我想在我的备忘单中添加一个自定义命令，我已经让它运行良好，除非使用Plug-in Manifest Editor打开plugin.xml，否则会出错。
以下是我用来实现该功能的步骤：
1：在plugin.xml中定义自定义命令。
<extension
point="org.eclipse.ui.commands">
<category
id="com.ting.commands.category"
name="Custom Category">
</category>
<command
categoryId="com.ting.commands.category"
defaultHandler="com.ting.commands.ExampleCommandHandler"
description="Example Command"
id="com.ting.commands.exampleCommand"
name="Custom commands">
</command>
2：向作弊表项添加命令。
<item
title="Example cheat sheet item">
<description>
Example item description
</description>
<command
required="false"
serialization="com.ting.commands.exampleCommand"/>
</item>
错误讯息：
Message : Failed to deserialize command: com.ting.commands.ExampleCommandHandler
异常堆栈跟踪：
org.eclipse.core.commands.common.NotDefinedException: Cannot get the parameters from an undefined command. com.ting.commands.ExampleCommandHandler
at org.eclipse.core.commands.Command.getParameters(Command.java:759)
at org.eclipse.core.commands.CommandManager.deserialize(CommandManager.java:464)
at org.eclipse.ui.internal.commands.CommandService.deserialize(CommandService.java:112)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.getParameterizedCommand(SimpleCSCommandDetails.java:447)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.getParameterizedCommand(SimpleCSCommandDetails.java:469)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSCommandDetails.updateFields(SimpleCSCommandDetails.java:286)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSItemDetails.updateFields(SimpleCSItemDetails.java:277)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.details.SimpleCSItemDetails.selectionChanged(SimpleCSItemDetails.java:368)
at org.eclipse.ui.forms.DetailsPart$1.run(DetailsPart.java:274)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.forms.DetailsPart.showPage(DetailsPart.java:261)
at org.eclipse.ui.forms.DetailsPart.update(DetailsPart.java:234)
at org.eclipse.ui.forms.DetailsPart.selectionChanged(DetailsPart.java:219)
at org.eclipse.ui.forms.ManagedForm.fireSelectionChanged(ManagedForm.java:148)
at org.eclipse.pde.internal.ui.editor.TreeSection$PartAdapter.selectionChanged(TreeSection.java:32)
at org.eclipse.pde.internal.ui.parts.TreePart$1.selectionChanged(TreePart.java:45)
at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.runtime.Platform.run(Platform.java:888)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)
at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2132)
at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1669)
at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1124)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.SimpleCSMasterTreeSection.setFormInput(SimpleCSMasterTreeSection.java:1233)
at org.eclipse.pde.internal.ua.ui.editor.cheatsheet.simple.SimpleCSDefinitionPage.setActive(SimpleCSDefinitionPage.java:207)
at org.eclipse.ui.forms.editor.FormEditor.pageChange(FormEditor.java:480)
at org.eclipse.pde.internal.ui.editor.PDEFormEditor.pageChange(PDEFormEditor.java:262)
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:291)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1185)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1025)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3256)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2045)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:323)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3493)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3112)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
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:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:592)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
答案 0 :(得分：0)
我假设（Cheat Sheet？）编辑器找不到该命令，因为定义插件不是目标平台的一部分。如果您导出插件并添加到开发平台，它应该可以正常工作。