c# 泛型new T

        /// <summary>

        /// 获取Service层的类实例,在没有写配置文件时使用

        /// </summary>

        /// <typeparam name="T">当前传入的类名</typeparam>

        /// <returns>类实体</returns>

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

        {

            return new T();

        }