【发布时间】：2015-04-29 16:30:38
【问题描述】：
我知道这里有很多这样的问题，而且大部分都得到了解答。但是答案并不能解决我的问题。
我正在开发一个 Eclipse 插件项目，有一个可以运行或调试的自定义项目类型。我已经实现了运行和调试功能，我期望的一切都显示在屏幕上，除了控制台显示异常：
!ENTRY org.eclipse.e4.ui.workbench 4 0 2015-04-28 23:31:17.410
!MESSAGE Internal error during tool item enablement updating, this is only logged once per tool item.
!STACK 0
org.eclipse.swt.SWTException: Invalid thread access
at org.eclipse.swt.SWT.error(SWT.java:4441)
at org.eclipse.swt.SWT.error(SWT.java:4356)
at org.eclipse.swt.SWT.error(SWT.java:4327)
at org.eclipse.swt.widgets.Widget.error(Widget.java:783)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:574)
at org.eclipse.swt.widgets.Widget.getData(Widget.java:874)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.updateIcons(HandledContributionItem.java:546)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.update(HandledContributionItem.java:440)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.update(HandledContributionItem.java:430)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$3.run(HandledContributionItem.java:168)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.updateItemEnablement(HandledContributionItem.java:196)
at org.eclipse.e4.ui.workbench.renderers.swt.ToolItemUpdater.updateContributionItems(ToolItemUpdater.java:39)
at org.eclipse.e4.ui.workbench.renderers.swt.ToolBarManagerRenderer$8.changed(ToolBarManagerRenderer.java:367)
at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:110)
at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:338)
at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:352)
at org.eclipse.ui.internal.services.EvaluationService.contextEvaluate(EvaluationService.java:139)
at org.eclipse.ui.internal.services.EvaluationService.addSourceProvider(EvaluationService.java:180)
at org.eclipse.debug.internal.ui.contexts.DebugContextSourceProvider.<init>(DebugContextSourceProvider.java:51)
at org.eclipse.debug.internal.ui.contexts.DebugWindowContextService.<init>(DebugWindowContextService.java:62)
at org.eclipse.debug.internal.ui.contexts.DebugContextManager.createService(DebugContextManager.java:163)
at org.eclipse.debug.internal.ui.contexts.DebugContextManager.getContextService(DebugContextManager.java:221)
at org.eclipse.debug.internal.ui.views.ViewContextService.<init>(ViewContextService.java:620)
at org.eclipse.debug.internal.ui.views.ViewContextManager.windowOpened(ViewContextManager.java:93)
at org.eclipse.debug.internal.ui.views.ViewContextManager.<init>(ViewContextManager.java:55)
at org.eclipse.debug.internal.ui.views.ViewContextManager.getDefault(ViewContextManager.java:44)
at org.eclipse.debug.internal.ui.contexts.DebugContextManager.getDefault(DebugContextManager.java:150)
at org.eclipse.debug.ui.DebugUITools.getDebugContextManager(DebugUITools.java:1068)
at org.eclipse.debug.internal.ui.sourcelookup.SourceLookupService.<init>(SourceLookupService.java:40)
at org.eclipse.debug.internal.ui.sourcelookup.SourceLookupManager.windowOpened(SourceLookupManager.java:91)
at org.eclipse.debug.internal.ui.sourcelookup.SourceLookupManager.<init>(SourceLookupManager.java:41)
at org.eclipse.debug.internal.ui.sourcelookup.SourceLookupManager.getDefault(SourceLookupManager.java:53)
at org.eclipse.debug.internal.ui.DebugUIPlugin.initializeLaunchListeners(DebugUIPlugin.java:935)
at org.eclipse.debug.internal.ui.DebugUIPlugin.launchAdded(DebugUIPlugin.java:920)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.run(LaunchManager.java:451)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.debug.internal.core.LaunchManager$LaunchNotifier.notify(LaunchManager.java:438)
at org.eclipse.debug.internal.core.LaunchManager.fireUpdate(LaunchManager.java:1044)
at org.eclipse.debug.internal.core.LaunchManager.addLaunch(LaunchManager.java:708)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:834)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:739)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1039)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1256)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
我的代码如下：在 LaunchShortCut.java 我有
Display.getDefault().syncExec(new Runnable() {
@Override
public void run() {
Shell activeShell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
if(DebugUITools.openLaunchConfigurationDialog(activeShell, config, group, null) == Window.CANCEL){
return;
}
}
});
这会触发 LaunchConfigurationWindow，并且不会在控制台中显示任何异常。当我在此窗口中点击“运行”时，进程将在以下代码的第一行停止，其中我有一个断点，并在控制台中显示异常。
Display.getDefault().syncExec(new Runnable() {
@Override
public void run() {
//clear old output
HTMLOutput htmloutput = (HTMLOutput) PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findView("my.view.id");
}
}
从异常的堆栈跟踪中，我看不到任何与我的代码相关的内容。如果我让程序继续运行，一切都很好，我看不出这个异常会导致任何问题，但我就是不知道它是怎么回事，甚至无法阻止它出现。请帮我解决这个问题。
【问题讨论】：
-
这是哪个版本的 Eclipse？
标签： eclipse multithreading eclipse-plugin swt