从json文件设置到jwt的数据注入

我正在尝试将json文件中的jwt设置插入startup.configureServices:

应用设置.json

..,

  "jwt": {
    "key": "some_password123TEST!",
    "issuer": "http: //localhost:Port",
    "expiryMinutes": 60
  }

JWTSETIN

public class JwtSettings
{
  public string Key { get; set; }
  public string Issuer { get; set; }
  public int ExpiryMinutes { get; set; }
}

创业公司

public void ConfigureServices(IServiceCollection services)
{
 ...
 services.Configure<JwtSettings>(Configuration.GetSection("jwt"));

  services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(o =>
  {
            o.TokenValidationParameters = new TokenValidationParameters
            {
               // ValidateIssuer = true,
               ValidateIssuer = JwtSettings.Issuer ???
            ......
  });
}

现在如何从jwtsettings.issuer获取我的设置?

我试图添加到也将此添加到 Configure 方法:

app.ApplicationServices.GetService<JwtSettings>();

或

var test = app.ApplicationServices.GetService<JwtSettings>();
app.UseAuthentication(test);

但不是这样的。