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    如何通過(guò)編程方式獲取alexa排名的數(shù)據(jù)

    發(fā)布時(shí)間:  2012/8/27 9:41:56
     Alexa 是以發(fā)布世界網(wǎng)站排名而引人注目的一個(gè)網(wǎng)站。其實(shí),此網(wǎng)站的搜索引擎也很好用,但是“網(wǎng)站排名”卻是它吸引眼球的最主要原因。

      以網(wǎng)站導(dǎo)航起家的Alexa創(chuàng)建于1996年4月,他們的目的是讓Internet沖浪者在分享虛擬世界資源的同時(shí),更多地參與Internet資源的組織。2002年5月Alexa放棄了自己的搜索引擎與Google合作。他們每天在網(wǎng)上搜集超過(guò)1,000GB的信息,然后進(jìn)行整合發(fā)布,F(xiàn)在他們搜集的URL數(shù)量已經(jīng)超過(guò)了Google。下圖是他們自己給出的一個(gè)信息量比較圖。縱軸為已有的URL地址的量,以十億為單位。也就是說(shuō)在量上,Alexa位居世界四大名搜索引擎第一位,已經(jīng)超過(guò)了350億。焦點(diǎn)在于,Alexa不僅給出這350多億網(wǎng)址的鏈接,而且為其中的每一個(gè)網(wǎng)站進(jìn)行了排名?梢哉f(shuō),Alexa是當(dāng)前擁有URL數(shù)量最龐大,排名信息發(fā)布最詳盡的網(wǎng)站。

      Alexa的世界網(wǎng)站排名主要分兩種:綜合排名,可以叫做絕對(duì)排名,即特定的一個(gè)網(wǎng)站在所有350多億網(wǎng)站中的名次。Alexa每三個(gè)月公布一次新的網(wǎng)站綜合排名。此排名的依據(jù)是用戶鏈接數(shù)(Users Reach)和頁(yè)面瀏覽數(shù)(Page Views)三個(gè)月累積的幾何平均值。分類排名一是按主題分類,比如新聞、娛樂(lè)、購(gòu)物等,Alexa給出某個(gè)特定網(wǎng)站在同一類網(wǎng)站中的名次。Alexa將其收集到的網(wǎng)站共分了16個(gè)大類,每個(gè)類下又分為多個(gè)主題。

      阿里媽媽的網(wǎng)站也有Alexa網(wǎng)站排名(http://tool.alimama.com/site.php)、中國(guó)站長(zhǎng)網(wǎng)站(http://alexa.chinaz.com/Index.asp)也提供Alexa排名查詢,還有很多網(wǎng)站也提供了它們的Alexa排名,這些排名的數(shù)據(jù)都是通過(guò)調(diào)用稱為Alexa Web Information Service (AWIS)的服務(wù),地址是http://awis.amazonaws.com/doc/2005-07-11/AWSAlexa.wsdl。

      那么我們?nèi)绾尾拍苁褂眠@些服務(wù),以便創(chuàng)建我們的Alexa排名查詢操作呢?

      1. 首先你通過(guò)網(wǎng)站連接http://www.amazon.com/gp/browse.html?node=12782661,了解它是做什么的,收費(fèi)如何(1000次約人民幣1元左右)。

      2. 注冊(cè)一個(gè)帳號(hào),綁定您的銀行卡或者信用卡

      3. 成功后會(huì)給你一個(gè)發(fā)送一個(gè)郵件,并可以登錄查看你的專用公鑰私鑰字符串。

      4. 根據(jù)這些你就可以訪問(wèn)它的AWIS訪問(wèn)了,如果你要了解進(jìn)一步的開(kāi)發(fā)的話,請(qǐng)參考這里的文檔:

      http://docs.amazonwebservices.com/AlexaWebInfoService/2005-07-11/

      5. 如果你有疑問(wèn),可以在論壇中詢問(wèn),當(dāng)然都是老外的了。http://developer.amazonwebservices.com/connect/forum.jspa?forumID=14

