JwtBearer：没有登录身份验证处理程序

Question

玩得开心！这是一个简单的asp.net core 2.0应用程序，我将在其中测试自定义身份和Web令牌授权。 JwtBearer的配置如下所示：

    public void ConfigureServices(IServiceCollection services)
    {
        services
            .AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
            })
            .AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, options =>
            {
                options.RequireHttpsMetadata = false;
                options.SaveToken = true;
                options.ClaimsIssuer = AppConfig.Jwt.Issuer;
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuer = true,
                    ValidateAudience = true,
                    ValidateLifetime = true,
                    ValidateIssuerSigningKey = true,
                    ValidIssuer = AppConfig.Jwt.Issuer,
                    ValidAudience = AppConfig.Jwt.Issuer,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(AppConfig.Jwt.SecretKey))
                };
            });
        services.AddMvc();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        app.UseSwagger();
        app.UseAuthentication();
        app.UseMvc();
    }
}

当我尝试致电_signInManager.PasswordSignInAsync()时，通常会收到错误消息：

谢谢！