查询alexa全球，中国排名，google pr，google收录和百代码,CSharp代码库,德仔网

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【CSharp】查询alexa全球，中国排名，google pr，google收录和百
作者:dezai / 发布于2014/1/27/ 467
可以查询alexa全球，中国排名，google pr，google收录和百度收录及快照，方便友链时查询这个网站是否被google或者百度惩罚过
using System;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;

namespace LibrarySEO
{
  /// <summary>
  /// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  /// Copyright (C)  http://www.taobaonzpd.com/ http://www.tbshc.com http://www.tb10go.coom http://www.anmmoqi10.com/ http://www.hainandh.com/
  /// 文件名：LibrarySEO
  /// 作 者：李文辉
  /// 日 期：2011.12.15
  /// 描 述：查询alexa全球，中国排名，google pr，google收录和百度收录及快照
  /// 版 本：李文辉-SEO分析工具 V1.0
  /// Email:jokeyhui@163.com
  /// 修改历史纪录
  /// 版 本    修改时间   修改人  修改内容
  /// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 
  /// </summary>
  public class SEOHelper
  {
  }

  /// <summary>
  /// 下载信息url的html内容的类
  /// </summary>
  public class Net
  {
    /// <summary>
    /// 创建URI
    /// </summary>
    /// <param name="u"></param>
    /// <returns></returns>
    public static Uri CreatUri(string u)
    {
      if (string.IsNullOrEmpty(u)) return null;
      else
      {
        u = u.Trim('/', ' ').ToLower();
        if (!u.StartsWith("http://") && !u.StartsWith("https://")) u = "http://" + u;
        try { return new Uri(u); }
        catch { return null; }
      }
    }
    /// <summary>
    /// 使用webclient
    /// </summary>
    /// <param name="url"></param>
    /// <returns></returns>
    public static string GetHtml(string url)
    {
      string html = null;
      WebClient wc = new WebClient();
      try { html = wc.DownloadString(url); }
      catch { }
      wc.Dispose();
      return html;
    }
    /// <summary>
    /// 使用HttpWebRequest对象
    /// </summary>
    /// <param name="url"></param>
    /// <param name="encoding">编码</param>
    /// <returns></returns>
    public static string GetHtml(string url, Encoding encoding)
    {
      HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
      string html = null;
      try
      {
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        StreamReader srd = new StreamReader(response.GetResponseStream(), encoding);
        html = srd.ReadToEnd();
        srd.Close();
        response.Close();
      }
      catch { }
      return html;
    }
  }
  /// <summary>
  /// 获取google pageran的类
  /// </summary>
  public class GooglePR
  {
    private static string tryMore(string strUrl)
    {
      //string sURL = "http://toolbarqueries.google.com/search?client=navclient-auto&ch=" + GetPR(strUrl) + "&ie=UTF-8&oe=UTF-8&features=Rank&q=info:" + System.Web.HttpUtility.UrlEncode(strUrl);
      string sURL = "http://toolbarqueries.google.com/tbr?client=navclient-auto&features=Rank&ch=" + GetPR(strUrl) + "&q=info:" + System.Web.HttpUtility.UrlEncode(strUrl);
      string result = Net.GetHtml(sURL);
      if (result != null)
      {
        result = result.Trim();
        if (result.IndexOf(':') > 0)
        {
          string[] pr = result.Split(':');
          if (pr.Length == 3) return pr[2].ToString();
        }
      }
      return "0";
    }
    public static string GetPageRank(string strUrl)
    {
      string pr = "0";
      if (!string.IsNullOrEmpty(strUrl))
      {
        Uri u = Net.CreatUri(strUrl);
        if (u != null)
        {
          string host = u.Host, path = u.PathAndQuery;
          if (path == "/")
          {
            //查询主域名，非路径.其他2级域名只进行一次查询.
            //如果是顶级域名或者www2级域名，得到的值为0时，查询www2级域名或者顶级域名，然后再试http://
            string[] arr = host.Split('.');
            if (arr[0] == "www" || arr.Length == 2)
            {
              pr = tryMore(host);
              if (pr == "0")
              {
                pr = tryMore(arr.Length == 2 ? "www." + host : host.Replace("www.", ""));
                if (pr == "0")
                {
                  pr = tryMore("http://" + host);
                  if (pr == "0") pr = tryMore("http://" + (arr.Length == 2 ? "www." + host : host.Replace("www.", "")));
                }
              }
            }
            else
            {
              pr = tryMore(u.Host);
              if (pr == "0") pr = tryMore("http://" + u.Host);
            }
          }
          else//查询路径
          {
            pr = tryMore(u.Host + path);
            if (pr == "0") pr = tryMore("http://" + u.Host + path);
          }
        }
      }
      return pr;
    }
    private static string GetPR(string url)
    {
      url = "info:" + url;
      string ch = GoogleCH(str_asc(url)).ToString();
      ch = "6" + ch;
      return ch;
    }
    private static int[] str_asc(string str)
    {
      if (str == null || str == string.Empty) return null;
      int[] result = new int[str.Length];
      for (int i = 0; i < str.Length; i++) result[i] = (int)str[i];
      return result;
    }
    private static long yiweitwo(long a, long b)
    {
      long z = 0x80000000;
      if ((z & a) != 0)
      {
        a = (a >> 1);
        a &= (~z);
        a |= 0x40000000;
        a = ((int)a >> (int)(b - 1));
      }
      else
      {
        a = ((int)a >> (int)b);
      }
      return a;
    }
    private static int[] yiwei(long a, long b, long c)
    {
      a -= b; a -= c; a ^= (yiweitwo(c, 13));
      b -= c; b -= a; b ^= (a << 8);
      c -= a; c -= b; c ^= (yiweitwo(b, 13));
      a -= b; a -= c; a ^= (yiweitwo(c, 12));
      b -= c; b -= a; b ^= (a << 16);
      c -= a; c -= b; c ^= (yiweitwo(b, 5));
      a -= b; a -= c; a ^= (yiweitwo(c, 3));
      b -= c; b -= a; b ^= (a << 10);
      c -= a; c -= b; c ^= (yiweitwo(b, 15));
      return new int[] { (int)a, (int)b, (int)c };

