ASP.NET Core 2.2, input formatters for XML

Question

I'm using asp.net core 2.2 and trying to allow additional content-type value for XML. So I configured in Startup.cs like this.

services.AddMvc(options =>
        {
            options.ReturnHttpNotAcceptable = true;
            options.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter());
            options.InputFormatters.Add(new XmlSerializerInputFormatter(options));
        })
        .SetCompatibilityVersion(CompatibilityVersion.Version_2_2); 

In fact, I ended up getting 415 Unsupported Media Type status in postman. Has anyone succeeded with adding XML content-type value?

AuthorsController.cs:

    [HttpPost]
    public ActionResult CreateAuthor([FromBody] AuthorForCreationDto author)
    {
        ...
    }

Answer 1

You need to set RespectBrowserAcceptHeader to true to allow content negotiation.

// Add XML Content Negotiation
config.RespectBrowserAcceptHeader = true;


services.AddMvc(options => {
    //Enable this to allow content negotiation.
    options.RespectBrowserAcceptHeader = true;

    options.ReturnHttpNotAcceptable = true;
    options.OutputFormatters.Add(new XmlDataContractSerializerOutputFormatter());
    options.InputFormatters.Add(new XmlSerializerInputFormatter(options));
})
.SetCompatibilityVersion(CompatibilityVersion.Version_2_2);