■ IExceptionHandlerPathFeature 인터페이스를 사용해 오류 처리기 컨트롤러 또는 페이지에서 예외 및 요청 경로를 구하는 방법을 보여준다.
▶ Properties/launchSettings.json
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{ "iisSettings" : { "windowsAuthentication" : false, "anonymousAuthentication" : true, "iisExpress" : { "applicationUrl" : "http://localhost:11944", "sslPort" : 44399 } }, "profiles" : { "IIS Express" : { "commandName" : "IISExpress", "launchBrowser" : true, "environmentVariables" : { "ASPNETCORE_ENVIRONMENT" : "Production" } }, "TestProject" : { "commandName" : "Project", "launchBrowser" : true, "applicationUrl" : "https://localhost:5001;http://localhost:5000", "environmentVariables" : { "ASPNETCORE_ENVIRONMENT" : "Production" } } } } |
▶ 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.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.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseRouting(); app.UseAuthorization(); app.UseEndpoints ( endpoints => { endpoints.MapRazorPages(); } ); } #endregion } } |
▶ Pages/Index.cshtml.cs
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using Microsoft.AspNetCore.Mvc.RazorPages; using System; namespace TestProject.Pages { /// <summary> /// 인덱스 모델 /// </summary> public class IndexModel : PageModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region GET 요청시 처리하기 - OnGet() /// <summary> /// GET 요청시 처리하기 /// </summary> public void OnGet() { throw new Exception(); } #endregion } } |
▶ Pages/Error.cshtml.cs
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using Microsoft.AspNetCore.Diagnostics; using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.RazorPages; using System.Diagnostics; using System.IO; using System.Text; namespace TestProject.Pages { /// <summary> /// 에러 모델 /// </summary> [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)] public class ErrorModel : PageModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 요청 ID - RequestID /// <summary> /// 요청 ID /// </summary> public string RequestID { get; set; } #endregion #region 요청 ID 표시 여부 - ShowRequestID /// <summary> /// 요청 ID 표시 여부 /// </summary> public bool ShowRequestID => !string.IsNullOrEmpty(RequestID); #endregion #region 예외 메시지 - ExceptionMessage /// <summary> /// 예외 메시지 /// </summary> public string ExceptionMessage { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ErrorModel() /// <summary> /// 생성자 /// </summary> public ErrorModel() { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region GET 요청시 처리하기 - OnGet() /// <summary> /// GET 요청시 처리하기 /// </summary> public void OnGet() { RequestID = Activity.Current?.Id ?? HttpContext.TraceIdentifier; IExceptionHandlerPathFeature feature = HttpContext.Features.Get<IExceptionHandlerPathFeature>(); StringBuilder stringBuilder = new StringBuilder(); if(feature?.Error is FileNotFoundException) { stringBuilder.Append("File error thrown"); } else { stringBuilder.Append("Error thrown"); } if(feature?.Path == "/" || feature?.Path == "/index") { stringBuilder.Append(" from home page"); } else { stringBuilder.Append($" from {feature?.Path}"); } ExceptionMessage = stringBuilder.ToString(); } #endregion } } |
