Swagger（C＃）不添加授权标题

Question

我试图让Swagger与客户凭证流程一起工作。

builder.Services.AddSwaggerGen(c =>
{
    c.SchemaFilter<SchemaFilter>();

    c.SwaggerDoc("v1", new OpenApiInfo { Title = "The API", Version = "v1" });

    var basePath = System.AppContext.BaseDirectory;
    string docFileName = Directory.GetFiles(basePath, "*.xml").First();
    var docFile = Path.Combine(basePath, docFileName);

    if (File.Exists(docFile))
    {
        c.IncludeXmlComments(docFile);
    }

    // Makes the UI appear and be able to get a token.
    c.AddSecurityDefinition("oauth2", new OpenApiSecurityScheme()
    {
        Description = "Bearer token",
        In = ParameterLocation.Header,
        Name = "Authorization",
        Scheme = "Bearer",
        BearerFormat = "JWT",
        Type = SecuritySchemeType.OAuth2,
        Flows = new OpenApiOAuthFlows()
        {
            ClientCredentials = new OpenApiOAuthFlow()
            {
                AuthorizationUrl = new Uri("http://www.localhost:5000/connect/authorize"),
                TokenUrl = new Uri("http://www.localhost:5000/connect/token"),
                Scopes = new Dictionary<string, string>() { { "thescope", "The scope" } }
            }
        }
    });

    // Docs claim this is necessary; doesn't say what it does in addition to the above.
    c.AddSecurityRequirement(new OpenApiSecurityRequirement()
    {
        {
            new OpenApiSecurityScheme
            {
                Reference = new OpenApiReference
                {
                    Type = ReferenceType.SecurityScheme,
                    Id = Microsoft.AspNetCore.Authentication.JwtBearer.JwtBearerDefaults.AuthenticationScheme
                },
                Scheme = "Bearer", // https://www.iana.org/assignments/http-authschemes/http-authschemes.xhtml
                In = ParameterLocation.Header
            },

            new List<string>()
        }
    });

在Swagger网页上出现 授权按钮，我可以使用client_id和client_secret获得令牌。

但是，Swagger不使用令牌。没有授权将标题添加到任何请求中。为什么？