我创建了一个新的ASP.NET MVC4 Web Api项目。除了默认的ValuesController之外，我还添加了另一个控制器ScenarioController。它具有与ValuesController完全相同的方法。但是由于某种原因，它的行为不同。
/api/values/ => "value1","value2"
/api/values/1 => "value"
/api/scenario/ => "value1","value2"
/api/scenario/1 => "value1","value2"
^^^^^^^^^^^^^^^^^
should return "value"!
使用断点，我知道
/api/scenario/1实际上被发送到public IEnumerable<string> Get()，而不是预期的public string Get(int id)。为什么呢？参考资料，这里是相关文件（这些是原始的默认mvc4-webapi类，没有修改任何东西）： Global.asax.cs
namespace RoutingTest
{
// Note: For instructions on enabling IIS6 or IIS7 classic mode,
// visit http://go.microsoft.com/?LinkId=9394801
public class WebApiApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
}
WebApiConfig.cs
namespace RoutingTest
{
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
// Uncomment the following line of code to enable query support for actions with an IQueryable or IQueryable<T> return type.
// To avoid processing unexpected or malicious queries, use the validation settings on QueryableAttribute to validate incoming queries.
// For more information, visit http://go.microsoft.com/fwlink/?LinkId=279712.
//config.EnableQuerySupport();
// To disable tracing in your application, please comment out or remove the following line of code
// For more information, refer to: http://www.asp.net/web-api
config.EnableSystemDiagnosticsTracing();
}
}
}
ValuesController.cs
namespace RoutingTest.Controllers
{
public class ValuesController : ApiController
{
// GET api/values
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
// GET api/values/5
public string Get(int id)
{
return "value";
}
}
}
ScenarioController.cs（是的，它在Controllers文件夹中）
namespace RoutingTest.Controllers
{
public class ScenarioController : ApiController
{
// GET api/scenario
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
// GET api/scenario/5
public string Get(int id)
{
return "value";
}
}
}