I have an ASP.NET project and everything is returning a 404, here's my startup code

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
    }

    // 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();
        else
            app.UseExceptionHandler("/Home/Error");

        app.UseStaticFiles();

        app.UseAuthentication();

        app.UseRouting();

        app.UseAuthorization();
        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Index}/{id?}");

            endpoints.MapGet("/debug/routes", async ctx =>
            {
                await ctx.Response.WriteAsync(string.Join(", ", endpoints.DataSources.SelectMany(x => x.Endpoints)));
            });
        });

    }
}

here's a sample controller:

public class Home : Controller
{
    private readonly DatabaseContext _databaseContext;

    public Home(DatabaseContext databaseContext)
    {
        Console.WriteLine($"Initialized home controller"); // This doesn't get called at all.
        _databaseContext = databaseContext;
        _databaseContext.Database.EnsureCreated();

    }

    [HttpGet("/home")]
    public IActionResult Index()
    {
        ViewData["Products"] = _databaseContext.Products.ToList();
        return View();
    } 
    .....

and whenever I launch the server it I would go to /home and it would return 404, I also go to /debug/routes and it would show only the 2 endpoints inside the UseEndpoints function but never the controller classes I made

CodePudding user response：

Try registering you db context in service as below. You could be getting error due to dependency of DatabaseContext on your HomeController would not be able to resolve.

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add below line
    services.AddDbContext<DatabaseContext>(options => options.UseSqlServer(connectionString));
    services.AddControllersWithViews();
}

CodePudding user response：

In the Configure(IApplicationBuilder app, IWebHostEnvironment env) method of the Startup class you need something like: app.MapControllers();

I think you controllers are registered to DI throught the call services.AddControllersWithViews(); but there is no middleware registration to invoke your controllers, wich should be done in the Configure method.