获取插件工程地址的方法

/*
	 * 函数名：getPluginPath
	 * 功能：获取指定包名的路径
	 */
	public static String getPluginPath(String packageName){
		String path;
		try {
			path = FileLocator.toFileURL(
					Platform.getBundle(packageName)
							.getEntry("")).getPath();
			path = path.substring(path.indexOf("/") + 1, path.length());
		} catch (IOException e) {
			path = "";
			e.printStackTrace();
		}
		return path;
	}