汉字转GBk

 //汉字转GBK
    public static String toGBK(String source) throws UnsupportedEncodingException {
        StringBuilder sb = new StringBuilder();
        byte[] bytes = source.getBytes("GBK");
        for(byte b : bytes) {
            sb.append("%" + Integer.toHexString((b & 0xff)).toUpperCase());
        }
        return sb.toString();
    }