{

"WeChatPay": {

    "WeChatApp_ID": "wx9999998999",

    "WeChatMCH_ID": "1880000000",

    "WeChatApp_secret": "123ggg456ddfd355dsa"

  }

}

 public void ConfigureServices(IServiceCollection services)

        {

            //微信支付配置文件 配置Services

            services.Configure<WeChatPayOptions>(Configuration.GetSection("WeChatPay"));

            //////////////////////////////////////////////////////////////////////////////////

        }

public class HomeController : Controller

{

     //把设置注入进相应的Controller

   private WeChatPayOptions WeChatPayConfigSettings { get; set; }

  

 public HomeController(IOptions<WeChatPayOptions> settings)

 {

  WeChatPayConfigSettings = settings.Value;

 }

      [HttpPost]

       public IActionResult Test([FromBody]JObject postVal)

        {

            string appid = WeChatPayConfigSettings.WeChatApp_ID;

            string mchid = WeChatPayConfigSettings.WeChatMCH_ID;

            string appkey = WeChatPayConfigSettings.WeChatApp_secret;

            return AsResult.Success(appkey+ appid+mchid );

        }

public class WeChatPayOptions

    {

        public string WeChatApp_ID { get; set; }

        public string WeChatMCH_ID { get; set; }

        public string Gatewayurl { get; set; }

        public string WeChatApp_secret { get; set; }

    }