在ASP.NET MVC Web Api中返回Json

Question

I am trying to learn how to create an API with ASP.NET MVC (I'm using vNext). To do this, I'm just trying to return the current date. At this time, I have the following:

using System;
using Microsoft.AspNet.Mvc;

[Route("api/test")]
public class TestController : Controller
{
  [HttpGet("date")]
  public string Date()
  {
    return Json(new { result = 1, currentDate = DateTime.UtcNow });   
  }
}

I execute this from fiddler via the composer tab. When I do that, http://localhost:5001/api/test . I press Execute. The result is a status code of 200. However, there is no JSON. Instead, I get the "Welcome Your ASP.NET vNext application has successfully started" page.

What am I doing wrong?

Answer 1

Your ActionResult seems to be invalid:

Try with " JsonResult " and Allowed Json behavior.

public class TestController : Controller
{
    [Route("api/test")]
    public JsonResult Date()
    {
        return Json(new { result = 1, currentDate = DateTime.UtcNow }, JsonRequestBehavior.AllowGet);
    }
}

You Also need to enable Attribute routing in RouteConfig class:

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.MapMvcAttributeRoutes();

    routes.MapRoute(
        name: "Default",
        url: "{controller}/{action}/{id}",
        defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
    );
}