.NET Web API +会话超时 [英] .NET Web API + Session Timeout

问题描述

我正在使用Web api控制器创建Web服务.我希望能够创建一个会话并检查该会话的状态.我有以下内容:

I am creating a web service with web api controller. I want to be able to create a session and check the status of the session. I have the following:

控制器:

public string Get(string user, string pass)
{
        bool loginValue = false;
        loginValue = UserNamepassword(user, pass);

        if (loginValue == true)
        {
            HttpContext.Current.Session.Add("Username", user);                
            //session["Username"] = user; 
            //session.Add("Username", user);
            if ((string)HttpContext.Current.Session["Username"] != null)
            {
                HttpContext.Current.Session.Add("Time", DateTime.Now);

                return "Username: " + (string)HttpContext.Current.Session["Time"] + (string)HttpContext.Current.Session["Username"];
            }
            return "Logged in but session is not availabe for " + (string)HttpContext.Current.Session["Username"];
        }            
        else
            return "Login failed for " + user;
}

WebConfig

WebConfig

public static void RegisterRoutes(RouteCollection routes)
    {
        var route = routes.MapHttpRoute(
            name: "SessionApi",
            routeTemplate: "api/{controller}/{user}/{pass}",
            defaults: new { user = RouteParameter.Optional, pass = RouteParameter.Optional }
        );
        route.RouteHandler = new MyHttpControllerRouteHandler();
    }
    public class MyHttpControllerHandler: HttpControllerHandler, IRequiresSessionState
    {
        public MyHttpControllerHandler(RouteData routeData): base(routeData){ }
    }
    public class MyHttpControllerRouteHandler: HttpControllerRouteHandler
    {
        protected override IHttpHandler GetHttpHandler(RequestContext requestContext)
        {
            return new MyHttpControllerHandler(requestContext.RouteData);
        }
    }

Global.asax.cs

Global.asax.cs

WebApiConfig.RegisterRoutes(RouteTable.Routes);

运行此代码时，我会继续在会话中获取空引用.

When I run this code I keep on getting null reference in the session.

HttpContext.Current.Session.Add("Username", user);                
//session["Username"] = user; 
//session.Add("Username", user);

有人知道为什么我不能将会话变量设置为任何东西吗?不管我使用的哪种方法都不起作用，这并不重要.该代码取自另一篇文章.

Does anyone knows why I cannot set the session variable to anything. It does not matter which method I use non of the three are working. The code was taking from another post.

推荐答案

这是Web API设计的，因为它是为创建静态Web服务而设计的.为了使服务真正宁静，对于任何具有给定动词的请求，/myserver/somendpoint/5 都应具有相同的结果.

This is by design in Web API because it is designed for creating restful web services. To be truly restful a service should not have any kind of state, i.e. /myserver/somendpoint/5 should have the same result for any request with a given verb.

但是，如果不合适，您可以通过在global.asax中添加以下内容来启用Web API中的会话.

However if that doesn't suit you, you can enable session in web API by adding following to global.asax.

protected void Application_PostAuthorizeRequest() 
{
    System.Web.HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required);
}

这篇关于.NET Web API +会话超时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！