RestTemplate postForObject response getting truncated - string

Question

Trying to fetch the response using spring web client, but the result response is getting truncated as the response size is more than that of string class. Is there any other way to get the response without being truncated?
LinkedMultiValueMap<String, Object> requestMap = new LinkedMultiValueMap<String, Object>();
//String response = "";
try{
File tempFile = File.createTempFile("ccda", "File");
FileOutputStream out = new FileOutputStream(tempFile);
IOUtils.copy(ccdaFile.getInputStream(), out);
requestMap.add("ccdaFile", new FileSystemResource(tempFile));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity =
new HttpEntity<LinkedMultiValueMap<String, Object>>(requestMap, headers);
RestTemplate restTemplate = new RestTemplate();
FormHttpMessageConverter formConverter = new FormHttpMessageConverter();
formConverter.setCharset(Charset.forName("UTF8"));
restTemplate.getMessageConverters().add(formConverter);
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
String response = restTemplate.postForObject("localhost:8080",
requestEntity, String.class);
tempFile.delete();
}catch(Exception exc)
{
exc.printStackTrace();
}

Answer 1

You may use an InputStream
I think you may do in this way:
InputStream is = rt.execute("localhost:8080", HttpMethod.POST, requestCallback, responseExtractor);
Where requestCallback is an implementation of org.springframework.web.client.RequestCallback like this one
public class MyRequestCallback implements RequestCallback
{
#Override
public void doWithRequest(ClientHttpRequest request) throws IOException
{
request.getHeaders().add(HttpHeaders.CONTENT_TYPE, MimeTypeUtils.APPLICATION_JSON_VALUE);
request.getHeaders().add(HttpHeaders.ACCEPT, MimeTypeUtils.APPLICATION_JSON_VALUE);
}
}
While responseExtractor may by an instance of this class
public class MyResponseExtractor implements ResponseExtractor<InputStream>
{
#Override
public Boolean extractData(ClientHttpResponse response) throws IOException
{
HttpStatus status = response.getStatusCode();
switch (status)
{
case OK:
return response.getBody();
default:
return null;
}
}
}
Once obtained the InputStream you can manage it
Hope it is usefull