    }
    private static int GoogleCH(int[] url)
    {
      int length = url.Length;
      long a = 0x9E3779B9;
      long b = 0x9E3779B9;
      long c = 0xE6359A60;
      int k = 0;
      int len = length;
      int[] mid;
      while (len >= 12)
      {
        a += (url[k + 0] + (url[k + 1] << 8) + (url[k + 2] << 16) + (url[k + 3] << 24));
        b += (url[k + 4] + (url[k + 5] << 8) + (url[k + 6] << 16) + (url[k + 7] << 24));
        c += (url[k + 8] + (url[k + 9] << 8) + (url[k + 10] << 16) + (url[k + 11] << 24));
        mid = yiwei(a, b, c);
        a = mid[0]; b = mid[1]; c = mid[2];
        k += 12;
        len -= 12;
      }
      c += length;
      switch (len)
      {
        case 11:
          {
            c += (url[k + 10] << 24);
            c += (url[k + 9] << 16);
            c += (url[k + 8] << 8);
            b += (url[k + 7] << 24);
            b += (url[k + 6] << 16);
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;
          }
        case 10:
          {
            c += (url[k + 9] << 16);
            c += (url[k + 8] << 8);
            b += (url[k + 7] << 24);
            b += (url[k + 6] << 16);
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;
          }

        case 9:
          {
            c += (url[k + 8] << 8);
            b += (url[k + 7] << 24);
            b += (url[k + 6] << 16);
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;

          }

        case 8:
          {
            b += (url[k + 7] << 24);
            b += (url[k + 6] << 16);
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;

          }

        case 7:
          {

            b += (url[k + 6] << 16);
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;

          }

        case 6:
          {
            b += (url[k + 5] << 8);
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;
          }

        case 5:
          {
            b += (url[k + 4]);
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;

          }

        case 4:
          {
            a += (url[k + 3] << 24);
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;

          }

        case 3:
          {
            a += (url[k + 2] << 16);
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;
          }
        case 2:
          {
            a += (url[k + 1] << 8);
            a += (url[k + 0]);
            break;
          }

        case 1:
          {
            a += (url[k + 0]);
            break;
          }

