SPR-12481

With a default content-type application/json

curl localhost:8080/SPR-12481/
{"firstName":"Sherlock","lastName":"Holmes"}% 

curl -H "Accept: application/xml" localhost:8080/SPR-12481/
<User><firstName>Sherlock</firstName><lastName>Holmes</lastName></User>% 

curl -H "Accept: application/json" localhost:8080/SPR-12481/
{"firstName":"Sherlock","lastName":"Holmes"}%             

curl -H "Accept: */*" localhost:8080/SPR-12481/
{"firstName":"Sherlock","lastName":"Holmes"}%