How to change default Web API 2 to JSON formatter?

c# asp.net-web-api asp.net-web-api2
Nick Kahn picture Nick Kahn · Aug 10, 2014 · Viewed 54.7k times · Source

I have a Web API project that returns some product data. It negotiates the return type correctly depending on the Accept header (JSON/XML) of the request. The problem is, if no Accept header is specified it returns XML, but I want it to return JSON by default

http://website.com/MyPage?type=json // returns json
http://website.com/MyPage?type=xml // returns xml
http://website.com/MyPage // returns xml by default

Here is my current code looks like:

GlobalConfiguration.Configuration.Formatters.XmlFormatter.MediaTypeMappings.Add(
new QueryStringMapping("type", "xml", new MediaTypeHeaderValue("application/xml")));

GlobalConfiguration.Configuration.Formatters.JsonFormatter.MediaTypeMappings.Add(
new QueryStringMapping("type", "json", new MediaTypeHeaderValue("application/json")));

Answer

Triet Doan picture Triet Doan · Jul 3, 2015

Add this in your App_Start/WebApiConfig.cs:

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

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