在Eclipse3.4.1下运行Eclispe Article：Simplifying Preference Pages with Field Editors的示例程序

进行插件开发学习时，将Eclipse Articles下的一些插件开发例子直接导入到Eclipse3.4.1环境下无法直接运行，以Eclipse Article：Simplifying Preference Pages with Field Editors（http://www.eclipse.org/articles/Article-Field-Editors/field_editors.html）为例，说明如下

 

在Eclipse3.4.1环境下新建插件开发工程，拷贝例子程序到src目录下，并修改MAINFEST.MF文件中的Bundle-Activator属性值，运行插件报如下错误：

 

org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException:
An error occurred while automatically activating bundle xxx(line no.).

 

 

解决方法

 

1.修改构造函数

 

public HTMLEditorPlugin(IPluginDescriptor descriptor) {
	super(descriptor);
	plugin = this;
}

 

修改为

 

public HTMLEditorPlugin() {
}

 

2.添加start(BundleContext context)和stop(BundleContext context)方法

 

private BundleContext context = null;
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception {
	super.start(context);
	plugin = this;
}
/*
* (non-Javadoc)
* @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext context) throws Exception {
	plugin = null;
	super.stop(context);
}