HTTP 405 Errors after Publishing Web API 2 Applica

I have a Web Api Controller and i have tested all actions on localhost and it works well.But when i Published it on Web Server,Just Actions with [HttpGet] works and [HttpPost] Actions return Http 405 error

public class ContentController : ApiController
{
    [HttpGet]
    public async Task<IHttpActionResult> AdvantageList()
    {
        //return ok 200
    }
    [HttpPost]
    public async Task<IHttpActionResult> SaveAdvantage(ContentModel model)
    {
        //return 405 
    }
}

I used below method on client

var r = await ClientManager.Client.PostAsJsonAsync("api/Content/SaveAdvantage", Advantage);

But it will retrun below response form server.I Used PostAsJsonAsync method but it says that The requested resource does not support http method 'GET' Does any one know why?

{ StatusCode: 405, ReasonPhrase: 'Method Not Allowed', Version: 1.0, Content: System.Net.Http.StreamContent, Headers: { Pragma: no-cache X-Powered-By-Plesk: PleskWin Connection: close Cache-Control: no-cache Date: Fri, 29 Sep 2017 08:53:51 GMT Server: Microsoft-IIS/8.0 X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET Content-Length: 72 Allow: POST Content-Type: application/json; charset=utf-8 Expires: -1 }}

And

"{\"message\":\"The requested resource does not support http method 'GET'.\"}"

I have the below in my web api config:

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Routes.MapHttpRoute("DefaultApi", "api/{controller}/{action}");
        config.Routes.MapHttpRoute("WithId", "api/{controller}/{action}/{id}", new { id = RouteParameter.Optional });
        config.Routes.MapHttpRoute("TwoId", "api/{controller}/{action}/{id}/{id2}", new { id = RouteParameter.Optional, id2 = RouteParameter.Optional });

        config.MapHttpAttributeRoutes();

        var formatter = GlobalConfiguration.Configuration.Formatters.JsonFormatter;
        formatter.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver();
    }
}

I have below handlers in Web.config

<system.webServer>
<handlers>
  <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
  <remove name="OPTIONSVerbHandler" />
  <remove name="TRACEVerbHandler" />
  <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
</system.webServer>

I use this webapi2 application in my winform application.

回答1:

It is the http error code who tell us that it is a right problem. Have a look at : https://fr.wikipedia.org/wiki/Liste_des_codes_HTTP

回答2:

In hosting Setting in my web server ,had a property Preferred domain ,i changed it to none and after that it worked properly

回答3:

You have a problem of right on the web server. 405 http code means that the post method is not allowed to use from your web server. Make you sure that you are authenticated when you send request and also make you sure that your request contain some token for authentication.