      }
      mid = yiwei(a, b, c);
      return mid[2];
    }
  }
  /// <summary>
  /// 获取Alexa排名
  /// </summary>
  public class Alexa
  {
    /// <summary>
    /// 通过API接口获取数据，只能获取全球排名
    /// </summary>
    /// <param name="u"></param>
    /// <returns></returns>
    public static string API(string u)
    {
      string rank = "NaN";
      try
      {
        string xmlString = LibrarySEO.Net.GetHtml("http://data.alexa.com/data/+wQ411en8000lA?cli=10&dat=snba&ver=7.0&cdt=alx_vw=20&"
          + "wid=12206&act=00000000000&ss=1680x1050&bw=964&t=0&ttl=35371&vis=1&rq=4&url=" + u);
        Match m = Regex.Match(xmlString, "<POPULARITY URL=\"\\s*.+?\\s*\" TEXT=\"\\s*(\\d+)\\s*\"/>"
          , RegexOptions.IgnoreCase | RegexOptions.Compiled);
        if (m.Groups[1].Value != "") rank = m.Groups[1].Value;
      }
      catch { }
      return rank;
    }
    /// <summary>
    /// 直接从alexa的网站下载html代码分析，获取中国及世界排名，返回内容为json
    /// </summary>
    /// <param name="u"></param>
    /// <returns></returns>
    public static string Latest(string u)
    {
      string rank = "{rank:'{0}',cnrank:'{1}'}";
      try
      {
        string htmlString = LibrarySEO.Net.GetHtml("http://www.alexa.com/siteinfo/" + u);
        Match m = Regex.Match(htmlString, "<th>3\\s*month</th>\\s*<td class=\"avg\\s*\">\\s*([\\d,]+)\\s*</td>"
          , RegexOptions.IgnoreCase | RegexOptions.Compiled);
        rank = rank.Replace("{0}", m.Groups[1].Value);
        m = Regex.Match(htmlString, "class=\"data\">\\s*<img[^>]+>\\s*([\\d,]+)\\s*</div>"
          , RegexOptions.IgnoreCase | RegexOptions.Compiled);
        rank = rank.Replace("{1}", m.Groups[1].Value);
      }
      catch { rank = "{rank:'NaN',cnrank:'NaN'}"; }
      return rank;
    }
  }
  /// <summary>
  /// 获取google和百度收录数量，为百时同时返回快找时间
  /// </summary>
  public class GoogleBaiduIndex
  {
    /// <summary>
    /// 获取数据
    /// </summary>
    /// <param name="u"></param>
    /// <param name="isGG"></param>
    /// <param name="isJson">是否返回json格式的数据，否则返回用|分隔的数据</param>
    /// <returns></returns>
    public static string IndexGoogleBaidu(string u, bool isGG, bool isJson)
    {
      string rst = "", html = "";
      u = (isGG ? "http://www.google.com.hk/search?q=" : "http://www.baidu.com/s?wd=") + "site%3A" + u;
      html = LibrarySEO.Net.GetHtml(u, isGG ? Encoding.GetEncoding(950) : Encoding.GetEncoding(936));
      if (html != null)
      {//找到约 4,210 条结果
        Regex r = new Regex(isGG ? @"共約\s*<b>([\d,]+)</b>\s*筆" : @"找到相关结果约?\s*([\d,]+)\s*个", RegexOptions.Compiled);
        Match m = r.Match(html);
        if (isGG) rst = isJson ? "{gg:'" + m.Groups[1].Value + "'}" : m.Groups[1].Value;
        else rst = isJson ? "{bd:'" + m.Groups[1].Value + "',bdTime:'"
          + Regex.Match(html, @"/\s*(\d{4}(-\d{1,2}){2})", RegexOptions.Compiled).Groups[1].Value + "'}"
        : m.Groups[1].Value + "|" + Regex.Match(html, @"/\s*(\d{4}(-\d{1,2}){2})", RegexOptions.Compiled).Groups[1].Value;
      }
      else rst = "{success:false}";
      return rst;
    }
  }
  /// <summary>
  /// 获取百度权重
  /// </summary>
  public class BaiduWeight
  {
    /// <summary>
    /// 获取权重
    /// </summary>
    /// <param name="u"></param>
    /// <returns></returns>
    public static string Weight(string u)
    {
      string w = "n";
      if (!string.IsNullOrEmpty(u))
      {
        Uri uri = Net.CreatUri(u);
        if (uri != null)
        {
          string html = Net.GetHtml("http://www.aizhan.com/getbr.php?url=" + uri.Host.Replace("www.", "") + "&style=1");
          if (html != null)
            w = Regex.Match(html, @">([n\d])</a>", RegexOptions.IgnoreCase | RegexOptions.Compiled).Groups[1].Value;
          if (w == "") w = "n";
        }
      }
      return w;
    }
  }
}
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