Resttemplate not working if there is bad request

I am trying to send bad request from spring boot rest for validation error. Below is my method

public ResponseEntity<?> getMyData(@Valid @ModelAttribute InputParms ipParms,BindingResult bindingResult ) {

MyObject obj=new MyObject ();

if(bindingResult.hasErrors()) {
return ResponseEntity.status(400).body(obj);
}

//my other code

}


On client side I have something like below. But it is throwing exception and code is not even reaching if block.

ResponseEntity<MyObject > resultResp=restTemplate.postForEntity(url,inputParam, MyObject .class);
if(resultResp.getStatusCode().equals(HttpStatus.OK)) {
//my success code
}else {
//my bad response code
}


In the same code if i send status 200, it is working. What is I am doing wrong here.

1 Answer
1

By default RestTemplate will throw an exception on a 4xx error. Instead of checking for the status code in the ResponseEntity, wrap the call in a subclass of RestClientException, for example:

RestClientException

try {
ResponseEntity<MyObject> resultResp = restTemplate.postForEntity(url,inputParam, MyObject .class);
} catch (HttpStatusCodeException e) {
System.out.println("Error from server: " + e.getStatusCode() + " - " + e.getResponseBodyAsString());
}


You could even catch HttpClientErrorException or HttpServerErrorException separately and handle errors differently for a 4xx and a 5xx error.

HttpClientErrorException

HttpServerErrorException

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