Content-Type - WebAPI - Request Header

Question

Is it possible for WEBAPI controller to return JSON, even if the header "Content-Type" is not present?

In the default setup, when the header is not present, Exception "No MediaTypeFormatter is available to read an object of type ..." is raising.

Answer 1

add this to your WebApiConfig.cs

config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("text/html") );

now you get json result unless when you send text/xml as "Content-Type"

Answer 2

通常，Web API可以XML格式和JSON格式返回，因此在调用Web API时，您需要在标头中指定内容类型。

Answer 3

It is possible to do so. Just change the default serializer to Json Serializer . More details explained here .

Note: The default serializer of WebApi is Json Serializer . So, even if no content type headers are found on the request, you should get the response in json format.