Difference between JAX-RS and Spring Rest

Examples
Consider the following resource controller using the JAX-RS API:

@Path("/greetings")
public class JaxRsController {

    @GET
    @Path("/{name}")
    @Produces(MediaType.TEXT_PLAIN)
    public Response greeting(@PathParam("name") String name) {

        String greeting = "Hello " + name;
        return Response.ok(greeting).build();
    }
}
The equivalent implementation using the Spring MVC API would be:

@RestController
@RequestMapping("/greetings")
public class SpringRestController {

    @RequestMapping(method = RequestMethod.GET,
                    value = "/{name}",
                    produces = MediaType.TEXT_PLAIN_VALUE)
    public ResponseEntity<?> greeting(@PathVariable String name) {

        String greeting = "Hello " + name;
        return new ResponseEntity<>(greeting, HttpStatus.OK);
    }
}