.NET Core 中读取appsettings.json配置文件的方法

appsettings.json配置文件结构如下：

{

"WeChatPay": {
    "WeChatApp_ID": "wx9999998999",
    "WeChatMCH_ID": "1880000000",
    "WeChatApp_secret": "123ggg456ddfd355dsa"
  }
}

Startup.cs 配置文件 Services

 public void ConfigureServices(IServiceCollection services)
        {
            //微信支付配置文件 配置Services
            services.Configure<WeChatPayOptions>(Configuration.GetSection("WeChatPay"));
            //////////////////////////////////////////////////////////////////////////////////
        }

然后把设置注入进相应的Controller后就可以使用了

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 );
        }

models 中的实体类结构：

WeChatPayOptions

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; }

    }