Redis实现登录注册的示例代码

   @Override
    public Result sedCode(String phone, HttpSession session) {
        //1. 校验手机号
        if (RegexUtils.isPhoneInvalid(phone)) {
            //2.如果不符合，返回错误信息
            return Result.fail("手机号格式错误");
        }
        // 3.从redis里获取验证码是否存在
        if(null==stringRedisTemplate.opsForValue().get("loginCode" + phone)){
            log.info("请勿重复获取验证码");
            return Result.fail("请勿重复获取验证码");
        }
        //4. 符合，生成验证码
        String code = RandomUtil.randomNumbers(6);
        //5. 保存验证码到redis,并设置有效期1分钟,在设置key的时候，可以提前设置一个常量，然后在这里引用即可
        stringRedisTemplate.opsForValue().set("loginCode:"+phone,code,1, TimeUnit.MINUTES);

        //5. 发送验证码 模拟发送
        log.debug("发送短信验证码成功，验证码:{}",code);
        //返回ok
        return Result.ok();
    }

@Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
        //1. 校验手机号
        String phone = loginForm.getPhone();
        if (RegexUtils.isPhoneInvalid(phone)) {
            return Result.fail("手机号格式错误");
        }
        //2. 获取Redis中的校验验证码
        String cacheCode = stringRedisTemplate.opsForValue().get("loginCode" + phone);

        // 3.获取表单中的验证码
        String code = loginForm.getCode();
        if (cacheCode == null || !cacheCode.toString().equals(code)){
            //3. 不一致，报错
            return Result.fail("验证码错误");
        }

        //4.一致，根据手机号查询用户
        User user = query().eq("phone", phone).one();

        //5. 判断用户是否存在
        if (user == null){
            //6. 不存在，创建新用户
            user = createUserWithPhone(phone);
        }

        //7.保存用户信息到session
        // 生成token
        String token = UUID.randomUUID().toString();
        // 将User转为Map
        UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
        Map<String, Object> userDtoMap = BeanUtil.beanToMap(userDTO);
        // 存储
        stringRedisTemplate.opsForHash().putAll("login:token:"+token,userDtoMap);
        // 设置有效期30分钟
        stringRedisTemplate.expire("login:token:"+token,30, TimeUnit.MINUTES);
        // 返回token给前端
        return Result.ok(token);
    }

public class RefreshTokenInterceptor implements HandlerInterceptor {

    private StringRedisTemplate stringRedisTemplate;

    public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1.获取请求头中的token
        String token = request.getHeader("authorization");
        if (StrUtil.isBlank(token)) {
            return true;
        }
        // 2.基于TOKEN获取redis中的用户
        String key  = "login:token:" + token;
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(key);
        // 3.判断用户是否存在
        if (userMap.isEmpty()) {
            return true;
        }
        // 5.将查询到的hash数据转为UserDTO
        UserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(), false);
        // 6.存在，保存用户信息到 ThreadLocal
        UserHolder.saveUser(userDTO);
        // 7.刷新token有效期
        stringRedisTemplate.expire(key, LOGIN_USER_TTL, TimeUnit.MINUTES);
        // 8.放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // 移除用户
        UserHolder.removeUser();
    }
}

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // ThreadLocal中获取用户信息
        if (UserHolder.getUser()==null){
            response.setStatus(401);
            return false;
        }
        // 放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        //移除用户
        UserHolder.removeUser();
    }
}

@Configuration
public class MvcConfig implements WebMvcConfigurer {
    @Autowired
    private StringRedisTemplate redisTemplate;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {


        // 登录拦截器
        registry.addInterceptor(new LoginInterceptor())
                .excludePathPatterns(
                        // 配置不需要被拦截的路径
                        "/shop/**",
                        "/voucher/**",
                        "/shop-type/**",
                        "/upload/**",
                        "/blog/hot",
                        "/user/code",
                        "/user/login"
                ).order(1);

        registry.addInterceptor(new RefreshTokenInterceptor(redisTemplate))
                .excludePathPatterns(
                        "/user/login",
                        "/user/code"
                ).order(0);
    }
}