如何通过编程方式获取alexa排名的数据

Alexa 是以发布世界网站排名而引人注目的一个网站。其实，此网站的搜索引擎也很好用，但是“网站排名”却是它吸引眼球的最主要原因。

以网站导航起家的Alexa创建于1996年4月，他们的目的是让Internet冲浪者在分享虚拟世界资源的同时，更多地参与Internet资源的组织。2002年5月Alexa放弃了自己的搜索引擎与Google合作。他们每天在网上搜集超过1,000GB的信息，然后进行整合发布。现在他们搜集的URL数量已经超过了Google。下图是他们自己给出的一个信息量比较图。纵轴为已有的URL地址的量，以十亿为单位。也就是说在量上，Alexa位居世界四大名搜索引擎第一位，已经超过了350亿。焦点在于，Alexa不仅给出这350多亿网址的链接，而且为其中的每一个网站进行了排名。可以说，Alexa是当前拥有URL数量最庞大，排名信息发布最详尽的网站。

Alexa的世界网站排名主要分两种：综合排名，可以叫做绝对排名，即特定的一个网站在所有350多亿网站中的名次。Alexa每三个月公布一次新的网站综合排名。此排名的依据是用户链接数（Users Reach）和页面浏览数（Page Views）三个月累积的几何平均值。分类排名一是按主题分类，比如新闻、娱乐、购物等，Alexa给出某个特定网站在同一类网站中的名次。Alexa将其收集到的网站共分了16个大类，每个类下又分为多个主题。

阿里妈妈的网站也有Alexa网站排名（
http://tool.alimama.com/site.php
）、中国站长网站（
http://alexa.chinaz.com/Index.asp
）也提供Alexa排名查询，还有很多网站也提供了它们的Alexa排名，这些排名的数据都是通过调用称为
Alexa Web Information Service (AWIS)
的服务，地址是
http://awis.amazonaws.com/doc/2005-07-11/AWSAlexa.wsdl
。
那么我们如何才能使用这些服务，以便创建我们的Alexa排名查询操作呢？
1. 首先你通过网站连接
http://www.amazon.com/gp/browse.html?node=12782661
，了解它是做什么的，收费如何（1000次约人民币1元左右）。

2. 注册一个帐号，绑定您的银行卡或者信用卡

3. 成功后会给你一个发送一个邮件，并可以登录查看你的专用公钥私钥字符串。



4. 根据这些你就可以访问它的AWIS访问了，如果你要了解进一步的开发的话，请参考这里的文档：
http://docs.amazonwebservices.com/AlexaWebInfoService/2005-07-11/

5. 如果你有疑问，可以在论坛中询问，当然都是老外的了。
http://developer.amazonwebservices.com/connect/forum.jspa?forumID=14

6.   AWIS有很多Response，如UrlInfoResponseResponse、CategoryBrowseResponseResponse、SitesLinkingInResponseResponse、TrafficHistoryResponseResponse、CategoryListingsResponseResponse、CrawlResponseResponse等，这些包含了各类排名等数据。

7. 我调用了AWIS做了一个小的测试应用，程序界面如下：



8. 最后贴一些代码辅助大家

获取Response的信息
#region
获取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