一直解决不了的问题,做插件的时候，无法打开编辑器,急

[tercel001]

根据陈刚的<Eclipse从入门到精通>
做的，可是怎么也打不开视图,请高手指点
我用的是ECLIPSE 3.2
btnTest = new Button(top, SWT.NONE);
btnTest.setBounds(new Rectangle(103, 65, 83, 35));
btnTest.setText("测试");
btnTest.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter() {
public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
System.out.println("widgetSelected()"); // TODO Auto-generated Event stub widgetSelected()

//打开编辑器MapEditor
MapEditorInput mapEditorInput=new MapEditorInput();
IEditorInput editorInput=null;
String editorID=null;

editorInput=mapEditorInput;
editorID="test.editors.MapEditor";

if(editorInput==null || editorID==null)
return;

IWorkbenchPage workbenchPage=getViewSite().getPage();
IEditorPart editor=workbenchPage.findEditor(editorInput);

try{
workbenchPage.openEditor(editorInput, editorID);
}catch(PartInitException e2){
e2.printStackTrace();
}
}
});

点了按扭之后，一直没有反映,下面是提示信息,也跟踪了，可是一直找不到问题所在，急死了，请高手指点,谢谢了

widgetSelected()
org.eclipse.ui.PartInitException: 无法打开编辑器，编辑器标识未知：test.editors.MapEditor
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:674)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2586)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2521)
at org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPage.java:2513)
at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2498)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2493)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2470)
at geopharos.views.AirscapeView$1.widgetSelected(AirscapeView.java:47)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at geopharos.intro.Application.run(Application.java:18)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
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:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)

[tercel001]

问题已经解决，贴出应该注意的问题，希望可以对大家有帮助

a) 继承类EditorPart，新建一MapEditor类
b) 扩展接口IEditorInput，新建一MapEditorInput类
改写MapEditor的init方法

public void init(IEditorSite site, IEditorInput input)
throws PartInitException {
// TODO 自动生成方法存根
if(input instanceof MapEditorInput){
this.setSite(site);
this.setInput(input);
}
}
c) MapEditorInput类的getName和getToolTipText不可以返回 null。
d) 一定要设置Editor扩展的icon(icon="icons/sample.gif")属性，否则会出现以下错误。
org.eclipse.ui.PartInitException: 无法打开编辑器，编辑器标识未知：test.editors.MapEditor
e) 打开Editor代码
//打开编辑器MapEditor
MapEditorInput mapEditorInput=new MapEditorInput();
IEditorInput editorInput=null;
String editorID=null;

editorInput=mapEditorInput;
editorID="test.editors.MapEditor";

if(editorInput==null || editorID==null)
return;

IWorkbenchPage workbenchPage=getViewSite().getPage();

try{
workbenchPage.openEditor(editorInput, editorID);
}catch(PartInitException e2){
e2.printStackTrace();
}