public static boolean containsPort(String address) {
        return splitIPPortStr(address).length == SPLIT_IP_PORT_RESULT_LENGTH;
    }
@Test
    void testContainsPort() {
        assertTrue(InternetAddressUtil.containsPort("127.0.0.1:80"));
        assertFalse(InternetAddressUtil.containsPort("127.0.0.1:80:80"));
    }