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API controller in MVC App not working

I have created an mvc application with SSO. I have added an Api controller, but whenever i try to get data from it, i get error.
URI= https://localhost:44305/api/graph/get
Error:
Server Error in '/' Application.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL: /api/graph/get
Here is my Route config
public class RouteConfig
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
//routes.MapRoute(
// name: "Default",
// url: "{controller}/{action}/{id}",
// defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional });
routes.MapRoute(
name: "Default",
url: "api/{controller}/{action}/{id}",
defaults: new { controller = "Graph", action = "Get", id = UrlParameter.Optional }
);
}
}
This is my web api controller
public JsonResult<List<Claim>> Get()
{
var principal = (User as ClaimsPrincipal);
List<Claim> claimsList = new List<Claim>();
foreach (var claim in principal.Claims)
{
claimsList.Add(claim);
}
return Json<List<Claim>>(claimsList);
}
Not getting any build error. Any help is appreciated

Hy Guys.Thanks for all your help. I have figured out the solution. The answer is that in Global.asax.cs,
GlobalConfiguration.Configure(WebApiConfig.Register)
has to be called before
RouteConfig.RegisterRoutes(RouteTable.Routes).

public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}",
defaults: new { controller = "Default", action = "Index", id = UrlParameter.Optional }
);
}
}
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultDataApi",
routeTemplate: "Api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
FluentValidationModelValidatorProvider.Configure();
}
}

You should have 2 config files:
RoutesConfig.cs and WebApiConfig.cs
RoutesConfig should look like this:
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
Log.Instance().Debug("Registering Routes");
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapMvcAttributeRoutes();
routes.MapRoute("Default", "{controller}/{action}/{id}", new { controller = "Home", action = "Index", id = UrlParameter.Optional });
}
}
WebApiConfig.cs should look like this:
public static class WebApiConfig
{
public static void Configure(HttpConfiguration config)
{
ConfigureRouting(config);
ConfigureFormatters(config);
}
private static void ConfigureFormatters(HttpConfiguration config)
{
config.Formatters.JsonFormatter.SerializerSettings.Converters.Add(new NiceEnumConverter());
}
private static void ConfigureRouting(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional, #namespace = "api" });
}
}
Within global.asax.cs you should have something like this:
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
// Register them in this order
GlobalConfiguration.Configure(WebApiConfig.Configure); //registers WebApi routes
RouteConfig.RegisterRoutes(RouteTable.Routes); //register MVC routes
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
Your controller does look a little strange why not let the default serialiser take care for things for you:
public IEnumerable<Claim> Get()
{
var principal = (User as ClaimsPrincipal);
List<Claim> claimsList = new List<Claim>();
foreach (var claim in principal.Claims)
{
claimsList.Add(claim);
}
return claimsList;
}
EDIT: removed redundant code

Assuming the name of your controller is GraphController, I think the url you should be using is /api/graph/get.
If it's named something different, you'll need to adjust the url accordingly.
Also, there's a separate .cs file in MVC projects you should use to manage WebAPI routes - WebApiConfig.cs

Multiple POST-request in web api

I need to use multiple POST-requests in web API but get an error: "Multiple actions were found that match the request..."
I have 2 POST-requests in my controller:
public void PostStart([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
public void PostLogin([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
My route file looks like this currently:
public static void Register(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "apistart",
routeTemplate: "Home/api/values/start/{id}",
defaults: new { action = "PostStart", id = RouteParameter.Optional }
);
config.Routes.MapHttpRoute(
name: "apilogin",
routeTemplate: "Home/api/values/login/{id}",
defaults: new { action = "PostLogin", id = RouteParameter.Optional }
);
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
If I remove on of the requests from the controller, everything works fine, so my routes seem valid, but when both of requests are present, router can't find the right one.
Any thoughts?
I've tried alredy to use another default route but it changes nothing:
routes.MapHttpRoute(
name: "ActionApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
);

You can use [HttpPost] attribute to specify request method:
[HttpPost]
public void Start([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
[HttpPost]
public void Login([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
That will allows you to use as many post actions as you want with using default action-based route rule.
routes.MapHttpRoute(
name: "ActionApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
);

You should use RouteAttribute to make it work:
[Route("start")]
public void PostStart([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
[Route("login")]
public void PostLogin([FromBody]string value)
{
CookieHeaderValue cookie = Request.Headers.GetCookies("user").FirstOrDefault();
...
}
WebApi doesn't take into consideration method name, only first word to resolve http method. Thats why you have error which says about "Multiple actions..." - there are two actions which can handle POST request.

Unable to hit Web Api in .Net MVC

Hi I am just starting to mess with WebApi to setup a REST api for my angular app.
I simply just added a "Web API 2 Controller with read/write actions"
I then just try to test it by just typing the url in the browser but I get a 404.
Everything is pretty much out of the box.
WebApiConfig.cs looks like
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
RouteConfig.cs is
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 }
);
}
}
Global.asax
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
GlobalConfiguration.Configure(WebApiConfig.Register);
InitializeDatabase("Data Source=.;Initial Catalog=msproto;Integrated Security=True;MultipleActiveResultSets=True;");
}
Is there something I have to add to the web config? If I add a normal controller "MVC 5 Controller with read/write actions" it will hit my breakpoints in the get requests.

Make sure the Web API routes are registered before the MVC routes in your Global.asax.

Use WebApi controller as default instead of MVC vontroller

I have a webapi project and I don't want to return any html or razor views. I want the default controller and action to be an HTTP GET for one of my API controllers. My code is the following:
MVC route config:
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
RouteTable.Routes.MapRoute(
"Default",
"{controller}/{id}",
new { controller = "Enpoint", action = "Get", id = UrlParameter.Optional }
);
}
}
WebApi route config:
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "ApiDefault",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
Application_Start:
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
}
Do you know how can I configure the router to redirect to by default:
GET /api/home

Asp.net MVC Web API Call Redirect to Accountcontroller Login

My code is
RouteConfig:
public static void RegisterRoutes(RouteCollection routes)
{
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Dashboard", action = "Index", id = UrlParameter.Optional }
);
}
WebAPIConfig:
public static void Register(HttpConfiguration config)
{
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
config.Formatters.Clear();
config.Formatters.Add(new JsonMediaTypeFormatter());
}
WebAPI Controller:
public class ServicesController : ApiController
{
public string Get()
{
return "Hello World";
}
}
AccountCtonroller:
public ActionResult Login(string returnUrl)
{
// User Login functionality
ViewBag.ReturnUrl = returnUrl;
return View();
}
Global.asax.cs
protected void Application_Start()
{
GlobalConfiguration.Configure(WebApiConfig.Register);
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
Issue I am facing here is:
1. when i invoke Webapi http://localhost/myapplication/api/services in browser, it redirect to
http://localhost/myapplication/Account/Login?ReturnUrl=%myapplication%2Fapi%2Fservices
Any thoughts on this?
Thanks,

i think your problem is that you dont set action on webapiconfig:
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{param}",
defaults: new { param = RouteParameter.Optional }
);
and you need call to controller with action something like:
http://localhost/myapplication/api/services/Get
And add [AllowAnonymous] as #qamar sais