RestTemplate post for entity

You have to build the profile object this way

MultiValueMap<String, Object> parts = new LinkedMultiValueMap<String, Object>();
parts.add("email", email);

Object response = restTemplate.postForObject("http://localhost:8080/user/", parts, String.class);

My current approach:

final Person person = Person.builder().name("antonio").build();

final ResponseEntity response = restTemplate.postForEntity(
         new URL("http://localhost:" + port + "/person/aggregate").toString(),
         person, Person.class);

MultiValueMap was good starting point for me but in my case it still posted empty object to @RestController my solution for entity creation and posting ended up looking like so:

HashedMap requestBody = new HashedMap();
requestBody.put("eventType", "testDeliveryEvent");
requestBody.put("sendType", "SINGLE");

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);

// Jackson ObjectMapper to convert requestBody to JSON
String json = new ObjectMapper().writeValueAsString(request);
HttpEntity<String> entity = new HttpEntity<>(json, headers);

restTemplate.postForEntity("/generate", entity, String.class);