Web Api控制器未找到错误

Question

不确定我在这里缺少什么。我有Web API控制器但是当我使用

调用api时

 http://localhost:10843/api/Lookup/GetData

我收到错误

[HttpException]: The controller for path '/api/Lookup/GetData' was not found or does not implement IController.

这是实施。请注意，我使用Unity进行依赖注入，所以我假设在运行时Unity将提供IMyService和IMapper。

        public class LookupController : ApiController
        {
            IMyService _service = null;
            IMapper _mapper = null;


            public LookupController(IMyService service, IMapper mapper)
            {
                _service = service;
                _mapper = mapper;
            }

            public IEnumerable<MyModel> GetData()
            {
                var result _service.GetData();
                return _mapper.Map<IEnumerable<MyDodel>>(result);
            }
         }



        public static class WebApiConfig
        {
            public static void Register(HttpConfiguration config)
            {
                // Web API configuration and services

                // Web API routes
                config.MapHttpAttributeRoutes();

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

另外我想知道我需要默认构造函数吗？