如何使用Identity v2从Startup.Auth.cs公开/令牌端点

我正在与ASP合作。NET Identity 2并尝试启用令牌身份验证。从Identity 2示例中没有关于令牌身份验证的内容，所以我通过查看不同的帖子来设置自己。我跟随这篇文章的最后一个答案。NET Identity 2.0's DbContext中间件?

并能够设置每一个和一切，但现在当我试图达到这个终点在浏览器http://localhost:6722/token得到404错误。任何想法?

这是我的ApplicationOAuthProvider.cs

public class ApplicationOAuthProvider<TUserManager, TUser, TKey> : OAuthAuthorizationServerProvider
        where TUserManager : UserManager<TUser, TKey>
        where TUser : class, IUser<TKey>
        where TKey : IEquatable<TKey>
    {
        private readonly string _publicClientId;

        public ApplicationOAuthProvider(string publicClientId)
        {
            if (publicClientId == null)
            {
                throw new ArgumentNullException("publicClientId");
            }

            _publicClientId = publicClientId;
        }
        public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
        {
            var userManager = context.OwinContext.Get<TUserManager>(_publicClientId);
            TUser user = await userManager.FindAsync(context.UserName, context.Password);
            if (user == null)
            {
                context.SetError("invalid_grant", "The user name or password is incorrect.");
                return;
            }
            ClaimsIdentity oAuthIdentity = await userManager.CreateIdentityAsync(user,
            context.Options.AuthenticationType);
            ClaimsIdentity cookiesIdentity = await userManager.CreateIdentityAsync(user,
            CookieAuthenticationDefaults.AuthenticationType);
            AuthenticationProperties properties = CreateProperties(user.UserName);
            AuthenticationTicket ticket = new AuthenticationTicket(oAuthIdentity, properties);
            context.Validated(ticket);
            context.Request.Context.Authentication.SignIn(cookiesIdentity);
        }
        public override Task TokenEndpoint(OAuthTokenEndpointContext context)
        {
            foreach (KeyValuePair<string, string> property in context.Properties.Dictionary)
            {
                context.AdditionalResponseParameters.Add(property.Key, property.Value);
            }
            return Task.FromResult<object>(null);
        }
        public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
        {
            // Resource owner password credentials does not provide a client ID.
            if (context.ClientId == null)
            {
                context.Validated();
            }
            return Task.FromResult<object>(null);
        }
        public override Task ValidateClientRedirectUri(OAuthValidateClientRedirectUriContext context)
        {
            if (context.ClientId == _publicClientId)
            {
                Uri expectedRootUri = new Uri(context.Request.Uri, "/");
                if (expectedRootUri.AbsoluteUri == context.RedirectUri)
                {
                    context.Validated();
                }
            }
            return Task.FromResult<object>(null);
        }
        public static AuthenticationProperties CreateProperties(string userName)
        {
            IDictionary<string, string> data = new Dictionary<string, string>
            {
                {
                    "userName", userName
                }
            };
            return new AuthenticationProperties(data);
        }
    }

这是我的Startup.Oauth.cs

 public partial class Startup
    {
        static Startup()
        {
            PublicClientId = "self";
            OAuthOptions = new OAuthAuthorizationServerOptions
            {
                TokenEndpointPath = new PathString("/Token"),
                Provider = new ApplicationOAuthProvider<ApplicationUserManager, User, int>(PublicClientId),
                AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
                AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
                AllowInsecureHttp = false
            };
        }
        public static OAuthAuthorizationServerOptions OAuthOptions { get; private set; }
        public static string PublicClientId { get; private set; }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Configure the db context, user manager and role manager to use a single instance per request
            app.CreatePerOwinContext(ApplicationDb.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
            // Enable the application to use a cookie to store information for the signed in user
            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
            // Configure the sign in cookie
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                Provider = new CookieAuthenticationProvider
                {
                    // Enables the application to validate the security stamp when the user logs in.
                    // This is a security feature which is used when you change a password or add an external login to your account.  
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, User, int>(
                        validateInterval: TimeSpan.FromMinutes(30),
                        regenerateIdentityCallback: (manager, user) => user.GenerateUserIdentityAsync(manager),
                        getUserIdCallback: (claim) => int.Parse(claim.GetUserId()))
                }
            });

            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
            // Enable the application to use bearer tokens to authenticate users
            app.UseOAuthBearerTokens(OAuthOptions);
            // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process.
            app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));
            // Enables the application to remember the second login verification factor such as phone or email.
            // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from.
            // This is similar to the RememberMe option when you log in.
            app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);

            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");
            //app.UseTwitterAuthentication(
            //   consumerKey: "",
            //   consumerSecret: "");
            //app.UseFacebookAuthentication(
            //   appId: "",
            //   appSecret: "");
            //app.UseGoogleAuthentication();
        }
    }

和我试图访问/令牌结束点直接从浏览器，它抛出404错误。