redis-map

    @Resource
    private RedisTemplate<String, Object> redisTemplateJackson;

   /**
     * 根据当前用户获取主账号
     * 使用redis做缓存，提高效率
     * @param userId
     * @return
     */
    public String getMainUserIdByCurrentUserId(String userId){

        if(userId == null){
            throw new BusinessException("用户ID不能为空！");
        }

        //缓存主账号
        String mainUserId = null;
        Object obj = redisTemplateJackson.opsForHash().get(MAIN_USER_ID, userId);
        if(obj == null){
            //查询账号
            B2bUserVO b2bUserVO = userCenterFacade.getUser(userId);
            if(b2bUserVO == null){
                throw new BusinessException("查询账号失败！");
            }
            mainUserId = UserUtil.checkIsSubUser(b2bUserVO.getParentId()) ? b2bUserVO.getParentId() : b2bUserVO.getId();
            //缓存账号
            redisTemplateJackson.opsForHash().put(MAIN_USER_ID, userId, mainUserId);
        }else {
            mainUserId = obj.toString();
        }
        return mainUserId;

    }