@Test
public void testMD5Util() {

    byte[] input = {49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 49};
    String output = MD5Util.makeMD5(input);
    String expect = "499351bfa5f412772850df0c87a965f5";
    assertEquals(expect, output);
}