得到eclipse rcp plugin 内目录文件绝对路径的方法

import  java.io.IOException;
import  java.net.URL;

import  org.eclipse.core.runtime.FileLocator;
import  org.eclipse.core.runtime.Platform;
import  org.osgi.framework.Bundle;

import  com.work.base.exception.DataException;
import  com.work.view.Activator;

public   class  BundlePathUtil {

     public   static  String getRealPath(String bundleID, String entry)
             throws  DataException {
        URL urlentry;
        String strEntry;
         try  {
            Bundle bundle  =  Platform.getBundle(bundleID);
             if  (bundle == null )
                 throw   new  DataException( " 请检查文件的路径 " , new  NullPointerException());
             //  get path URL
            urlentry  =  bundle.getEntry(entry);
             if  (urlentry == null )
                 throw   new  DataException( " 请检查文件的路径 " , new  NullPointerException());
            strEntry  =  FileLocator.toFileURL(urlentry).getPath();
        }  catch  (IOException e1) {
             throw   new  DataException( " 请检查文件的路径 " , e1);
        }
         return  strEntry;
    }
    
     public   static  String getPluginPath(){        
         return  Activator.getDefault().getStateLocation().makeAbsolute().toFile().getAbsolutePath();
        
    }   
    
}

另外，获取插件/rcp 的workspace的路径：

Platform.getInstanceLocation().getURL().getPath()