使用MongoDB存储访问者信息

网站的访问者信息的存储一般都是海量的，通常使用关系数据库，现在NoSQL运动火热，满足这样的需求使用NoSQL数据库会更好，网站访问者信息主要是两个功能：
1、记录下网站的访问者信息
2、查询访问者信息和做相关的数据分析
本文采用MongoDB来记录访问者的信息的示例：
在asp.net中记录访问者信息的方法可以通过一个HttpHandler，在页面上放一个1像素的图片来请求这个HttpHandler，把他放到MasterPage页面就可以了。
下面给出ashx的代码

1: public class a : IHttpHandler

2: {

3:     public void ProcessRequest(HttpContext ctx)

4:     {

5:         HttpBrowserCapabilities bc = ctx.Request.Browser;

6:         Stat stat = new Stat();

7:         stat._id = Guid.NewGuid();

8:         stat.Browser = bc.Browser;

9:         stat.Type = bc.Type;

10:         stat.Version = bc.Version;

11:         stat.Platform = bc.Platform;

12:         stat.UrlReferrer = ctx.Request.UrlReferrer.ToString();

13:         stat.UserHostAddress = ctx.Request.UserHostAddress;

14:         stat.HttpMethod = ctx.Request.HttpMethod;

15:         stat.IsAuthenticated = ctx.Request.IsAuthenticated;

16:         stat.LogDateTime = DateTime.Now.ToLocalTime();

17: 

18:         WebClient wc=new WebClient();

19:         try

20:         {

21:             string s =

22:                 wc.DownloadString("http://ipinfodb.com/ip_query.php?ip=" + stat.UserHostAddress + "&output=xml");

23:             XmlDocument doc = new XmlDocument();

24:             doc.LoadXml(s);

25:             stat.Country = doc.DocumentElement.SelectNodes("CountryCode")[0].InnerText;

26:             stat.State = doc.DocumentElement.SelectNodes("RegionName")[0].InnerText;

27: 

28:             stat.City = doc.DocumentElement.SelectNodes("City")[0].InnerText;

29:             stat.Latitude = doc.DocumentElement.SelectNodes("Latitude")[0].InnerText;

30:             stat.Longitude = doc.DocumentElement.SelectNodes("Longitude")[0].InnerText;

31:

32:         }

33:         catch(Exception ex)

34:         {

35:             System.Diagnostics.Debug.WriteLine(ex.Message+ ex.StackTrace );

36:         }

37:         finally

38:         {

39:             wc.Dispose();

40:         }

41:         using (Mongo mongo = Mongo.Create(Helper.ConnectionString()  ))

42:         {

43:             MongoCollection<Stat> coll = (MongoCollection<Stat>)mongo.GetCollection<Stat>();

44:             coll.Save(stat);

45:         }

46:

47:         string sFileName = String.Empty;

48:         string sPath = ctx.Server.MapPath(".");

49:         try

50:         {

51:             sFileName = ctx.Request["name"].ToString().Trim();

52:             if (sFileName.Length < 5) { return; }  // must be at least "1.gif" (5 chars)

53:             // serve the image that was requested:

54:             ctx.Response.WriteFile(sPath + @"/" +  sFileName);

55:         }

56:         catch (Exception e)

57:         {

58: 

59:             ctx.Response.Write(e.Message);

60:         }

61:     }

62:     public bool IsReusable { get { return true; } }

63: }

上面代码使用到了HttpBrowserCapabilities，这里可以得到客户端的浏览器信息。还有客户端ip的来源使用到了ipinfodb.com这个服务，IPinfoDB网站非常的慷慨，慷慨到让人惊讶的程度，除了提供给你XML API和JSON API调用外，还提供了实现这些API的source code和所有的IP数据库，也就是说你只要下载这份code和database你也可以架设一个和IPinfoDB一样的网站，一样能够提供API服务，不过国外做的IP数据库对国内来说肯定不是很全很准，不过先将就着用吧。

访问访问者信息的MongoDB的信息记录：

1: [Serializable]

2: public class Stat

3: {

4: [MongoIdentifier]

5: public Guid _id {get;set;}

6: public string Type {get;set;}

7: public string Browser {get;set;}

8: public string Version {get;set;}

9: public string Platform {get;set;}

10: public string UrlReferrer {get;set;}

11: public string UserHostAddress  {get;set;}

12: public bool IsAuthenticated {get;set;}

13: public string HttpMethod  {get;set;}

14: public DateTime LogDateTime { get; set; }

15: public string City { get; set; }

16: public string State { get; set;}

17: public string Country { get; set; }

18: public string Latitude { get; set; }

19: public string Longitude { get; set; }

20: }

然后利用MongoDB的C# NORm驱动记录到MongoDB。

相关文章：

http://www.cnblogs.com/shanyou/archive/2010/06/04/1751734.html

http://www.eggheadcafe.com/tutorials/aspnet/63de8012-127a-4478-8725-3e1c27969596/nosql-mongodb-install-lotus-notes-and-couchdb.aspx


http://www.eggheadcafe.com/tutorials/aspnet/51d3ae19-d6f9-4807-ac0a-0baab2964b03/mongodb-install-as-service-and-use-net-drivers.aspx


http://www.eggheadcafe.com/tutorials/aspnet/93206c89-09c9-40fc-9296-7d74bb7996ad/a-mongodb-cache-utility.aspx

http://www.eggheadcafe.com/tutorials/aspnet/3a73c6de-82a1-4690-a7aa-d0eda58203f7/store-aspnet-site-visitor-stats-in-mongodb.aspx

http://www.eggheadcafe.com/tutorials/aspnet/27f836b7-2c9e-4942-9712-1c7b901cadcc/aspnet-providerless-custom-forms-authentication-roles-and-profile-with-mongodb.aspx