What content-type is set in response when we pass an array to produces condition in Spring MVC (@ResponseBody)

Question

For example if we have -

    @RequestMapping(value = "/someurl", method = {
        RequestMethod.POST, RequestMethod.GET}, produces = {
        MediaType.TEXT_HTML_VALUE, MediaType.APPLICATION_JSON_VALUE})
    @ResponseBody

Edit What will be the response content-type?

For two different accept headers -

1. text/html, application/xhtml+xml, * /*
2. */ *

Thanks

Answer 1

It depends on configured content negotiation and type selected by request. For example if request has header Accept: application/json or client requested resource with suffix ".json" he will receive json response. http://spring.io/blog/2013/05/11/content-negotiation-using-spring-mvc

Answer 2

Your understanding of the parameter is wrong. It does filter the incoming request by types the client accepts. As an example: If you are just producing "text/html" but the client only accepts "application/json" your mapped function in the controller denies the request.

Side note: Which type to produce can be configured with content negotiation