.net core 讀取appsettings 的配置

{
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": {
      "Default": "Warning"
    }
  },
  "ConnectionStrings": {
    "CxyOrder": "Server=***;Database=***;User ID=***;Password=***;Trusted_Connection=False;"
  },
  "Appsettings": {
    "SystemName": "PDF .NET CORE",
    "Date": "2017-07-23",
    "Author": "PDF"
  },
  "ServiceUrl": "https://www.baidu.com/getnews"
}

 

調用的方法 appsettings.json

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Configuration.Json;

namespace NetCoreOrder.Common
{
    /// <summary>
    /// 讀取配置文件
    /// </summary>
    public class AppConfigurtaionServices
    {
        public static IConfiguration Configuration { get; set; }
        static AppConfigurtaionServices()
        {
            //ReloadOnChange = true 當appsettings.json被修改時重新加載            
            Configuration = new ConfigurationBuilder()
            　　.Add(new JsonConfigurationSource { Path = "appsettings.json", ReloadOnChange = true })
            　　.Build();            
        }
    }
}

 

　　

讀取一級配置節點配置

AppConfigurtaionServices.Configuration["ServiceUrl"];
//得到 https://www.baidu.com/getnews

 

讀取二級子節點配置

AppConfigurtaionServices.Configuration["Appsettings:SystemName"];
//得到 PDF .NET CORE
AppConfigurtaionServices.Configuration["Appsettings:Author"];
//得到 PDF

 

最后你執行的時候八成會遇到這個錯誤

The type initializer for '***' threw an exception. 

這時候你需要

右鍵appsettings.json>>>屬性》》》輸出到目錄改為始終復制

 

 不復制的話讀不到這個文件

 

僅僅為了做個筆記

轉自：

https://www.cnblogs.com/pudefu/p/7580722.html

https://www.cnblogs.com/likui-bookHouse/p/11281074.html

 

還有其他的寫法：

https://blog.csdn.net/weixin_34309435/article/details/86028477