Why restTemplate.put() throws "HttpClientErrorException: 404 Not Found"

Question

I make a put request

RestTemplate restTemplate = new RestTemplate();
restTemplate.put(new URI("http://localhost:8080/test"), dto);

which successfully hits the rest endpoint

@RequestMapping(value = "/test", method=RequestMethod.PUT)
public void test123(@RequestBody DTO dto) {
    System.out.println("phone:"+dto.getPhone()); 
}

but the "put" method on the client throws exception, even though the server is hit successfully and I don't expect return value.

Exception in thread "main" org.springframework.web.client.HttpClientErrorException: 404 Not Found
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91)
    at org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:589)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:547)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:518)
    at org.springframework.web.client.RestTemplate.put(RestTemplate.java:394)
    at com.my.Main.main(Main.java:45)

Answer 1

I know this is super old, but another fix is to add a @ResponseStatus annotation onto the controller and specify HttpStatus.NoContent as the value. This way you are accurately returning a status and don't have to say that nothing (void) is a response body.