Supporting multiple content types in a Spring-MVC controller

Question

A Rails controller makes it very easy to support multiple content types.

respond_to do |format|
  format.js { render :json => @obj }
  format.xml
  format         


        

Answer 1

Here goes the working example controller, that renders JSON and HTML both based on request Header "Content-Type".

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.util.MimeTypeUtils;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class PersonService {
    @RequestMapping(value = "/persons/{userId}", method = RequestMethod.GET)
    public ResponseEntity getPersonByName(@RequestHeader("Content-Type") String contentMediaType,
            @PathVariable("userId") String userId,@RequestParam("anyParam") boolean isAscending) throws IOException {

        Person person = getPersonById(userId);
        if (isJSON(contentMediaType)) {
            return new ResponseEntity(person, HttpStatus.OK);
        }

        return new ResponseEntity("Your HTML Goes Here", HttpStatus.OK);
        //Note: Above you could use any HTML builder framework, like HandleBar/Moustache/JSP/Plain HTML Template etc.
    }


    private static final boolean isJSON(String contentMediaType) {
        if ("application/json".equalsIgnoreCase(contentMediaType)) {
            return true;
        }

        return false;
    }

}