c#在WebAPI使用Session的方法

  public class SessionRouteHandler : HttpControllerHandler, IRequiresSessionState
  {
    public SessionRouteHandler(RouteData routeData) :  (routeData)
    {

    }
  }

  public class SessionControllerRouteHandler : HttpControllerRouteHandler
  {
    protected override IHttpHandler GetHttpHandler(RequestContext requestContext)
    {

      return new SessionRouteHandler(requestContext.RouteData);

    }

  }

public static void Register(HttpConfiguration config)
{
  RouteTable.Routes.MapHttpRoute(

  name: "DefaultApi",

  routeTemplate: "api/{controller}/{id}",

  defaults: new { id = RouteParameter.Optional }

  ).RouteHandler=new SessionControllerRouteHandler();
}

public override void Init()
    {
      PostAuthenticateRequest += MvcApplication_PostAuthenticateRequest;
       .Init();
    }

    void MvcApplication_PostAuthenticateRequest(  sender, EventArgs e)
    {
      HttpContext.Current.SetSessionStateBehavior(
        SessionStateBehavior.Required);
    }

    public override void Init()
    {
      this.PostAuthenticateRequest += (sender, e) => HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
       .Init();
    }