CODEWITHSUNDEEP
asp.netasp.net-web-apiasp.net-web-api2http-status-code-415
Doug Peters
Doug Peters

Reputation: 529

415 when passing string parameter to Web Api Post method

When I POST this request to http://localhost:61679/api/Login:

Headers =>  Content-Type: text/plain
Body =>     grant_type=password&username=doug&password=12345

I get 415 Unsupported Media Type:

HTTP/1.1 415 Unsupported Media Type
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/10.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?QzpcZGV2ZWxvcG1lbnRcYml0Y29pblxwYXltZW50cy1zZXJ2aWNlLW5vLWNoZWNrc3VtLW5vLXVzZXJcUGF5bWVudHNTZXJ2aWNlXGFwaVxBdXRoZW50aWNhdGU=?=
X-Powered-By: ASP.NET
Date: Mon, 28 Dec 2015 16:58:36 GMT
Content-Length: 900

{"Message":"The request entity's media type 'text/plain' is not supported for this resource.","ExceptionMessage":"No MediaTypeFormatter is available to read an object of type 'String' from content with media type 'text/plain'.","ExceptionType":"System.Net.Http.UnsupportedMediaTypeException","StackTrace":"   at System.Net.Http.HttpContentExtensions.ReadAsAsync[T](HttpContent content, Type type, IEnumerable`1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken)\r\n   at System.Net.Http.HttpContentExtensions.ReadAsAsync(HttpContent content, Type type, IEnumerable`1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken)\r\n   at System.Web.Http.ModelBinding.FormatterParameterBinding.ReadContentAsync(HttpRequestMessage request, Type type, IEnumerable`1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken)"}

The controller:

    // POST api/Login
    public HttpResponseMessage Post([FromBody]string loginDetails)
    {
       // process loginDetails here
    }

Upvotes: 2

Views: 3575

Answers (1)

Anik Saha
Anik Saha

Reputation: 4494

You have to set your Content-Type:application/json; charset=utf-8 instead of text/plain

have to create a viewmodel 

public class LoginDetails{
public string grant_type{get;set;}
public string username{get;set;}
public string password{get;set;}
}

your action result be like 

public HttpResponseMessage Post(LoginDetails loginDetails)

in request time your body be like 

 {
    "grant_type":"...",
    "username":".....",
    "password":"....."
 }

Upvotes: 4

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