WebApi OAuth UseOAuthBearerAuthentication 给出“序列包含多个元素"；错误

问题描述

我通过以下几行配置了我的 WebApi OAuth 2.0:

I configured my WebApi OAuth 2.0 by these lines:

    app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions
    {
        Provider = new OAuthBearerAuthenticationProvider(),
    });

    app.UseOAuthBearerTokens(OAuthOptions);

但它在每次请求时都会给我以下错误:

But it gives me the following error at each request :

Message : An error has occurred.
ExceptionMessage : Sequence contains more than one element
ExceptionType : System.InvalidOperationException
StackTrace :    at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
   at Microsoft.Owin.Security.AuthenticationManager.d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at System.Web.Http.HostAuthenticationFilter.d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.AuthenticationFilterResult.d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at System.Web.Http.Dispatcher.HttpControllerDispatcher.d__1.MoveNext()

我的OAuthOptions 是:

    OAuthOptions = new OAuthAuthorizationServerOptions
    {
        TokenEndpointPath = new PathString("/Token"),
        Provider = new ApplicationOAuthProvider(PublicClientId, UserManagerFactory),
        AuthorizeEndpointPath = new PathString("/Account/ExternalLogin"),
        AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
        AllowInsecureHttp = true,
    };
}

如果我评论 UseOAuthBearerAuthentication 一切正常！我还没有自定义OAuthBearerAuthenticationProvider，直接使用了，但是为什么会报错?

If I comment UseOAuthBearerAuthentication everything is ok! I didn't customize OAuthBearerAuthenticationProvider yet and I use it directly but why does it give me error?

推荐答案

应该是个bug！使用

app.UseOAuthAuthorizationServer(OAuthOptions);

代替

app.UseOAuthBearerTokens(OAuthOptions);

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