Question

我已经启动了一个web api项目，我正在尝试向现有控制器添加一个新动作。这是我的控制器代码和配置：

namespace QAServices.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            ViewBag.Title = "Home Page";

            return View();
        }

        //[Route("Home/Welcome")] I have also tried this but it doesn't work.
        public HttpResponseMessage Welcome()
        {
            HttpResponseMessage response = new HttpResponseMessage();
            response.StatusCode = HttpStatusCode.OK;
            return response;
        }

        public ActionResult ProductPage()
        {
            return View();
        }
    }
}

RouteConfig

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

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

WebApiConfig

namespace QAServices
{
    public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API configuration and services
            // Configure Web API to use only bearer token authentication.
            config.SuppressDefaultHostAuthentication();
            config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));

            // Web API routes
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "{controller}/{action}/{id}",
                defaults: new { action = "GET", id = RouteParameter.Optional }
            );
        }
    }
}

当我尝试运行新动作时，我遇到以下错误：

<Error>
    <Message>
        No HTTP resource was found that matches the request URI 'http://localhost:1095/Home/Welcome'.
    </Message>
    <MessageDetail>
        No type was found that matches the controller named 'Home'.
    </MessageDetail>
</Error>

我已经按照这些但无法弄清楚出了什么问题：

Answer 1

您的代码适合我。我收到了回复StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: , Headers: { }。

你的HomeController只是一个普通的MVC控制器。但是，您获得的响应似乎是WebApi响应。所以它似乎表明请求被路由到ApiController。

您的项目中是否有可能使用[RoutePrefix("Home")]装饰但没有Welcome操作方法的ApiController？

此外，如果您混合使用ApiController和MVC Controller，我会保留默认的WebApiConfig路由模板api/{controller}/{id}，或至少区别于用于MVC控制器的模板。

Answer 2

将public HttpResponseMessage Welcome()更改为public ActionResult Welcome()。在ASP.NET MVC控制器中，操作需要返回ActionResult。

ASP.NET：新动作不起作用

2 个答案: