C#未将对象引用设置到对象的实例怎么解决

悬赏园豆：10 [已关闭问题] 关闭于 2013-10-19 10:42

我在模拟一个http请求,代码如下:

string url3 = "http://restar.gmcc.net:9087/ResConfigure/restar/resDataQuery.action";
            HttpWebRequest request4 = (HttpWebRequest)HttpWebRequest.Create(url3);
            request4.Method = "POST";
            request4.Headers.Add("Accept-Language: zh-cn");
            request4.Headers.Add("Accept-Encoding: gzip, deflate");
            request4.AllowAutoRedirect = true;
            request4.KeepAlive = true;
            request4.Referer = "http://restar.gmcc.net:9088/webmaster/air/managerview/index.jsp";
            request4.Host = "restar.gmcc.net:9087";
            request4.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)";
            request4.ContentType = "application/x-www-form-urlencoded";
            request4.CookieContainer = cc;
            string data2 = "object=v4-system-messageRead_getMessage&READ_USERID=guozhibiao&userName=guozhibiao";
            byte[] postdata = Encoding.ASCII.GetBytes(data2);
            request4.ContentLength = postdata.Length;
            Stream outstream4 = request4.GetRequestStream();
            outstream.Write(postdata, 0, postdata.Length);
            outstream.Close();