// 定義私有構(gòu)造函數(shù)，使外界不能創(chuàng)建該類實(shí)例
        private Singleton()
        {
        }

        //定義公有方法提供一個(gè)全局訪問點(diǎn)。
        public static Singleton GetInstance()
        {
            //這里的lock其實(shí)使用的原理可以用一個(gè)詞語來概括“互斥”這個(gè)概念也是操作系統(tǒng)的精髓
            //其實(shí)就是當(dāng)一個(gè)進(jìn)程進(jìn)來訪問的時(shí)候，其他進(jìn)程便先掛起狀態(tài)
            if (mySingleton == null)
            {
                mySingleton = new Singleton();
            }
            return mySingleton;
        }
    }

        // 定義一個(gè)標(biāo)識(shí)確保線程同步
        private static readonly object locker = new object();

        // 定義私有構(gòu)造函數(shù)，使外界不能創(chuàng)建該類實(shí)例
        private Singleton()
        {
        }

        //定義公有方法提供一個(gè)全局訪問點(diǎn)。
        public static Singleton GetInstance()
        {
            //這里的lock其實(shí)使用的原理可以用一個(gè)詞語來概括“互斥”這個(gè)概念也是操作系統(tǒng)的精髓
            //其實(shí)就是當(dāng)一個(gè)進(jìn)程進(jìn)來訪問的時(shí)候，其他進(jìn)程便先掛起狀態(tài)
            if (mySingleton == null)//區(qū)別就在這里
            {
                lock (locker)
                {
                    // 如果類的實(shí)例不存在則創(chuàng)建，否則直接返回
                    if (mySingleton == null)
                    {
                        mySingleton = new Singleton();
                    }
                }
            }
            return mySingleton;
        }
    }

        //---------------------定義上下文屬性
        #region 實(shí)例構(gòu)造函數(shù) 初始化業(yè)務(wù)倉(cāng)儲(chǔ) + OperateContext()
        public OperateContext()
        {
            BLLSession = DI.SpringHelper.GetObject<IBLL.IBLLSession>("BLLSession");
        }
        #endregion

        #region Http上下文 以及相關(guān)屬性
        /// <summary>
        /// Http上下文
        /// </summary>
        HttpContext ContextHttp
        {
            get
            {
                return HttpContext.Current;
            }
        }

        HttpResponse Response
        {
            get
            {
                return ContextHttp.Response;
            }
        }
        HttpRequest Request
        {
            get
            {
                return ContextHttp.Request;
            }
        }
        HttpSessionState Session
        {
            get
            {
                return ContextHttp.Session;
            }
        }
        #endregion

        #region 獲取當(dāng)前操作上下文(存在線程中，提高效率) + OperateContext Current
        // <summary>
        /// 獲取當(dāng)前操作上下文(存在線程中，提高效率)
        /// </summary>
        public static OperateContext Current
        {
            get
            {
                OperateContext o = CallContext.GetData(typeof(OperateContext).Name) as OperateContext;
                if (o == null)
                {
                    o = new OperateContext();
                    CallContext.SetData(typeof(OperateContext).Name, o);
                }
                return o;
            }
        }
        #endregion