[Redis] Redis case-simulating verification code sending

Require:

1. Enter your mobile phone number, click Send and a 6-digit code will be randomly generated, valid for 2 minutes.

2. Enter the verification code, click Verify, and return success or failure.

3. Each mobile phone number can only be entered 3 times a day.

method:

 Code:

package com.redis_study;

import redis.clients.jedis.Jedis;

import java.util.Random;

public class PhoneCode {

    public static void main(String[] args) {
        //模拟验证码的发送
        verifyCode("17853552222");

        //模拟校验
        //getRedisCode("17853552222","193237");


    }

    //1.生成6位的数字验证码
    public static String getCode(){
        Random random=new Random();
        String code="";
        for (int i=0;i<6;i++){
            int rand=random.nextInt(10);//生成10以内的数
            code+=rand;
        }
        return code;
    }
    //2.让每个手机只能每天发送三次，验证码放到redis中，设置过期时间
    public static void verifyCode(String phone){
        //连接数据库
        Jedis jedis=new Jedis("127.0.0.1",6379);
        //拼接key
        //手机发送次数key
        String countKey="VerifyCode"+phone+":count";
        //验证码key
        String codeKey="VerifyCode"+phone+":code";
        //让每个手机只能每天发送三次
        String count = jedis.get(countKey);
        if (count==null){
            //没有发送次数，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){
            //发送次数加1
            jedis.incr(countKey);
        }else if(Integer.parseInt(count)>2){
            //发送三次，不能再发送了
            System.out.println("今天发送次数已经超过三次");
            jedis.close();
            return; //到了三次后执行return，下面发送验证码的代码就不执行了
        }

        //发送的验证码放到Redis里面去,并设置过期时间是两分钟
        String code1 = getCode();
        jedis.setex(codeKey,120,code1);
        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("127.0.0.1",6379);
         //验证码key
         String codeKey="VerifyCode"+phone+":code";
         String redisCode = jedis.get(codeKey);
         if (redisCode.equals(code)){
             System.out.println("成功");
         }else {
             System.out.println("失败");
         }
         jedis.close();
     }
}