private readonly Dictionary<Type, object> Instances = new Dictionary<Type, object>();

        private readonly Dictionary<string, object> InstanceByNames = new Dictionary<string, object>();

        /// <summary>

        /// 注册实例

        /// </summary>

        /// <param name="instance"> 要注册的实例 & lt;/param>

        /// <typeparam name="T"></typeparam>

        public void Register<T>(T instance)

        {

            var key = typeof(T);

            if (Instances.ContainsKey(key))

                Instances[key] = instance;

            else 

                Instances.Add(key,instance);

        }

        /// <summary>

        /// 获取实例

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <returns></returns>

        public T Get<T>() where T : class

        {

            var key = typeof(T);

            if (Instances.TryGetValue(key, out var retObj)) return retObj as T;

            return null;

        }