/// <summary>
        /// 从容器中解析指定类型
        /// </summary>
        public object Resolve(Type type)
        {
            Activator activator;

            if (!_cache.TryGet(type, out activator))
            {
                throw new XFrameworkException(type.FullName + " is not registered");
            }

            if (activator.Instance != null)
            {
                return(activator.Instance);
            }

            Func <object> func = activator.Builder;

            if (func == null)
            {
                XFrameworkException.Throw(type.FullName + " is not registered");
            }
            return(func());
        }
        /// <summary>
        /// 从容器中解析指定类型
        /// </summary>
        public T Resolve <T>() where T : class
        {
            Activator activator;

            if (!_cache.TryGet(typeof(T), out activator))
            {
                throw new XFrameworkException(typeof(T).FullName + " is not registered");
            }

            if (activator.Instance != null)
            {
                return((T)activator.Instance);
            }

            Func <object> func = activator.Builder;

            if (func == null)
            {
                XFrameworkException.Throw(typeof(T).FullName + " is not registered");
            }
            return((T)func());
        }