.Net Core Configuration用法

//在应用程序的任何地方注入 IConfiguration 来访问配置数据。ASP.NET Core 默认会加载 appsettings.json 文件

IConfiguration _configuration = builder.Configuration;
string connectionString =  _configuration["ConnectionStrings:SqlServerConnection"];

Helper帮助类

        private static IConfigurationRoot Configuration { get; set; }static ConfigurationTools(){var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);Configuration = builder.Build();}/// <summary>/// 默认获取ConnectionStrings节点下配置/// </summary>/// <param name="name"></param>/// <returns></returns>public static string GetConnectionString(string name){return Configuration.GetConnectionString(name);}/// <summary>/// 将Key查询的数据自动封装成类/// </summary>/// <typeparam name="T"></typeparam>/// <param name="key"></param>/// <returns></returns>public static T GetAppSetting<T>(string key){return Configuration.GetSection(key).Get<T>();}