Build a backend management system for ASP. Mvc4+ef5+easyui+unity2.x Injection (40)-Accurate online Demographics-"Filter +cache"

Original: Building a back-end management system for ASP. Mvc4+ef5+easyui+unity2.x Injection (40)-Accurate online headcount statistics-"filter +cache"

Series Catalogue

The last discussion did not have any results, I browsed a lot of articles and individual system reference! Decide to do it with the cache, which may be a bit hard to accept but it works very well with the MVC filter!

Because of the previous filter, we used the OnActionExecuting method to determine the permissions.

Now, after the method is executed, we use onactionexecuted to monitor the user's actions and refresh the user's online list.

First download the http://files.cnblogs.com/ymnets/OnlineUser.7z class library, the code is clear, and annotated

This class library includes the operation of the online user list of additions and deletions, you can download the next look and put in

Can open research its code!

New Class Onlinehttpmodule in App.admin

usingApp.Core.OnlineStat;usingApp.Models.Sys;usingSystem;usingSystem.Collections.Generic;usingSystem.Globalization;usingSystem.Linq;usingSystem.Net.Http;usingSystem.Text;usingSystem.Threading;usingSystem.Threading.Tasks;usingsystem.web;usingSystem.Web.Routing;namespaceapp.admin{ Public classOnlinehttpmodule {//Cache Key         Public Static ReadOnly stringG_onlineuserrecordercachekey ="__onlineuserrecorder"; #regionIHttpHandler Members Public Static voidProcessRequest () {//Get online User loggerOnlineuserrecorder recorder = Httpcontext.current.cache[g_onlineuserrecordercachekey] asOnlineuserrecorder; if(Recorder = =NULL)            {                //Create a logger factoryOnlineuserrecorderfactory factory =Newonlineuserrecorderfactory (); //Set user timeout timeFactory. Usertimeoutminute =2; //Statistical time intervalFactory. Statisticeventinterval = -; //Creating LoggersRecorder =Factory.                Create (); //Cache RecorderHttpContext.Current.Cache.Insert (G_onlineuserrecordercachekey, Recorder); } onlineuser User=NewOnlineuser (); Accountmodel Model= (Accountmodel) httpcontext.current.session[" Account"];//Note that the session name is the same as the name of the login saved//User nameUser. UserName =convert.tostring (model.            ID); //SessionIDUser. SessionID =HttpContext.Current.Session.SessionID; //IP AddressUser. ClientIP =HttpContext.Current.Request.UserHostAddress; //Last activity TimeUser. Activetime =DateTime.Now; //Last Request AddressUser. Requesturl =HttpContext.Current.Request.RawUrl; //Save user InformationRecorder.        Persist (user); }        #endregion    }}

This class is called when the user logs on and is called in the filter, and the calling code

Filter:

 public  class   Supportfilterattribute:actionfilterattribute { public  string  actionname {get ; set          private  string   area;  //  update the online user list after the method is executed  public  override  void   onactionexecuted (ActionExecutedContext filtercontext) {onlinehttpmodule.processrequest (); }......................................

Settings at login time:

New Accountmodel ();             = user. Id;             = user. Truename;             string. IsNullOrEmpty (user. Photo)? " /images/photo.jpg " : User. Photo;            session["account") = account ;             // Online User Statistics            Onlinehttpmodule.processrequest ();

The call is very simple and the implementation is very simple!

Now look if you get the online list:

            // bind online user list            ilist<onlineuser> userlist = Recorder. Getuserlist ();             foreach (var in userlist)            {                sb. AppendFormat (onlineuser.username+"<br>");            }

Onlinehttpmodule can freely set the statistics interval (in seconds), and the user times out time, which is very accurate statistics of the user 2 minutes without action is considered offline!

I used IE and chome to test 2 users, but also close the browser test users, accuracy is good! Abandoned an inaccurate primitive old method.

Build a backend management system for ASP. Mvc4+ef5+easyui+unity2.x Injection (40)-Accurate online Demographics-"Filter +cache"