webApi——啓用 session

默認webapi 不開啓 session 會話支持

所以需要修改配置，手動在 Global 開啓 session 支持
1.重寫 init() 方法
2.開啓session支持

Global.asax

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace WebApiCORS
{
    public class WebApiApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            GlobalConfiguration.Configure(WebApiConfig.Register);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
        }

        public override void Init()
        {
            //註冊事件
            this.AuthenticateRequest += WebApiApplication_AuthenticateRequest;
            base.Init();
        }

        //開啓session支持
        void WebApiApplication_AuthenticateRequest(object sender, EventArgs e)
        {
            //啓用 webapi 支持session 會話
            HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required);
        }
    }
}