[C#/ASP.NET MVC/.NETCORE] HttpServiceCollectionExtensions 클래스 : AddHttpContextAccessor 확장 메소드를 사용해 IHttpContextAccessor 서비스 디폴트 구현 기능 추가하기

■ HttpServiceCollectionExtensions 클래스의 AddHttpContextAccessor 확장 메소드를 사용해 IHttpContextAccessor 서비스 디폴트 구현 기능을 추가하는 방법을 보여준다.

▶ Startup.cs


using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Extensions;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;

using TestProject.Data;

namespace TestProject
{
    /// <summary>
    /// 시작
    /// </summary>
    public class Startup
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 서비스 컬렉션 구성하기 - ConfigureServices(services)

        /// <summary>
        /// 서비스 컬렉션 구성하기
        /// </summary>
        /// <param name="services">서비스 컬렉션</param>
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<DatabaseContext>
            (
                options => options.UseInMemoryDatabase("TestDB")
            );

            services.AddHttpContextAccessor();

            services.AddHttpClient<TodoClient>
            (
                (serviceProvider, httpClient) =>
                {
                    IHttpContextAccessor httpContextAccessor = serviceProvider.GetRequiredService<IHttpContextAccessor>();

                    HttpRequest httpRequest = httpContextAccessor.HttpContext.Request;

                    httpClient.BaseAddress = new Uri(UriHelper.BuildAbsolute(httpRequest.Scheme, httpRequest.Host, httpRequest.PathBase));

                    httpClient.Timeout = TimeSpan.FromSeconds(5);
                }
            );

            services.AddControllers();

            services.AddRazorPages();
        }

        #endregion
        #region 구성하기 - Configure(app, environment)

        /// <summary>
        /// 구성하기
        /// </summary>
        /// <param name="app">애플리케이션 빌더</param>
        /// <param name="environment">웹 호스트 환경</param>
        public void Configure(IApplicationBuilder app, IWebHostEnvironment environment)
        {
            if(environment.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
            }

            app.UseStaticFiles();

            app.UseRouting();

            app.UseEndpoints
            (
                endpoints =>
                {
                    endpoints.MapControllers();

                    endpoints.MapRazorPages();
                }
            );
        }

        #endregion
    }
}

using Microsoft.AspNetCore.Builder;

using Microsoft.AspNetCore.Hosting;

using Microsoft.AspNetCore.Http;

using Microsoft.AspNetCore.Http.Extensions;

using Microsoft.EntityFrameworkCore;

using Microsoft.Extensions.DependencyInjection;

using Microsoft.Extensions.Hosting;

using System;

using TestProject.Data;

namespace TestProject

{

/// <summary>

/// 시작

/// </summary>

public class Startup

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 서비스 컬렉션 구성하기 - ConfigureServices(services)

/// <summary>

/// 서비스 컬렉션 구성하기

/// </summary>

/// <param name="services">서비스 컬렉션</param>

public void ConfigureServices(IServiceCollection services)

{

services.AddDbContext<DatabaseContext>

(

options => options.UseInMemoryDatabase("TestDB")

);

services.AddHttpContextAccessor();

services.AddHttpClient<TodoClient>

(

(serviceProvider, httpClient) =>

{

IHttpContextAccessor httpContextAccessor = serviceProvider.GetRequiredService<IHttpContextAccessor>();

HttpRequest httpRequest = httpContextAccessor.HttpContext.Request;

httpClient.BaseAddress = new Uri(UriHelper.BuildAbsolute(httpRequest.Scheme, httpRequest.Host, httpRequest.PathBase));

httpClient.Timeout = TimeSpan.FromSeconds(5);

}

);

services.AddControllers();

services.AddRazorPages();

}

#endregion

#region 구성하기 - Configure(app, environment)

/// <summary>

/// 구성하기

/// </summary>

/// <param name="app">애플리케이션 빌더</param>

/// <param name="environment">웹 호스트 환경</param>

public void Configure(IApplicationBuilder app, IWebHostEnvironment environment)

{

if(environment.IsDevelopment())

{

app.UseDeveloperExceptionPage();

}

else

{

app.UseExceptionHandler("/Error");

}

app.UseStaticFiles();

app.UseRouting();

app.UseEndpoints

(

endpoints =>

{

endpoints.MapControllers();

endpoints.MapRazorPages();

}

);

}

#endregion

}

TestProject.zip