ASP.NETCoreのStartupクラスとProgram.csとは何ですか

「C＃ASP.NET Core開発者」コース



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前書き

Program.cs — , . Program.cs ASP.NET Core , Program.cs .NET Framework. Program.cs Startup.cs, IISIntegration IWebHostBuilder, Main



.

Global.asax ASP.NET Core. ASP.NET Core Global.asax Startup.cs.

Startup.cs — , Program.cs . . Startup .

Program.cs?

Program.cs — , . Program.cs IWebHost, -.

public class Program {  
    public static void Main(string[] args) {  
        BuildWebHost(args).Run();  
    }  
    public static IWebHost BuildWebHost(string[] args) => WebHost.CreateDefaultBuilder(args).UseStartup < startup > ().Build();  
}  
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

WebHost IWebHost, IWebHostBuilder IWebHostBuilder, . CreateDefaultBuilder()



WebHostBuilder.

UseStartup()



Startup



, -. Startup.

Build()



IWebHost, Run()



- .

 Program.cs ASP.NET Core -.

public static IWebHostBuilder CreateDefaultBuilder(string[] args) {  
    var builder = new WebHostBuilder().UseKestrel().UseContentRoot(Directory.GetCurrentDirectory()).ConfigureAppConfiguration((hostingContext, config) => {  
        /* setup config */ }).ConfigureLogging((hostingContext, logging) => {  
        /* setup logging */ }).UseIISIntegration()  
    return builder;  
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

UseKestrel()



, Kestrel -. Kestrel — - ASP.NET Core . Asp.Net Core, IIS (UseIISIntegration()



), .

UseIISIntegration()



, UseContentRoot()



, UseEnvironment(Development)



, UseStartup()



, Appsetting.json Environment Variable. UseContentRoot



.

loglevel, .  loglevel, appsetting.json.

.ConfigureLogging(logging => 
{ logging.SetMinimumLevel(LogLevel.Warning); }) 
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

, program.cs, .

.ConfigureKestrel((context, options) => 
{ options.Limits.MaxRequestBodySize = 20000000; });  
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

ASP.net Core , ( IIS, -), IIS, Apache, Nginx . .

Startup?

startup.cs ? , startup.cs , , , public, private, internal. Startup. ASP.NET Core .

Startup{EnvironmentName}



, EnvironmentName



Startup (Environment Specific), // .

ASP.NET Core , Development, Production Staging. ASPNETCORE_ENVIRONMENT



(into Hosting Environment interface).

startup.cs



? , Startup.

Startup , ConfigureServices Configure, .

Startup

public class Startup {  
    // Use this method to add services to the container.  
    public void ConfigureServices(IServiceCollection services) {  
        ...  
    }  
    // Use this method to configure the HTTP request pipeline.  
    public void Configure(IApplicationBuilder app) {  
        ...  
    }  
}  
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

ConfigureServices

Startup, . - , ConfigureService



.

ConfigureServices



IServiceCollection



. public, .

public void ConfigureServices(IServiceCollection services)  
{  
   services.AddMvc();  
}  
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

Configure

Configure



, HTTP-. (middleware) HTTP-. IApplicationBuilder



, IHostingEnvironment



ILoggerFactory



. - ConfigureService



, Configure



.

public void Configure(IApplicationBuilder app)  
{  
   app.UseMvc();  
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

, MVC . UseMvc()



Configure AddMvc()



ConfigureServices



. UseMvc



. (Middleware) — , Asp.net Core. , .

app.UseHttpsRedirection();  
app.UseStaticFiles();  
app.UseRouting();  
app.UseAuthorization();  
UseCookiePolicy();  
UseSession(); 
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

http- Use



, Run



Map



.

Run

Run HTTP-. , , , HTTP-.

Use

( next) , HTTP- , .

Map

Map , .

app.Map("/MyDelegate", MyDelegate);
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

,

ASP.net Core (Dependency Injection



). , . — Startup



.

AddTransient

Transient () ; .

Scoped

Scoped — , .

Singleton

Singleton — .

startup.cs Program.cs?

: , .

, program.cs startup.cs Asp.net Core . (Environment Variable), , . , , UseIIsintegration()



UseKestrel()



.

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