[网络协议]weiApi部分配置解决跨域，session和http put方面使用问题

1.App_Start

1.1 RouteConfig

   public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );
        }
    }

1.2 WebApiConfig 里面包含了跨域配置

    public class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API 配置和服务

            // Web API 路由
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );

            //启用跨域　　
            config.EnableCors();
        }
    }

?接口端跨域配置

    [EnableCors("*", "*", "*")]
    public class testController : ApiController
    {
    
   }

2.如果需要使用HttpContext.Current.Session ，需要在Global.asax配置以下代码

        /// <summary>
        /// 在MVC的WebApi中默认是没有开启Session会话支持的
        /// 需要在Global中重写Init方法来指定会话需要支持的类型
        /// </summary>
        public override void Init()
        {
            PostAuthenticateRequest += MvcApplication_PostAuthenticateRequest;
            base.Init();
        }

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

?3.关于解决webApi调用Http?Put?和Http Delete,需要在web.config中<system.webServer></system.webServer>，添加以下代码

    <handlers>
      <remove name="WebDAV" />
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <remove name="OPTIONSVerbHandler" />
      <remove name="TRACEVerbHandler" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" 
       type="System.Web.Handlers.TransferRequestHandler" 
       preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
    <modules>
        <remove name="WebDAVModule" />
    </modules>