在asp.net核心中调用asp.net mvc 5 Web api，FromBody始终为null

Question

When I call the asp.net mvc 5 web api in Asp.net Core the input parameter FromBody always is null

asp.net Mvc 6 web api

public void Post([FromBody]string id)
{

}

calling web api in asp.net core

using (var client = new HttpClient())
  {
      string stringData = JsonConvert.
      SerializeObject("test");
      var contentData = new StringContent(stringData, System.Text.Encoding.UTF8,"application/json");
      HttpResponseMessage response1 = client.PostAsync("http://localhost:49741/api/values/", contentData).Result;      
  }

Answer 1

As Crowcoder said. You should register MediaTypeFormatter . Here simple arctile how do that provides to do what you want.

But simpler is choose another way to work with incoming data. As application/json . Create simple Dto class like:

public class TestDataDto
{
    public string Id { get; set; }
}

And change argument type of your Post method:

// POST api/values
public void Post([FromBody]TestDataDto value)
{

}

Then code of your core client should be like this:

static void Main(string[] args)
{
    using (HttpClient httpClient = new HttpClient())
    {
        var someData = JsonConvert.SerializeObject(new { Id = "test" });
        var content = new StringContent(someData, System.Text.Encoding.UTF8, "application/json");

        var result = httpClient.PostAsync("http://localhost:55878/api/values", content).Result;
        if (result.IsSuccessStatusCode)
        {
            Console.WriteLine("All is fine");
        }
        else
        {
            Console.WriteLine($"Something was wrong. HttpStatus: {result.StatusCode}");
        }
    }

    Console.ReadKey();
}