Spring mvc : Changing default Response format from xml to json

Question

I have gone through other similar asked questions but nothing worked for me.

All my API\'s return JSON as response by Default:

Answer 1

For me, adding

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
        configurer.defaultContentType(MediaType.APPLICATION_JSON_UTF8);
    }

}

solved the problem.

Now by default all RestControllers return JSON, if no Accept header in the request. Also if Accept: application/xml header is passed, then result is XML.

Also, worth reading: https://spring.io/blog/2013/05/11/content-negotiation-using-spring-mvc