      6.AWIS有很多Response,如UrlInfoResponseResponse、CategoryBrowseResponseResponse、SitesLinkingInResponseResponse、TrafficHistoryResponseResponse、CategoryListingsResponseResponse、CrawlResponseResponse等,這些包含了各類排名等數(shù)據(jù)。

      7. 我調(diào)用了AWIS做了一個(gè)小的測(cè)試應(yīng)用,程序界面如下:

      8. 最后貼一些代碼輔助大家

      獲取Response的信息#region 獲取Response的信息

      public UrlInfoResponseResponse GetUrlInfoResponse(string website, string action, string responseGroup)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      UrlInfoRequestSecurity usecurity = new UrlInfoRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      UrlInfoRequest request = new UrlInfoRequest();

      request.Url = website;

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      UrlInfo urlInfo = new UrlInfo();

      urlInfo.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      UrlInfoResponse uresponse = alexa.UrlInfo(urlInfo);

      return uresponse.Response;

      }

      public CategoryBrowseResponseResponse GetCategoryBrowseResponse(string website, string action, string responseGroup, string path, bool description)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      CategoryBrowseRequestSecurity usecurity = new CategoryBrowseRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      CategoryBrowseRequest request = new CategoryBrowseRequest();

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      request.Path = path;

      request.Descriptions = description.ToString();

      CategoryBrowse browse = new CategoryBrowse();

      browse.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      CategoryBrowseResponse uresponse = alexa.CategoryBrowse(browse);

      return uresponse.Response;

      }

      public SitesLinkingInResponseResponse GetSitesLinkingInResponse(string website, string action, string responseGroup)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      SitesLinkingInRequestSecurity usecurity = new SitesLinkingInRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      SitesLinkingInRequest request = new SitesLinkingInRequest();

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      request.Url = website;

      SitesLinkingIn browse = new SitesLinkingIn();

      browse.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      SitesLinkingInResponse uresponse = alexa.SitesLinkingIn(browse);

      return uresponse.Response;

      }

      public TrafficHistoryResponseResponse GetTrafficHistoryResponse(string website, string action, string responseGroup)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      TrafficHistoryRequestSecurity usecurity = new TrafficHistoryRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      TrafficHistoryRequest request = new TrafficHistoryRequest();

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      request.Url = website;

      TrafficHistory browse = new TrafficHistory();

      browse.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      TrafficHistoryResponse uresponse = alexa.TrafficHistory(browse);

      return uresponse.Response;

      }

      public CategoryListingsResponseResponse GetCategoryListingsResponse(string website, string action, string responseGroup, string path, bool recursive)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      CategoryListingsRequestSecurity usecurity = new CategoryListingsRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      CategoryListingsRequest request = new CategoryListingsRequest();

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      request.Path = path;//this.cmbListingPath.Text

      request.Recursive = recursive.ToString();//this.chkRecurse.Checked.ToString();

      CategoryListings browse = new CategoryListings();

      browse.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      CategoryListingsResponse uresponse = alexa.CategoryListings(browse);

      return uresponse.Response;

      }

      public CrawlResponseResponse GetCrawlResponse(string website, string action, string responseGroup)

      {

      string timestamp = Helper.GetTimestamp();

      string signature = Helper.MakeSignature(action + timestamp, privateKey);

      //Set the request security settings

      CrawlRequestSecurity usecurity = new CrawlRequestSecurity();

      usecurity.AWSAccessKeyId = publicKey;

      usecurity.Signature = signature;

      usecurity.Timestamp = timestamp;

      CrawlRequest request = new CrawlRequest();

      request.ResponseGroup = responseGroup;

      request.Security = usecurity;

      request.Url = website;

      Crawl browse = new Crawl();

      browse.Request = request;

      AWSAlexa alexa = new AWSAlexa();

      CrawlResponse uresponse = alexa.Crawl(browse);

      return uresponse.Response;

      }

      #endregion


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