public class PhoneCode {
    public static void main(String[] args) {
        //模拟验证码发送
        verifyCode("12345678910");
    }
    //1.生成6位数字验证码
    public static String getCode() {
        Random random = new Random();
        String code = "";
        for (int i = 0; i < 6; i++) {
            int rand = random.nextInt(10);
            code += rand;
        }
        return code;
    }

    //2. 每个手机每天只能发送三次，验证放在redis中，设置过期时间
    public static void verifyCode(String phone) {
        //连接redis
        Jedis jedis = new Jedis("47.107.53.146", 6379);

        //拼接key
        //手机发送次数
        String countKey = "VerifyCode" + phone + ":count";
        //验证码key
        String codeKey = "VerifyCode" + phone + ":code";
        //每个手机只能发送三次
        String count = jedis.get(countKey);
        if (count == null){
            //没有发送次数，说明是第一次发送
            //设置发送次数是1
            jedis.setex(countKey, 24*60*60, "1");
        }else if (Integer.parseInt(count) <= 2) {
            //发送次数 +1
            jedis.incr(countKey);
        }else if (Integer.parseInt(count) > 2) {
            //发送三次，不能再发送了
            System.out.println("今天的发送次数已经超过三次");
            jedis.close();
            return;
        }

        //发送验证码放到 redis 中
        String vscode = getCode();
        jedis.setex(codeKey, 120, vscode);
        jedis.close();
    }
    //3.验证码校验
    public static void getRedisCode(String phone,String code) {
        //从redis获取验证码
        Jedis jedis = new Jedis("47.107.53.146",6379);
        //验证码key
        String codeKey = "VerifyCode"+phone+":code";
        String redisCode = jedis.get(codeKey);
        //判断
        if(redisCode.equals(code)) {
            System.out.println("成功");
        }else {
            System.out.println("失败");
        }
        jedis.close();
    }
}