public static String md5Hex(final String data) {
        return org.apache.commons.codec.digest.DigestUtils.md5Hex(data);
    }
@Test
    public void testMd5Hex() {
        final String md5 = "e10adc3949ba59abbe56e057f20f883e";
        assertEquals(md5, DigestUtils.md5Hex("123456"));
    }