ASP.NET Core 启动过程

• ASP.NET Core 启动过程
  • 环境准备
    • 项目结构
    • 项目环境
  • 开始
    • 启动流程
    • 修改项目
    • 结果
    • 不通过Startup进行注册
  • 项目地址
  • 课程推荐

环境准备

项目结构

项目环境

开始

启动流程

修改项目

修改 Program.cs

public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }
    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder =>
            {
                Console.WriteLine("Configure WebHost Defaults");
                webBuilder.UseStartup<Startup>();
            })
            .ConfigureHostConfiguration(builder =>
            {
                Console.WriteLine("Configure Host Configuration");
            })
            .ConfigureServices(service =>
            {
                Console.WriteLine("Configure Services");
            })
            .ConfigureAppConfiguration(builder => {
                Console.WriteLine("Configure App Configuration");
            });
}

修改 Startup.cs

 public class Startup
 {
     public Startup(IConfiguration configuration)
     {
         Console.WriteLine("Startup");
         Configuration = configuration;
     }
     public IConfiguration Configuration { get; }
     // This method gets called by the runtime. Use this method to add services to the container.
     public void ConfigureServices(IServiceCollection services)
     {
         Console.WriteLine("Startup - Configure Services");
         services.AddControllers();
     }
     // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
     public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
     {
         Console.WriteLine("Startup - Configure");
         if (env.IsDevelopment())
         {
             app.UseDeveloperExceptionPage();
         }
         app.UseRouting();
         app.UseAuthorization();
         app.UseEndpoints(endpoints =>
         {
             endpoints.MapControllers();
         });
     }
 }

结果

不通过Startup进行注册

对 Program.cs 稍作修改

public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }
    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder =>
            {
                Console.WriteLine("Configure WebHost Defaults");
                //webBuilder.UseStartup<Startup>();
                webBuilder.ConfigureServices(services => {
                    Console.WriteLine("webBuilder - Configure Services");
                    services.AddControllers();
                });
                webBuilder.Configure(app => {
                    Console.WriteLine("webBuilder - Configure");
                    app.UseRouting();
                    app.UseAuthorization();
                    app.UseEndpoints(endpoints =>
                    {
                        endpoints.MapControllers();
                    });
                });
            })
            .ConfigureHostConfiguration(builder =>
            {
                Console.WriteLine("Configure Host Configuration");
            })
            .ConfigureServices(service =>
            {
                Console.WriteLine("Configure Services");
            })
            .ConfigureAppConfiguration(builder => {
                Console.WriteLine("Configure App Configuration");
            });
}

结果

项目地址

GitHub: https://github.com/AiDaShi/GeekTimeLearning

课程推荐