如何在 web api Authentication Failed 场景中获取详细错误而不是 "Message": "Authorization has been denied for this request."？

Question

我从 VS 模板创建了一个 Web api，其中包含一个装饰有 [Authorize] 的值控制器。我添加了 Owin Startup 如下：

[assembly: OwinStartup(typeof(WebAPIDotNet.Startup))]
namespace WebAPIDotNet
{
    public class Startup
    {
        private static string clientId = "xxxxxxxxx"; // my actual client id from azure ad.

        public void Configuration(IAppBuilder app)
        {


            app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions
            {
                AccessTokenFormat = new JwtFormat(
                    new TokenValidationParameters
                    {
                        // Check if the audience is intended to be this application
                        ValidAudiences = new[] { clientId, $"api://{clientId}" },

                        // Change below to 'true' if you want this Web API to accept tokens issued to one Azure AD tenant only (single-tenant)
                        // Note that this is a simplification for the quickstart here. You should validate the issuer. For details, 
                        // see https://github.com/Azure-Samples/active-directory-dotnet-native-aspnetcore
                        ValidateIssuer = false,

                    }

                    //new OpenIdConnectSecurityTokenProvider("https://login.microsoftonline.com/common/v2.0/.well-known/openid-configuration")
                    ),
                AuthenticationMode = Microsoft.Owin.Security.AuthenticationMode.Active,
// Below Provider is just so that I can capture detailed errors while debugging, but no success
                    Provider = new OAuthBearerAuthenticationProvider
                    {
                        OnRequestToken = Onrequesttoken,
                        OnApplyChallenge = applyuingChallenge,
                        OnValidateIdentity = validatingidentiity

                    },
                });

            }

            private Task validatingidentiity(OAuthValidateIdentityContext arg)
            {
                return Task.FromResult(0);
            }

            private Task applyuingChallenge(OAuthChallengeContext arg)
            {
                return Task.FromResult(0);
            }

            private Task Onrequesttoken(OAuthRequestTokenContext arg)
            {
                return Task.FromResult(0);
            }
        }
    }

我已经有一个访问令牌，并且我已经验证它有正确的受众等。但是使用 Postman 发出 GET 请求总是给我消息 - "Message": "Authorization has been denied for this request."

当我调试时，我可以看到令牌是授权的一部分，有什么办法可以 log/see 实际错误而不是 "Message": "Authorization has been denied for this request." ?

邮递员要求：

Answer 1

为了防止其他人遇到这个问题，我在 Owin Katana 文档中找到了答案。本质上，在您的 web.config 中放置在配置下方将在输出 window 中启用包含详细信息的日志，并且我能够看到授权失败的根本原因，因为我使用的是 Owin 身份验证中间件。

<system.diagnostics>
    <switches>
      <add name="Microsoft.Owin" value="Verbose" />
    </switches>
  </system.diagnostics>

如何在 web api Authentication Failed 场景中获取详细错误而不是 "Message": "Authorization has been denied for this request."？

How to get the detailed error in web api Authentication Failed scenario instead of "Message": "Authorization has been denied for this request."?

asp.net-web-api2

bearer-token

webapi