c# 泛型new T

        /// <summary>

        /// 獲取Service層的類實例,在沒有寫配置文件時使用

        /// </summary>

        /// <typeparam name="T">當前傳入的類名</typeparam>

        /// <returns>類實體</returns>

        public static T CreateInstance<T>() where T : new()

        {

            return new T();

        }