■ UseMiddlewareExtensions 클래스의 UseMiddleware 확장 메소드를 사용해 응답 가공 미들웨어를 등록하는 방법을 보여준다.
▶ ResponseProcessingMiddleware.cs
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using Microsoft.AspNetCore.Http; using System.Threading.Tasks; namespace TestProject { /// <summary> /// 응답 가공 미들웨어 /// </summary> public class ResponseProcessingMiddleware { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 다음 미들웨어 /// </summary> private RequestDelegate next; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ResponseProcessingMiddleware(next) /// <summary> /// 생성자 /// </summary> /// <param name="next">다음 미들웨어</param> public ResponseProcessingMiddleware(RequestDelegate next) { this.next = next; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 호출하기 - Invoke(context) /// <summary> /// 호출하기 /// </summary> /// <param name="context">HTTP 컨텍스트</param> /// <returns>태스크</returns> public async Task Invoke(HttpContext context) { await next.Invoke(context); if(context.Response.StatusCode == 404) { await context.Response.WriteAsync ( $"<h1>You are not authorized to access to {context.Request.Host.Host}{context.Request.Path}</h1>" ); } } #endregion } } |
▶ Startup.cs
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using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; namespace TestProject { /// <summary> /// 시작 /// </summary> public class Startup { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 구성 - Configuration /// <summary> /// 구성 /// </summary> public IConfiguration Configuration { get; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Startup(configuration) /// <summary> /// 생성자 /// </summary> /// <param name="configuration">구성</param> public Startup(IConfiguration configuration) { Configuration = configuration; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// 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.AddControllersWithViews(); } #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("/Home/Error"); app.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseMiddleware<ResponseProcessingMiddleware>(); app.UseRouting(); app.UseAuthorization(); app.UseEndpoints ( endpoints => { endpoints.MapControllerRoute ( name : "default", pattern : "{controller=Home}/{action=Index}/{id?}" ); } ); } #endregion } } |
