SpringBoot详解如何整合Redis缓存验证码

<!--Spring Data Redis-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

/**
 * @classname RedisConfig
 * @description Redis配置类，更换key的默认序列化器
 * @author xBaozi
 * @date 19:04 2022/7/2
 **/
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setConnectionFactory(connectionFactory);
        return redisTemplate;
    }
}

@PostMapping("/sendMsg")
public Result<String> sendMsg(@RequestBody User user, HttpSession session) {
    // 获取需要发送短信的手机号
    String userPhone = user.getPhone();
    if (StringUtils.isNotEmpty(userPhone)) {
        // 随机生成4位验证码
        String checkCode = ValidateCodeUtils.generateValidateCode4String(4);
        // 将生成的验证码保存到Redis中并设置有效期五分钟
        redisTemplate.opsForValue().set(userPhone, checkCode, 5, TimeUnit.MINUTES);
        return Result.success(checkCode);
    }
    return Result.error("短信发送错误");
}

@PostMapping("/login")
public Result<User> login(@RequestBody Map map, HttpSession session) {
    log.info("map: {}", map);
    // 获取用户输入信息
    String phone = (String)map.get("phone");
    String code = (String)map.get("code");
    // 从Redis中取出验证码
    String checkCode = redisTemplate.opsForValue().get(phone);
    // 比对验证码是否一致
    if (StringUtils.isNotEmpty(checkCode) && checkCode.equals(code.toLowerCase())) {
        // 将用户id存放到session中
        session.setAttribute("user", user.getId());
        // 登录成功，删除Redis中的验证码
        redisTemplate.delete(phone);
        // 将用户信息返回到前端
        return Result.success(user);
    }
    return Result.error("登录失败，请检查手机号或验证码是否正确");
}