如何在MVC中检查用户是否已通过身份验证

Question

我已经做了自定义认证系统通过遵循这个example，它是工作的。我的代码如下所示。我想知道我应该如何控制用户是否在其他操作中进行了身份验证，比如用户是否转到/Profile/Index？

我试过HttpContext.User和User.Identity，但不起作用。

[HttpPost]
public ActionResult Login(string username, string password)
{
    if (new UserManager().IsValid(username, password))
    {
        var ident = new ClaimsIdentity(
          new[] {
      new Claim(ClaimTypes.NameIdentifier, username),
      new Claim("http://schemas.microsoft.com/accesscontrolservice/2010/07/claims/identityprovider", "ASP.NET Identity", "http://www.w3.org/2001/XMLSchema#string"),
      new Claim(ClaimTypes.Name,username)
          },
          DefaultAuthenticationTypes.ApplicationCookie);

        HttpContext.GetOwinContext().Authentication.SignIn(
           new AuthenticationProperties { IsPersistent = false }, ident);
        return RedirectToAction("MyAction"); // auth succeed 
    }
    ModelState.AddModelError("", "invalid username or password");
    return View();
}

这是我的Global.asax

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);
}

Answer 1

您没有在您的Owin管道中设置身份验证。最简单的方法是添加一个如下所示的文件。将其命名为IdentityConfig.cs，并将其放在App_Start文件夹中：

using Microsoft.AspNet.Identity;
using Microsoft.Owin;
using Microsoft.Owin.Security.Cookies;
using Owin;

//This line tells Owin which method to call
[assembly: OwinStartup(typeof(TokenBasedAuthenticationSample.IdentityConfig))]
namespace TokenBasedAuthenticationSample
{
    public class IdentityConfig
    {
        public void Configuration(IAppBuilder app)
        {
            //Here we add cookie authentication middleware to the pipeline 
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/login"),
            });
        }
    }
}