesPropertyPage.java:381)
    at org.eclipse.jst.j2ee.internal.ui.J2EEModuleDependenciesPropertyPage.(J2EEModuleDependenciesPropertyPage.java:65)
    at org.eclipse.jst.servlet.ui.internal.WebDependencyPropertyPage.(WebDependencyPropertyPage.java:34)
    at org.eclipse.jst.servlet.ui.internal.WebModuleDependencyPageProvider.createPages(WebModuleDependencyPageProvider.java:54)
    at org.eclipse.wst.common.componentcore.ui.propertypage.ModuleAssemblyRootPage.createContents(ModuleAssemblyRootPage.java:195)
    at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:232)
    at org.eclipse.wst.common.componentcore.ui.propertypage.ModuleAssemblyRootPage.createControl(ModuleAssemblyRootPage.java:346)
    at org.eclipse.jface.preference.PreferenceDialog.createPageControl(PreferenceDialog.java:1502)
    at org.eclipse.jface.preference.PreferenceDialog$14.run(PreferenceDialog.java:1259)
    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.preference.PreferenceDialog.showPage(PreferenceDialog.java:1253)
    at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredPreferenceDialog.java:675)
    at org.eclipse.jface.preference.PreferenceDialog$10.run(PreferenceDialog.java:709)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(PreferenceDialog.java:705)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:888)
    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.firePostSelectionChanged(StructuredViewer.java:886)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1226)
    at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1251)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:262)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:256)
    at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:433)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
    at org.eclipse.jface.window.Window.open(Window.java:801)
    at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:158)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
    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:4169)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1022)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:916)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:585)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:540)
    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)

我google了很多次,但我找不到解决方案.任何人都可以帮忙让部署程序集工作吗？我认为这是我的应用程序无法运行的关键.提前致谢.

Answer 1

eclipse -clean没有为我修复它.我的解决方法:在eclipse中删除项目(不要在磁盘上删除).然后在文件系统中删除.project .classpath和.settings/*然后在eclipse中,在相同的工作空间中,创建与旧的同名的新webproject.它创建了该项目并找到了我的所有资源.现在部署组件再次运行!之后,我更新了构建路径以获得正确的项目和lib依赖项.

Answer 2

请看这个:https://stackoverflow.com/a/3492924.
如果clean没有帮助,那么项目的具体设置可能出现问题.我建议你检查.settings/目录中的每个文件.

我知道这不是一个随时可用的解决方案,但可能至少是一个起点.祝好运.