Steps：

• 1.新建一个ASP.NET Core Web项目，SigmalHex.IdentityServer；

• 2.安装包

Install-Package IdentityServer4

• 3.Startup中加入

public class Startup

{

    public void ConfigureServices(IServiceCollection services)

    {

        services.AddIdentityServer()

            .AddTemporarySigningCredential()

            .AddInMemoryApiResources(Config.GetApiResources())

            .AddInMemoryClients(Config.GetClients());

    }

    public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)

    {

        loggerFactory.AddConsole(LogLevel.Debug);

        app.UseDeveloperExceptionPage();

        app.UseIdentityServer();

    }

}

• • AddIdentityServer
    
    注册Identity Server 服务到DI系统。
• • AddTemporarySigningCredential
    
    每次启动的时候，生成一个临时的签名证书

• 4.Config

using IdentityServer4.Models;

using System.Collections.Generic;

namespace SigmalHex.IdentityServer

{

    public class Config

    {

        // scopes define the API resources in your system

        public static IEnumerable<ApiResource> GetApiResources()

        {

            return new List<ApiResource>

            {

                new ApiResource("api1", "My API")

            };

        }

        // client want to access resources (aka scopes)

        public static IEnumerable<Client> GetClients()

        {

            return new List<Client>

            {

                new Client

                {

                    ClientId = "client",

                    AllowedGrantTypes = GrantTypes.ClientCredentials,

                    ClientSecrets =

                    {

                        new Secret("secret".Sha256())

                    },

                    AllowedScopes = { "api1" }

                }

            };

        }

    }

}

• 5.启动，即完成了IdentityServer内存版的搭建。

using Microsoft.AspNetCore.Hosting;

using System;

using System.IO;

namespace SigmalHex.IdentityServer

{

    public class Program

    {

        public static void Main(string[] args)

        {

            Console.Title = "IdentityServer";

            var host = new WebHostBuilder()

                .UseKestrel()

                .UseUrls("http://localhost:5000")

                .UseContentRoot(Directory.GetCurrentDirectory())

                .UseIISIntegration()

                .UseStartup<Startup>()

                .Build();

            host.Run();

        }

    }

}