使用Redis缓存实现短信登录逻辑，手机验证码缓存，用户信息缓存

引入依赖

        <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency>

加配置

spring:redis:host: 127.0.0.1  #redis地址port: 6379 #端口password: 123456 #密码，无密码可以注释调database: 10 #库lettuce:pool:max-active: 10 #最大连接数max-idle: 10 #最多空闲min-idle: 1 #至少空闲time-between-eviction-runs: 10s #连接空闲时间

定义登录校验拦截器

/*** 拦截器*/
public class LoginInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {#校验是否登录，UserHolder中使用ThreadLocal保存用户信息if(UserHolder.getUser() == null){ response.setStatus(401); //未登录响应401状态码return false;}return true; //放行}
}

定义刷新token拦截器（只用于刷新token时间）

/*** 刷新token 拦截器*/
public class RefreshTokenInterceptor implements HandlerInterceptor {private StringRedisTemplate stringRedisTemplate; //LoginInterceptor 是自己创建的不能autowirepublic RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {this.stringRedisTemplate = stringRedisTemplate;}@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {//获取携带的token名String token = request.getHeader("authorization");if(StrUtil.isBlank(token)){return true;}//从redis中获取该token值String key = RedisConstants.LOGIN_USER_KEY+token;Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(key);if(StrUtil.isBlank(token)){return true;}//将map转BeanUserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(), false);UserHolder.saveUser(userDTO);//刷新token有效期stringRedisTemplate.expire(key,LOGIN_USER_TTL, TimeUnit.MINUTES);return true;}@Overridepublic void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {UserHolder.removeUser();}
}

保存用户信息类：

public class UserHolder {private static final ThreadLocal<UserDTO> tl = new ThreadLocal<>();public static void saveUser(UserDTO user){tl.set(user);}public static UserDTO getUser(){return tl.get();}public static void removeUser(){tl.remove();}
}

新建配置类LoginConfig,添加自己定义的拦截器

@Configuration
public class MVCConfig implements WebMvcConfigurer {@Resourceprivate StringRedisTemplate stringRedisTemplate;@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(new LoginInterceptor()).excludePathPatterns( //添加排除路径"/user/code","/user/login",).order(1); //order值越小越先执行，值相等则先添加先执行registry.addInterceptor(new RefreshTokenInterceptor(stringRedisTemplate)).order(0);}}

 登录逻辑

校验手机号 --> 校验验证码 --> 检查用户是否存在 --> 生成token --> 将用户信息user转成Hash存储到redis中 --> 设置token有效期

其中token可用hutool的UUID生成： UUID.randomUUID().toString(true); //true是不要短横线 -

将用户实体转成Map集合，存放到redis中：

Map<String, Object> userMap = BeanUtil.beanToMap(userDTO,new HashMap<>(),CopyOptions.create().setIgnoreNullValue(true).setFieldValueEditor((fieldName,fieldValue)-> fieldValue.toString())); //所有字段值转为String//存redisString tokenKey = LOGIN_USER_KEY + token;stringRedisTemplate.opsForHash().putAll(tokenKey,userMap);

 设置Token有效期

        //设置token有效期stringRedisTemplate.expire(tokenKey,LOGIN_USER_TTL,TimeUnit.MINUTES); //分钟

 

手机号验证，可添加一个插件，快捷查询各种校验的正则表达式：

将验证码存入redis并设置验证码有效期

         //模拟生成验证码String code = RandomUtil.randomNumbers(6);//手机号唯一stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY + phone, code, LOGIN_CODE_TTL, TimeUnit.MINUTES);

常量命名规范：

    public static final String LOGIN_CODE_KEY = "login:code:"; //验证码的keypublic static final Long LOGIN_CODE_TTL = 2L; //验证码的有效期public static final String LOGIN_USER_KEY = "login:token:"; //token的keypublic static final Long LOGIN_USER_TTL = 30L; //token的有效期