public string GetFullName(int id) { try { User user = GetUserById(id); string deptName = _deptService.GetDeptName(user.ParentId); //处理其他逻辑 return($"{user.Name}[{deptName}]"); } catch (Exception e) { throw new UserFullNameGenException($"用户 Id 为 {id} 的 FullName 生产失败", e); // throw e; } }