I read that by default, Web API will return JSON Data but for some reason when creating an API, it returns XML instead of JSON.
public class CurrencyController : ApiController
{
private CompanyDatabaseContext db = new CompanyDatabaseContext();
// GET api/Currency
public IEnumerable<Currency> GetCurrencies()
{
return db.Currencies.AsEnumerable();
}
}
I haven't modified anything out of the ordinary so I'm stumped
if you modify your WebApiConfig as follows you'll get JSON by default.
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
var appXmlType = config.Formatters.XmlFormatter.SupportedMediaTypes.FirstOrDefault(t => t.MediaType == "application/xml");
config.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType);
}
}
Web Api looks for the headers of the upcoming request to choose the returning data type. For instance, if you set Accept:application/json it will automatically set the returning type to JSON.
Besides that, setting content-type gives a clue to Web-API about upcoming request data type. So if you want to post JSON data to Web API you should have Content-Type:application/json in header.
