.NET Core2.1获取自定义配置文件信息

实现

注:需要NuGet引入:Microsoft.Extensions.Options.ConfigurationExtensions

①我们再配置文件appsettings.json中 新增自定义API Json如下:

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

②然后我们定义一个静态类,再类中申明一个IConfigurationSection 类型变量

private static IConfigurationSection _appSection = null;

③写一个AppSetting静态方法获取到配置的Value项,代码如下:

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

④需要设置IConfigurationSection初始值,如下:

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

⑤然后写一个根据不同Json项读取出对应的值即可:

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

⑥有了以上几个步骤,基本上读取代码已经全部写完,剩下最后一个最重要的步骤,将要读取的Json文件配置到Startup.cs的Configure方法中,如下:

这样,我们就可以很轻松的获取到我们想要的配置项了,整段CS代码如下:

    /// <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);
        }
    }

最后 ,我们来跑一下演示效果如下:

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转载自www.cnblogs.com/qingfenglin/p/10883083.html