尝试对 ASP.NET Core 3.1 使用多个身份验证方案时出现异常

Question

我正在尝试使用 ASP.NET Core 3.1 添加多个身份验证方案，并在尝试向服务器发送不记名令牌时遇到此问题：

System.InvalidOperationException: No authenticationScheme was specified, and there was no DefaultChallengeScheme found. The default schemes can be set using either AddAuthentication(string defaultScheme) or AddAuthentication(Action<AuthenticationOptions> configureOptions).
   at Microsoft.AspNetCore.Authentication.AuthenticationService.ChallengeAsync(HttpContext context, String scheme, AuthenticationProperties properties)
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at NWebsec.AspNetCore.Middleware.Middleware.CspMiddleware.Invoke(HttpContext context)
   at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
   at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
   at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)
   at NWebsec.AspNetCore.Middleware.Middleware.MiddlewareBase.Invoke(HttpContext context)

以下是相关代码：

            services.AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
            })
            .AddJwtBearer("Custom", options =>
            {
                options.SaveToken = true;
                options.RequireHttpsMetadata = true;
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = key,
                    ValidateAudience = false,
                    ValidateIssuer = false
                };
            })
            .AddJwtBearer("Keycloak", options =>
            {
                options.Authority = "http://localhost:8080/auth/realms/test";
                options.SaveToken = true;
                options.RequireHttpsMetadata = false;
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = key,
                    ValidateAudience = false,
                    ValidateIssuer = false
                };
            });

            services.AddAuthorization(options =>
            {
                var authorizationPolicy = new AuthorizationPolicyBuilder()
                  .AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme, "Custom", "Keycloak")
                  .RequireAuthenticatedUser().Build();
                options.AddPolicy("Bearer", authorizationPolicy);
            });

任何人都能够看到我在这里做错了什么？ 如果我只使用一个，这两种方案都可以单独工作。

Answer 1

我找到了解决方案。

我需要添加

    [Authorize(AuthenticationSchemes = "Custom, Keycloak")]

在我的基地 controller。