Himall商城Web帮助类 获得http请求数据

 ///

        /// 获得http请求数据
        ///

        /// 请求地址
        /// 请求方式
        /// 发送数据
        /// 编码
        /// 超时值
        ///
        //Add:Dzy[150720]从原GetRequestData拆分出来
        public static HttpWebResponse GetURLResponse(string url, string method = "get", string postData = "", Encoding encoding = null, int timeout = 20000)
        {
            if (encoding == null) encoding = Encoding.UTF8;   //默认UTF-8
            if (!(url.Contains("http://") || url.Contains("https://")))
                url &#