asp.net mvc中包含webapi时，token失效产生302的解决方案

public void ConfigureAuth(IAppBuilder app)
{
    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
        LoginPath = new PathString("/Account/Login"),
        Provider = new CookieAuthenticationProvider()
        {
            OnApplyRedirect = ctx =>
            {
                if (!IsApiRequest(ctx.Request))
                {
                    ctx.Response.Redirect(ctx.RedirectUri);
                }
            }
        }
    });

    app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
}

private static bool IsApiRequest(IOwinRequest request)
{
    string apiPath = VirtualPathUtility.ToAbsolute("~/api/");
    return request.Uri.LocalPath.StartsWith(apiPath);
}