c# 获取google pr值 - 苏飞论坛

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我是用www.baidu.com 这域名测试的
根据不同域名的计算得出 ch 的值
然后post  如果这个地址。直接敲这个pr 接口地址
http://www.google.cn/search?client=navclient-auto&features=Rank:&q=info:http://www.baidu.com&ch=62009202064

返回错误页面。请管理员赐教  谢谢。
  string responseFromServer = "";
            string s = CalculateChecksum(strUrl);

            //try
            //{
            // HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create(@"http://www.google.cn/search?client=navclient-auto&features=Rank:&q=info:" + strUrl + "&ch=" + s);

            // // HttpWReq.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30)";
            // // HttpWReq.Accept = @"image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, */*";

            // HttpWebResponse HttpWResp = (HttpWebResponse)HttpWReq.GetResponse();
            // Stream dataStream = HttpWResp.GetResponseStream();
            // StreamReader reader = new StreamReader(dataStream, System.Text.Encoding.GetEncoding("GB2312"));
            // responseFromServer = reader.ReadToEnd();
            //}
            //catch(Exception ex)
            //{

            //}
            //string[] sp = responseFromServer.Split(':');
            //if (sp.Length == 3)
            //{
            // strResult = "谷歌PR:" + sp[2].ToString();
            //}
            //else
            //{
            // strResult = "谷歌PR:0";
            //}

            string url="http://www.google.cn/search?client=navclient-auto&features=Rank:&q=info:" + strUrl + "&ch=" + s+"";
            responseFromServer = GetUrltoHtml(url, 2000);

            string[] sp = responseFromServer.Split(':');
            if (sp.Length == 3)
            {
                  strResult = "谷歌PR:" + sp[2].ToString();
            }
            else
            {
                  strResult = "谷歌PR:0";
            }

作者: mqtheone 时间: 2014-9-5 10:19
问题已经解决  。贴一下我的解决方案已经源码

public  class CheckSum
{

      ///
      /// Google PageRank的Checksum算法。
      ///

      public static int GooglePR(string url)
      {
         string checksum = GoogleCH(url);
         string query = string.Format("http://toolbarqueries.google.com/tbr?client=navclient-auto&ch={0}&features=Rank&q=info:{1}", checksum, url);

         try
         {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(query);
            string response = new StreamReader(request.GetResponse().GetResponseStream()).ReadToEnd();
            if (response.Length == 0)
                  return 0;
            else
                  return int.Parse(Regex.Match(response, "Rank_1:[0-9]

[0-9]+)").Groups[1].Value);
         }
         catch (Exception)
         {
            return -1;
         }
      }

      private const UInt32 GOOGLE_MAGIC = 0xE6359A60;
      private static void _mix(ref UInt32 a, ref UInt32 b, ref UInt32 c)
      {
         a -= b; a -= c; a ^= c >> 13;
         b -= c; b -= a; b ^= a << 8; c -= a; c -= b; c ^= b >> 13;
         a -= b; a -= c; a ^= c >> 12;
         b -= c; b -= a; b ^= a << 16; c -= a; c -= b; c ^= b >> 5;
         a -= b; a -= c; a ^= c >> 3;
         b -= c; b -= a; b ^= a << 10; c -= a; c -= b; c ^= b >> 15;
      }
      public static string GoogleCH(string url)
      {
         url = string.Format("info:{0}", url);

         int length = url.Length;

         UInt32 a, b;
         UInt32 c = GOOGLE_MAGIC;

         int k = 0;
         int len = length;

         a = b = 0x9E3779B9;

         while (len >= 12)
         {
            a += (UInt32)(url[k + 0] + (url[k + 1] << 8) + (url[k + 2] << 16) + (url[k + 3] << 24));
            b += (UInt32)(url[k + 4] + (url[k + 5] << 8) + (url[k + 6] << 16) + (url[k + 7] << 24));
            c += (UInt32)(url[k + 8] + (url[k + 9] << 8) + (url[k + 10] << 16) + (url[k + 11] << 24));
            _mix(ref a, ref b, ref c);
            k += 12;
            len -= 12;
         }
         c += (UInt32)length;
         switch (len) /* all the case statements fall through */
         {
            case 11:
                  c += (UInt32)(url[k + 10] << 24);
                  goto case 10;
            case 10:
                  c += (UInt32)(url[k + 9] << 16);
                  goto case 9;
            case 9:
                  c += (UInt32)(url[k + 8] << 8);
                  goto case 8;
            /* the first byte of c is reserved for the length */
            case 8:
                  b += (UInt32)(url[k + 7] << 24);
                  goto case 7;
            case 7:
                  b += (UInt32)(url[k + 6] << 16);
                  goto case 6;
            case 6:
                  b += (UInt32)(url[k + 5] << 8);
                  goto case 5;
            case 5:
                  b += (UInt32)(url[k + 4]);
                  goto case 4;
            case 4:
                  a += (UInt32)(url[k + 3] << 24);
                  goto case 3;
            case 3:
                  a += (UInt32)(url[k + 2] << 16);
                  goto case 2;
            case 2:
                  a += (UInt32)(url[k + 1] << 8);
                  goto case 1;
            case 1:
                  a += (UInt32)(url[k + 0]);
                  break;
            default:
                  break;
            /* case 0: nothing left to add */
         }

         _mix(ref a, ref b, ref c);

         return string.Format("6{0}", c);
      }

}

作者: mqtheone 时间: 2014-9-5 10:19
调用一下这个类就可以登录饿。

作者: Cheungnotes 时间: 2014-9-5 11:44
我只是路过打酱油的。

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