WebRequest wq = WebRequest.Create(this.address);HttpWebRequest hq = wq as HttpWebRequest; string username = "keguangqiang@163.com";string password = "3216731ks";string appkey = "5786724301"; System.Net.CredentialCache cache = new CredentialCache();cache.Add(new Uri(this.address), "Basic", new NetworkCredential(username, password));hq.Credentials = cache;hq.Headers.Add("Authorization","Basic " +Convert.ToBase64String(new System.Text.ASCIIEncoding().GetBytes(username+":"+password))); System.Net.WebResponse webresponse = hq.GetResponse();System.IO.Stream receiveStream = webresponse.GetResponseStream();System.IO.StreamReader reader = new System.IO.StreamReader(receiveStream, System.Text.Encoding.UTF8);string json = reader.ReadToEnd();