odata query works again ApiController but does not work again ODataController - asp.net-web-api

Question

I try use System.Web.OData.ODataController in WebAPI 2.
WebConfig.cs
ODataModelBuilder builder = new ODataConventionModelBuilder();
builder.EntitySet<User>("User");
config.MapODataServiceRoute(
routeName: "ODataRoute",
routePrefix: null,
model: builder.GetEdmModel());
Controller:
public class UserApiODataController : ODataController
{
[Route("api/lookups/users")]
[EnableQuery(AllowedQueryOptions = AllowedQueryOptions.All)]
public IHttpActionResult GetUsers()
{
try
{
var context = new DbContenxt();
return Ok(context.Users.AsQueryable());
}
catch (Exception exception)
{
return InternalServerError(exception);
}
}
}
When I try query data I get error:
GET http://localhost:58786/api/lookups/users 406 (Not Acceptable)
When I replace ODataController with ApiController query works good.
Request Header:
Accept:application/atomsvc+xml;q=0.8, application/json;odata=fullmetadata;q=0.7, application/json;q=0.5, */*;q=0.1
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Cache-Control:no-cache
Connection:keep-alive
DataServiceVersion:2.0
Host:localhost:58786
MaxDataServiceVersion:2.0
Origin:http://localhost:62131
Pragma:no-cache
Referer:htpp://localhost:62131/
User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36
ODataController Response header:
Remote Address:[::1]:58786
Request URL:http://localhost:58786/api/lookups/users
Request Method:GET
Status Code:406 Not Acceptable
Response Headers
view source
Access-Control-Allow-Credentials:true
Access-Control-Allow-Origin:http://localhost:62131
Cache-Control:no-cache
Content-Length:0
Date:Mon, 30 Nov 2015 16:09:25 GMT
Expires:-1
Pragma:no-cache
Server:Microsoft-IIS/10.0
X-AspNet-Version:4.0.30319
X-Powered-By:ASP.NET
X-SourceFiles:=?UTF-8?B?RDpccHJvamVjdHNcZG9rdW1lbnRhXFN3YWxsb3dcU3JjXFN3YWxsb3cuV2ViQXBpXGFwaVxsb29rdXBzXExpY2Vuc2VUeXBl?=
ApiController Response Header
Access-Control-Allow-Credentials:true
Access-Control-Allow-Origin:http://localhost:62131
Cache-Control:no-cache
Content-Length:247
Content-Type:application/json; charset=utf-8
Date:Mon, 30 Nov 2015 16:20:53 GMT
Expires:-1
Pragma:no-cache
Server:Microsoft-IIS/10.0
X-AspNet-Version:4.0.30319
X-Powered-By:ASP.NET
X-SourceFiles:=?UTF-8?B?RDpccHJvamVjdHNcZG9rdW1lbnRhXFN3YWxsb3dcU3JjXFN3YWxsb3cuV2ViQXBpXGFwaVxsb29rdXBzXExpY2Vuc2VUeXBl?=
On client side I use JayData.
What is wrong ? Any idea?

Answer 1

First, from the namespace System.Web.OData.ODataController, I think you are using the Web API OData V4 library. V4 doesn't accept application/atomsvc+xml because only "Json" is the standard in OData V4 spec.
Second, odata=fullmetadata is the OData V3 metadata header, for V4, it should be odata.metadata=full
Third, [Route("api/lookups/users")] is Web API attribute. If you want to use ODataController, please use the OData version. [ODataRoute("...")]
Fourth, please make sure the route template in [Route(...)] follows up the OData Uri conventions. See more detail here
Fifth, you can get more tutorial from here.
Hope it can help you. Thanks.