Post request going to Get function in WEB API in ASP.NET MVC 4

Question

I have created a controller in the ASP.NET Web API. Below is the code for the controller

public class CalculateController : ApiController
{
    public IEnumerable<string> Get()
    {

        return new string[] { "from get method" };

    }

    public IEnumerable<string> Post([FromBody]string value)
    {

        return new string[] { "from post method" };
    }
}

Below is the code that I am using to make a post request to the webAPI

HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create("http://localhost:62479/api/calculate");

        StringBuilder postdata = new StringBuilder("value=Anshuman");
        byte[] data = Encoding.UTF8.GetBytes(postdata.ToString());
        httpWReq.Method = "POST";
        httpWReq.ContentType = "application/x-www-form-urlencoded";
        httpWReq.ContentLength = data.Length;

        using (Stream stream = httpWReq.GetRequestStream())
        {
            stream.Write(data, 0, data.Length);
        }
        HttpWebResponse response = (HttpWebResponse)httpWReq.GetResponse();
        string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

The problem is that even if I make a POST request even then the data is returned from the GET method of the Controller. I have not made any changes in the default configuration of the Web API project. I am using MVC 4.

Thanks for your time. If any other information is required then please add a comment.

I have both the projects running in Visual Studio 2012 on the same machine.

Try explicitly providing action name -localhost:62479/api/calculate/Post — malkam
– malkam, Commented Dec 17, 2014 at 13:28
@malkam that does not work. Also the default URL Route configuration does not include action names in the URL — Anshuman Jasrotia
– Anshuman Jasrotia, Commented Dec 17, 2014 at 13:38

aleha_84 · Accepted Answer · 2014-12-17 14:00:24Z

3

your post method without parameters.

by default it looks like this:

public void Post([FromBody]string value)
{
    //do something with data you posted
}

in your case, if you want return some string data:

public IEnumerable<string> Post([FromBody]string value)
{
    return new string[] { "from post method" };
}

Just tested your code. It works fine, and post method hitted correctly. But in my case i got this in WebApiCOnfig.cs. It helps to make web api routing more flexible.

        config.Routes.MapHttpRoute(
            name: "DefaultApiWithId",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional },
            constraints: new { id = @"\d+" }
        );

        config.Routes.MapHttpRoute(
            name: "DefaultApiWithAction",
            routeTemplate: "api/{controller}/{action}"
        );

        config.Routes.MapHttpRoute("DefaultApiGet", "api/{controller}", new { action = "Get" }, new { httpMethod = new HttpMethodConstraint(HttpMethod.Get) });
        config.Routes.MapHttpRoute("DefaultApiPost", "api/{controller}", new { action = "Post" }, new { httpMethod = new HttpMethodConstraint(HttpMethod.Post) });
        config.Routes.MapHttpRoute("DefaultApiPut", "api/{controller}", new { action = "Put" }, new { httpMethod = new HttpMethodConstraint(HttpMethod.Put) });
        config.Routes.MapHttpRoute("DefaultApiDelete", "api/{controller}", new { action = "Delete" }, new { httpMethod = new HttpMethodConstraint(HttpMethod.Delete) });

edited Dec 17, 2014 at 14:00

answered Dec 17, 2014 at 13:29

aleha_84

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3 Comments

Rhumborl Over a year ago

I think the main point being, why is there a POST method which doesn't POST anything!?

Anshuman Jasrotia Over a year ago

I made the changes but still it hits the GET method. Updated the question to reflect the changes.

Anshuman Jasrotia Over a year ago

In addition I also had to upgrade web host package by using PM> Install-Package Microsoft.AspNet.WebApi.WebHost

Scottyjones · Accepted Answer · 2014-12-17 13:58:41Z

0

You can add HttpPost and HttpGet action attributes to the relevant actions which will restrict the post from being directed to the get action by the routes

answered Dec 17, 2014 at 13:58

Scottyjones

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