/// <summary>
        /// 根据用户ID获取该用户所有的映射信息
        /// </summary>
        /// <param name="userId">用户ID</param>
        /// <returns>用户所有的映射信息</returns>
        public IList <Mapping> GetMappingByLocalUserId(int userId)
        {
            var spec = mappingRepository.CreateSpecification()
                       .Where(o => o.LocalUserId == userId);

            return(mappingRepository.FindAll(spec));
        }