.NET Core2.1如何获取自定义配置文件信息详解

{
 "Logging": {
 "IncludeScopes": false,
 "LogLevel": {
  "Default": "Warning"
 }
 },
 "API": {
 "Url": "http://localhost:8080/",
 "getclub": "api/club"
 } 
}

private static IConfigurationSection _appSection = null;

  public static string AppSetting(string key)
  {
   string str = string.Empty;
   if (_appSection.GetSection(key) != null)
   {
    str = _appSection.GetSection(key).Value;
   }
   return str;
  }

  public static void SetAppSetting(IConfigurationSection section)
  {
   _appSection = section;
  }

 public static string GetSite(string apiName)
 {
  return AppSetting(apiName);
 }

 /// <summary>
 /// 配置信息读取模型
 /// </summary>
 public static class SiteConfig
 {
  private static IConfigurationSection _appSection = null;

  /// <summary>
  /// API域名地址
  /// </summary>
  public static string AppSetting(string key)
  {
   string str = string.Empty;
   if (_appSection.GetSection(key) != null)
   {
    str = _appSection.GetSection(key).Value;
   }
   return str;
  }

  public static void SetAppSetting(IConfigurationSection section)
  {
   _appSection = section;
  }

  public static string GetSite(string apiName)
  {
   return AppSetting(apiName);
  }
 }