JSON Jar

src/main/java/io/zipcoder/tc_spring_poll_application/controllers/PollController.java

 import io.zipcoder.tc_spring_poll_application.domain.Poll;
 import io.zipcoder.tc_spring_poll_application.repositories.PollRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+
+import java.net.URI;
 
 @RestController
 public class PollController {
 
     @RequestMapping(value = "/polls", method = RequestMethod.POST)
     public ResponseEntity<?> createPoll(@RequestBody Poll poll){
+
+        URI newPollUri = ServletUriComponentsBuilder
+                .fromCurrentRequest()
+                .path("{id}")
+                .buildAndExpand(poll.getId())
+                .toUri();
+
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.setLocation(newPollUri);
+
         poll = pollRepository.save(poll);
-        return new ResponseEntity<>(null, HttpStatus.CREATED);
+        return new ResponseEntity<>(httpHeaders, HttpStatus.CREATED);
     }