Java 带有IWorkbenchPage.hideActionSet（"；org.eclipse.ui.WorkingSetActionSet"；的ClassCastException

与

RCP

胖客户端捆绑的eclipse最近已从

Eclise4.2.2

升级到

EclipseNeon4.6.3

在这次升级中，切换透视图给出了

ClassCastException

，在

page.hideActionSet（“org.eclipse.ui.WorkingSetActionSet”）

行有以下代码：

我得到的例外是：

    !ENTRY org.eclipse.ui.workbench 4 2 2021-04-19 17:54:30.409
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.ClassCastException: org.eclipse.e4.ui.model.application.ui.menu.impl.DirectToolItemImpl incompatible with org.eclipse.e4.ui.model.application.ui.menu.MToolBar
    at org.eclipse.ui.internal.CoolBarToTrimManager.add(CoolBarToTrimManager.java:147)
    at org.eclipse.ui.internal.CoolBarToTrimManager.insertAfter(CoolBarToTrimManager.java:418)
    at org.eclipse.ui.internal.ActionSetActionBars.getToolBarManager(ActionSetActionBars.java:259)
    at org.eclipse.ui.internal.PluginActionSetBuilder$ActionSetContribution.contributeAdjunctCoolbarAction(PluginActionSetBuilder.java:402)
    at org.eclipse.ui.internal.PluginActionSetBuilder.processAdjunctContributions(PluginActionSetBuilder.java:243)
    at org.eclipse.ui.internal.PluginActionSetBuilder.processActionSets(PluginActionSetBuilder.java:227)
    at org.eclipse.ui.internal.ActionPresentation.setActionSets(ActionPresentation.java:184)
    at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWindow.java:2409)
    at org.eclipse.ui.internal.WorkbenchPage.hideActionSet(WorkbenchPage.java:2603)
    at org.eclipse.epf.rcp.ui.MainWorkbenchWindowAdvisor$1.perspectiveActivated(MainWorkbenchWindowAdvisor.java:75)
    at org.eclipse.ui.internal.PerspectiveListenerList$1.run(PerspectiveListenerList.java:75)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.PerspectiveListenerList.fireEvent(PerspectiveListenerList.java:58)
    at org.eclipse.ui.internal.PerspectiveListenerList.firePerspectiveActivated(PerspectiveListenerList.java:72)
    at org.eclipse.ui.internal.WorkbenchWindow.firePerspectiveActivated(WorkbenchWindow.java:1717)
    at org.eclipse.ui.internal.WorkbenchPage$4.handleEvent(WorkbenchPage.java:3009)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4821)

---

从上面的堆栈跟踪来看，来自插件“org.eclipse.ui.workbench”的代码似乎有问题，它看起来失控了。有什么办法解决这个问题吗？

EclipseNeon 4.6.3有13个版本，比以前晚了几年。不要浪费时间进行反向计算。如果你能在当前的Eclipse2021-03上重现这一点，你可以将其报告为一个错误

    !ENTRY org.eclipse.ui.workbench 4 2 2021-04-19 17:54:30.409
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.ClassCastException: org.eclipse.e4.ui.model.application.ui.menu.impl.DirectToolItemImpl incompatible with org.eclipse.e4.ui.model.application.ui.menu.MToolBar
    at org.eclipse.ui.internal.CoolBarToTrimManager.add(CoolBarToTrimManager.java:147)
    at org.eclipse.ui.internal.CoolBarToTrimManager.insertAfter(CoolBarToTrimManager.java:418)
    at org.eclipse.ui.internal.ActionSetActionBars.getToolBarManager(ActionSetActionBars.java:259)
    at org.eclipse.ui.internal.PluginActionSetBuilder$ActionSetContribution.contributeAdjunctCoolbarAction(PluginActionSetBuilder.java:402)
    at org.eclipse.ui.internal.PluginActionSetBuilder.processAdjunctContributions(PluginActionSetBuilder.java:243)
    at org.eclipse.ui.internal.PluginActionSetBuilder.processActionSets(PluginActionSetBuilder.java:227)
    at org.eclipse.ui.internal.ActionPresentation.setActionSets(ActionPresentation.java:184)
    at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWindow.java:2409)
    at org.eclipse.ui.internal.WorkbenchPage.hideActionSet(WorkbenchPage.java:2603)
    at org.eclipse.epf.rcp.ui.MainWorkbenchWindowAdvisor$1.perspectiveActivated(MainWorkbenchWindowAdvisor.java:75)
    at org.eclipse.ui.internal.PerspectiveListenerList$1.run(PerspectiveListenerList.java:75)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.PerspectiveListenerList.fireEvent(PerspectiveListenerList.java:58)
    at org.eclipse.ui.internal.PerspectiveListenerList.firePerspectiveActivated(PerspectiveListenerList.java:72)
    at org.eclipse.ui.internal.WorkbenchWindow.firePerspectiveActivated(WorkbenchWindow.java:1717)
    at org.eclipse.ui.internal.WorkbenchPage$4.handleEvent(WorkbenchPage.java:3009)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4821)