如何解决解决iis7.5服务器上.net 获取不到https页面的信息

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我的获取页面需要cookie，不需要的可以去掉；

GET的方法：

复制代码 代码如下:

/// <summary>
        /// 获取URL访问的HTML内容 获取https 页面的
        /// </summary>
        /// <param name="Url">URL地址</param>
        /// <returns>HTML内容</returns>
        public static string GetWebContent(string Url, CookieContainer cookieContainer)
        {
            string strResult = "";
            try
            {
                ServicePointManager.Expect100Continue = true;
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                request.CookieContainer = cookieContainer;
                request.Timeout = 30000;
                request.Headers.Set("Pragma", "no-cache");

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream streamReceive = response.GetResponseStream();

                Encoding encoding = Encoding.GetEncoding("utf-8");
                StreamReader streamReader = new StreamReader(streamReceive, encoding);
                strResult = streamReader.ReadToEnd();
            }
            catch
            {

            }
            return strResult;
        }

 POST的方法：

复制代码 代码如下:

/// <summary>
        /// post提交数据到https
        /// </summary>
        /// <param name="posturl"></param>
        /// <param name="postdata"></param>
        /// <param name="header"></param>
        /// <param name="cookieContainer"></param>
        /// <returns></returns>
        public static string SetPostHtml(string posturl, string postdata, HttpHeader header, CookieContainer cookieContainer)
        {
            string restr = "";
            ServicePointManager.Expect100Continue = true;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
            HttpWebRequest request = null;
            HttpWebResponse response = null;
            request = (HttpWebRequest)WebRequest.Create(posturl);
            request.CookieContainer = cookieContainer;
            request.Method = header.method;
            request.Referer = header.Referer;
            request.ContentType = header.contentType;
            byte[] postdatabyte = Encoding.UTF8.GetBytes(postdata);
            request.ContentLength = postdatabyte.Length;
            request.AllowAutoRedirect = false;
            request.KeepAlive = true;
            //提交请求
            Stream stream;
            stream = request.GetRequestStream();
            stream.Write(postdatabyte, 0, postdatabyte.Length);
            stream.Close();
            //接收响应
            response = (HttpWebResponse)request.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream()))
            {
                restr = reader.ReadToEnd().ToString();
            }
            return restr;
        }

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