public static String decodeUrl(String oldUrl, String characterSet) {
		String newUrl = "";
		try {
			newUrl = URLDecoder.decode(oldUrl, characterSet);
			return newUrl;
		} catch (Exception e) {//׽͵Ĵ
			// TODO Auto-generated catch block
			ClsFile.writeLog("޷'" + oldUrl + "'б. ԭurl"
					+ e.getLocalizedMessage());
			newUrl = oldUrl;
			return newUrl;
		} 
	}