nettyRequest.headers().add(HttpHeaders.Names.CONTENT_TYPE, request.getBody().getContentType().toString());
HttpPostRequestDecoder decoder = new HttpPostRequestDecoder(nettyRequest);
HttpContent content = new DefaultHttpContent(requestBody.getBuffer());
decoder.offer(content);
decoder.offer(LastHttpContent.EMPTY_LAST_CONTENT);
Map<String, List<String>> attributes = new LinkedHashMap<>();
Map<String, List<UploadedFile>> files = new LinkedHashMap<>();