Cześć,
Zacząłem uczyć się tego frameworka i próbuję wyrzucić na chroma błąd i podgląd stosu:
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace KudvenkatCourse
{
public class Startup
{
private IConfiguration _config;
public Startup(IConfiguration config)
{
_config = config;
}
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseWelcomePage("/IIS");
}
else
{
app.UseExceptionHandler("/Home/Error");
}
FileServerOptions dfo = new FileServerOptions();
dfo.DefaultFilesOptions.DefaultFileNames.Clear();
dfo.DefaultFilesOptions.DefaultFileNames.Add("foo.html");
app.UseFileServer(dfo);
//app.UseFileServer();
//app.UseStaticFiles();
app.UseRouting();
app.Use(async (context, next) =>
{
await context.Response.WriteAsync("Hello from .Use!\n");
await next();
});
app.UseEndpoints(endpoints =>
{
endpoints.MapGet("/", async context =>
{
await context.Response.WriteAsync("Hello from .UseEndpoints!\n");
await context.Response
.WriteAsync(System.Diagnostics.Process.GetCurrentProcess().ProcessName);
await context.Response.WriteAsync("\n" + _config["MyKey"]);
});
});
app.Use(async (context, next) =>
{
await context.Response.WriteAsync("Hello from .Use 2nd!\n");
await next();
});
app.Run(async (context) =>
{
throw new Exception("Holy makarony!");
await context.Response.WriteAsync("Hello from .Run\n");
});
}
}
}
Aplikacja jest do celów testowych i nauki.
app.UseWelcomePage("/IIS"); działa, czyli tryb developerski jest załączany.
A mimo to jak wejdę pod '/abc' to wyświetla mi się napis:
"Hello from .Use!
Hello from .Use 2nd!"
i żadnej obsługi błędów ani nic. Tylko te słowa, ale w Debugu po zatrzymaniu aplikacji pisze:
*Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware: Warning: The response has already started, the error page middleware will not be executed.
*
Swoją drogą czy to nie ".UseEndpoints()" miał być middlewarem terminującym? Zamiast "
.Run()" ? A mimo to to on nawet nie jest wywoływany.