Java连接Redis模拟手机号短信验证

需求分析： 输入手机号，点击发送后返回6位数字码，2分钟有效。用户输入验证码，点击验证，返回成功或失败，每个手机号每天只能输入3次，0点刷新次数。

package com.wenbin.jedis;

import redis.clients.jedis.Jedis;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Random;
import java.util.Scanner;


public class PhoneCode {
    //随机数
    private static final Random random = new Random();

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("请输入您的手机号");
        String photo = input.next();
        String code = sendCode(photo);
        //次数用完 退出 不再执行验证操作
        if (code.length() == 0) {
            System.out.println("您今天的验证码发送次数已经用完");
            return;
        }
        System.out.println("您收到的验证码是" + code);
        System.out.println("请输入您的验证码");
        String inCode = input.next();
        boolean flag = checkCode(photo, inCode);
        System.out.println((flag) ? "验证码正确" : "验证码错误");
    }

    
    private static boolean checkCode(String photo, String inCode) {
        //获取redis链接
        Jedis jedis = getJedis();
        //该手机号验证码key
        String codeKey = photo + "code";
        //拿出redis中存入的验证码
        String codevalue = jedis.get(codeKey);
        //关闭redis连接
        closeJedis(jedis);
        //返回两个是否相等
        return inCode.equals(codevalue);
    }

    
    private static String sendCode(String photo) {
        //获取redis链接
        Jedis jedis = getJedis();
        //该手机号已发送次数key
        String countKey = photo + "count";
        //该手机号已发送次数value,如果没有返回null把他改为0 有则返回已发送次数
        String countValue = (jedis.get(countKey) == null) ? "0" : jedis.get(countKey);
        if (Integer.parseInt(countValue) >= 3) {
            return "";
        }
        //下面代码表示正常发送验证码
        //计算当前时间还有多少秒到24点 用作每天验证次数刷新 存储redis中设置key有效时间
        Calendar nowDate = Calendar.getInstance();
        Calendar nextDayDate = new GregorianCalendar(nowDate.get(Calendar.YEAR), nowDate.get(Calendar.MONTH), nowDate.get(Calendar.DATE) + 1);
        long s = (nextDayDate.getTimeInMillis() - nowDate.getTimeInMillis()) / 1000;
        //在redis中设置到24.过期的key 值为每日验证码发送次数
        jedis.setex(countKey, (int) s, String.valueOf(Integer.parseInt(countValue) + 1));
        //该手机号验证码key
        String codeKey = photo + "code";
        //该手机号验证码value，六位数随机生成
        String codevalue = getCode();
        //在redis中设置120s过期的key 值为验证码
        jedis.setex(codeKey, 2 * 60, codevalue);
        //关闭redis连接
        closeJedis(jedis);
        return codevalue;
    }

    
    private static String getCode() {
        //生成1000000-99999左闭右闭的随机数
        int code = random.nextInt(1000000) % (1000000 - 99999 + 1) + 99999;
        return String.valueOf(code);
    }


    
    public static Jedis getJedis() {
        return new Jedis("192.168.188.100", 6379);
    }

    
    public static void closeJedis(Jedis jedis) {
        jedis.close();
    }

}