ServiceStack NetCoreAppSettings 配置文件读取和设置

using Funq;

using Microsoft.AspNetCore.Builder;

using Microsoft.AspNetCore.Hosting;

using Microsoft.Extensions.Configuration;

using Microsoft.Extensions.DependencyInjection;

using ServiceStack;

using SSHost.ServiceInterface;

using System;

using System.IO;

using System.Threading.Tasks;

namespace SSHost

{

    public class Program

    {

        public static void Main(string[] args)

        {

            var host = new WebHostBuilder()

                .UseKestrel()

                .UseContentRoot(Directory.GetCurrentDirectory())

                .UseStartup<Startup>()

                .UseUrls(Environment.GetEnvironmentVariable("ASPNETCORE_URLS") ?? "http://localhost:5000/")

                .Build();

            host.Run();

        }

    }

    public class Startup

    {

        public IConfiguration Configuration { get; set; }

        public Startup(IConfiguration configuration) => Configuration = configuration;

        // This method gets called by the runtime. Use this method to add services to the container.

        public void ConfigureServices(IServiceCollection services)

        {

        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)

        {

            //nuget里添加Microsoft.Extensions.Configuration.json，否则编译不认识AddJsonFile

            var builder = new ConfigurationBuilder()

                  .SetBasePath(env.ContentRootPath)

                  .AddJsonFile($"appsettings.json", optional: true)

                  .AddEnvironmentVariables();

            Configuration = builder.Build();

            app.UseServiceStack(new AppHost

            {

                AppSettings = new NetCoreAppSettings(Configuration)

            });

            app.Run(context =>

            {

                context.Response.Redirect("/metadata");

                return Task.FromResult();

            });

        }

    }

    public class AppHost : AppHostBase

    {

        public AppHost()

            : base("SSHost", typeof(MyServices).Assembly) { }

        public class PageConfig

        {

            public int LightListPageSize { get; set; }

            public int GatewayListPageSize { get; set; }

        }

        public override void Configure(Container container)

        {

            SetConfig(new HostConfig

            {

                DebugMode = AppSettings.Get(nameof(HostConfig.DebugMode), false)

            });

            #region 读取或者设置NetCoreAppSettings

            //读取单个值

            Console.WriteLine($"MaxRecords: {AppSettings.GetString("MaxRecords")}");

            //读取对象属性

            Console.WriteLine($"PageConfig: {AppSettings.GetString("PageConfig:LightListPageSize")}");

            //读取整个对象

            var pageConfig = AppSettings.Get<PageConfig>("PageConfig");

            Console.WriteLine($"ConnectionString: {AppSettings.GetString("ConnectionStrings:DefaultConnection")}");

            //设置每页记录最大数量为200

            AppSettings.Set<int>("MaxRecords", );

            Console.WriteLine($"MaxRecords: {AppSettings.GetString("MaxRecords")}");

            pageConfig.LightListPageSize = ;

            pageConfig.GatewayListPageSize = ;

            //设置属性，然后读取对象

            AppSettings.Set<int>("PageConfig:LightListPageSize", );

            var pageConfig2 = AppSettings.Get<PageConfig>("PageConfig");

            Console.WriteLine("设置配置完毕");

            #endregion

        }

    }

}

{

  "MaxRecords": "",

  "PageConfig": {

    "LightListPageSize": "",

    "GatewayListPageSize": ""

  },

  "ConnectionStrings": {

    "DefaultConnection": "Server=(localdb)\\MSSQLLocalDB;Database=_CHANGE_ME;Trusted_Connection=True;MultipleActiveResultSets=true"

  }

}

>------ 已启动全部重新生成: 项目: SSHost.ServiceModel, 配置: Debug Any CPU ------

>SSHost.ServiceModel -> D:\SSHost\SSHost.ServiceModel\bin\Debug\netstandard2.\SSHost.ServiceModel.dll

>------ 已启动全部重新生成: 项目: SSHost.ServiceInterface, 配置: Debug Any CPU ------

>SSHost.ServiceInterface -> D:\SSHost\SSHost.ServiceInterface\bin\Debug\netstandard2.\SSHost.ServiceInterface.dll

>------ 已启动全部重新生成: 项目: SSHost, 配置: Debug Any CPU ------

>------ 已启动全部重新生成: 项目: SSHost.Tests, 配置: Debug Any CPU ------

>SSHost.Tests -> D:\SSHost\SSHost.Tests\bin\Debug\netcoreapp2.\SSHost.Tests.dll

>Program.cs(,,,): error CS1061: “IConfigurationBuilder”未包含“AddJsonFile”的定义，并且找不到可接受第一个“IConfigurationBuilder”类型参数的可访问扩展方法“AddJsonFile”(是否缺少 using 指令或程序集引用?)

>已完成生成项目“SSHost.csproj”的操作 - 失败。

========== 全部重新生成: 成功  个，失败  个，跳过  个 ==========