java运行时获取java类所在目录的properties文件

public final class Config
{

    private static String fileSeparator = System.getProperty("file.separator");
    static
	{
		try
		{
			InputStream in = null;
			String currentJarPath = URLDecoder.decode(Config.class.getProtectionDomain().getCodeSource().getLocation().getFile(), "UTF-8"); //获取当前Jar文件名
			String path = Config.class.getResource("").getPath();			
			if(path.indexOf("!")!=-1)
			{//在jar中
				JarFile currentJar = new JarFile(currentJarPath);
				JarEntry dbEntry = currentJar.getJarEntry("conf/server.properties");
				if(dbEntry != null)
					in = currentJar.getInputStream(dbEntry);
			}
			if(in == null)
			{
				//String loaderPath = Thread.currentThread().getContextClassLoader().getResource("").getPath();
				String loaderPath = currentJarPath;
				String packPath = Config.class.getPackage().toString();
				packPath = packPath.replace("package ", "");
				packPath = "/" + packPath.replace(".", "/");
				if(!loaderPath.endsWith("/"))
					loaderPath = loaderPath.substring(0, loaderPath.lastIndexOf("/")) + fileSeparator;
				loaderPath = loaderPath.replace(packPath, "");
				String tPath = loaderPath+"conf"+fileSeparator+"server.properties";
				logger.info("Config class load server.properties, the path =" + tPath);
				in =new FileInputStream(tPath);
			}
			Properties prop = new Properties();
			prop.load(in);
}