Ioc

#region Assembly Microsoft.Practices.Unity, Version=2.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
// F:CodeFor91BMYUN20WebAPPSourcepackagesUnity.2.0lib20Microsoft.Practices.Unity.dll
#endregion

using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Configuration;

/// <summary>
    /// 注入和反转 
    /// 单例
    /// </summary>
    public class Ioc
    {
        private readonly IUnityContainer _unityContainer;
        private static Hashtable objCache = new Hashtable();

        private static Ioc _instance;
        public static Ioc Instance
        {
            get { return _instance ?? (_instance = new Ioc()); }
        }

        private Ioc()
        {
            _unityContainer = new UnityContainer();
            try
            {
                UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
                section.Configure(_unityContainer);
            }
            catch(Exception)
            {
            }
        }

        /// <summary>
        /// 单例获取
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public T GetService<T>()
        {
            string key = typeof(T).ToString();

            if(objCache.ContainsKey(key))
            {
                return (T)objCache[key];
            }
            else
            {
                T tmp = _unityContainer.Resolve<T>();
                objCache[key] = tmp;
                return tmp;
            }
        }

        public object GetService(Type serviceType)
        {
            return _unityContainer.Resolve(serviceType);
        }
    }

ps:

T不能是单例类