How to change the default controller and action in

问题:

I'm creating an ASP.NET Core API app, and currently, and when one creates a new project there is a controller named Values, and by default the API opens it when you run. So, I deleted that controller and added a new controller named Intro, and inside it an action named Get. In the Startup.cs file, I have the following lines of code:

app.UseMvc(opt =>
{
    opt.MapRoute("Default",
        "{controller=Intro}/{action=Get}/{id?}");
});

And my Intro controller looks like this:

[Produces("application/json")]
[Route("api/[controller]")]
[EnableCors("MyCorsPolicy")]
public class IntroController : Controller
{
    private readonly ILogger<IntroController> _logger;

    public IntroController(ILogger<IntroController> logger)
    {
        _logger = logger;
    }

    [HttpGet]
    public IActionResult Get()
    {
        // Partially removed for brevity
    }
}

But, again when I run the API, it by default tries to navigate to /api/values, but since I deleted the Values controller, now I get a 404 not found error. If I manually then navigate to /api/intro, I get the result that is provided from my Get action inside the Intro controller. How can I make sure that when the API run (for example through Debug->Start Without Debugging) that it by default gets the Get action from the Intro controller?

回答1:

You can change it in launchSettings.json file in Properties node. There should be field launchUrl which contains default launching url