.net core读取json配置文件

一、新建.net core控制台程序

二、通过Nuget引入 Microsoft.Extensions.Configuration和microsoft.extensions.configuration.json

三、引入配置文件appsettings.Debug.json

{

  "AppConfig": {

    "DbConnection": "Server=;port=;database=",

    "EnableTrace": false,

    "IpWhiteList": [

      "127.0.0.1"

    ],

    "Port": ,

    "ServiceName": "myapi"

  },

  "Auth": {

    "Users": [ "hanmeimei", "Lucy", "lilei" ]

  }

}

四、新建类JsonConfigTest

public class JsonConfigTest

    {

        public IConfiguration Configuration { get; }

        public static void Run()

        {

            var Configuration = StartAppsettings();

            //get DbConn

            var connectionStr = Configuration.GetSection("AppConfig")["DbConnection"];//第一种方法

            Console.WriteLine(connectionStr);

            connectionStr = Configuration["AppConfig:DbConnection"];//第二种方法

            Console.WriteLine(connectionStr);

            //get user

            IEnumerable<string> users = Configuration.GetSection("Auth:Users").GetChildren().Select(x => x.Value);

            foreach (var user in users)

            {

                Console.WriteLine(user);

            }

            Console.ReadKey();

        }

        public static IConfiguration StartAppsettings()

        {

            bool isOptional = true;

            var builder = new ConfigurationBuilder()

                .AddJsonFile($"appsettings.debug.json", isOptional);

            var config = builder.Build();

            return config;

        }

    }

五、执行程序

    class Program

    {

        static void Main(string[] args)

        {

            JsonConfigTest.Run();

        }

    }

六、输出：

六：源码

https://download.csdn.net/download/yang33125/11140696

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