resttemplate 파일 다운로드 예제

RestTemplate restTemplate = new RestTemplate();

ResponseEntity<byte[]> response = null;

response = restTemplate.exchange(url, HttpMethod.GET, null, byte[].class);


InputStream is = new ByteArrayInputStream(response.getBody());

InputStreamResource resource = new InputStreamResource(is);

ResponseEntity responseEntity = ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=" + fileName)
.body(resource);

return responseEntity;