需要帮助在不进行硬编码的情况下从 appSettings 中检索它

Question

我需要一些帮助来使用字典从 appSettings 中检索它，而无需对值进行硬编码。

   "HMAC": {
      "MLC": {
        "Server": {
           "PE": {
             "ApiKey": null,
             "SecretKey": null
             },
           "DNB": {
             "ApiKey": null,
             "SecretKey": null
           }
          },
        "Clients": {
             "Billing": {
                  "ApiKey": null,
                  "SecretKey": null
                 },
             "Finance": {
                  "ApiKey": null,
                  "SecretKey": null
             }
          }
      }
   },

目前这就是我在 appSettings 中获取 apiKeys 的方式。但它没有 MLC 层。我不知道如何添加其他层来获取服务器或客户端密钥。

    public class HMAC
    {

        public IDictionary<string, HMACSettings> Server { get; set; } = null!;
        public IDictionary<string, HMACSettings> Clients { get; set; } = null!;
        public HMACSettings? GetServer(string KeyName)
        {
            return GetValue(this.Server, KeyName);
        }
        public HMACSettings? GetClients(string KeyName)
        {
            return GetValue(this.Clients, KeyName);
        }
        public HMACSettings? GetValue(IDictionary<string, HMACSettings> HmacCollection, string KeyName)
        {
            if (HmacCollection?.Count() > 0 && HmacCollection.ContainsKey(KeyName))
            {
                return HmacCollection[KeyName];
            }
            return null;
        }
    }


    public class HMACSettings
    {
        public string ApiKey { get; set; } = string.Empty;
        public string SecretKey { get; set; } = string.Empty;
    }

我正在使用 .Net Core，所以我已经实例化了 HMac，当我需要密钥时，我只是调用

    this.hmacSettings = hmac.Value?.GetServer(mlcKey);

如何在词典中添加另一层MLC