Java 生成6位纯数字验证码 发短信验证码处使用

    @Test
    public void randomCodeTest() {
        Random random = new Random();
        for (int i = 0; i < 10000; i++) {
            int randomNum = random.nextInt(1000000);
            String randomCode = String.format("%06d", randomNum);
            System.out.println(randomCode);

        }


    }