http client failing to call service with jearsey multipart as an argument - rest

Question

Trying to hit Jersey multipart service with httpclient, and seeing some issues. Could you please share your insights to resolve this issue. Below I posted client code, service, stack trace.
Thanks for your support.
It works good when I use below client and register classes. Not finding any facility to register these classes for http client.
javax.ws.rs.client.Client
client.register(JacksonJsonProvider.class);
client.register(MultiPartFeature.class);
CLIENT CODE:
final String CONTENT_TYPE_MULTIPART = "multipart/related";
final String CONTENT_TYPE = "application/octet-stream";
final String BOUNDARY = "--upload_boundary--";
String responseStr = "";
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
multipartEntityBuilder.addBinaryBody("file_upload", inputStream, ContentType.create(CONTENT_TYPE), "filename");
HttpPost httpPost = new HttpPost(finalURL);
httpPost.setHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE_MULTIPART);//+";type="+CONTENT_TYPE+";boundary="+BOUNDARY);
httpPost.setEntity(multipartEntityBuilder.build());
CloseableHttpResponse response = null;
try {
response = httpclient.execute(httpPost);
HttpEntity entity = response.getEntity();
responseStr = entity.toString();
RestHelper.verifyResponse(response, responseStr);
} catch (ClientProtocolException e) {
LOGGER.error("ClientProtocolException during upload",e);
} catch (IOException e) {
LOGGER.error("IOException during upload",e);
} finally {
response.close();
httpclient.close();
}
REST SERVICE:
#Consumes(MULTIPART_RELATED)
public String addDocument(MultiPart multipart)
STACKTRACE:
httpResponse :::::::::::::::::::: HttpResponseProxy{HTTP/1.1 400 Bad Request [Content-Type: text/html;charset=ISO-8859-1, $WSEP: , Content-Language: en-US, Transfer-Encoding: chunked, X-Cnection: Close, Date: Mon, 10 May 2021 11:50:32 GMT, Set-Cookie: dev-issapps.us=2036276652.6195.0000; path=/; Httponly] ResponseEntityProxy{[Content-Type: text/html;charset=ISO-8859-1,Chunked: true]}}
17:20:32.220 [main] ERROR us.dc.httpproxy.RestHelper - Response Error: RestException{us.dc.httpproxy.RestException
: HTTP/1.1 400 Bad Request', statusCode=400, detail='ResponseEntityProxy{[Content-Type: text/html;charset=ISO-8859-1,Chunked: true]}'}
17:20:32.221 [main] ERROR us.dc.httpproxy.RestClient - Exception in executeMultiPartRequest http://XXXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXX/api/applications/GWEW/documents
RestException{ us.dc.httpproxy.RestException: HTTP/1.1 400 Bad Request', statusCode=400, detail='ResponseEntityProxy{[Content-Type: text/html;charset=ISO-8859-1,Chunked: true]}'}

Answer 1

Here is the solution, hope it helps somebody:
compile group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.13'
compile group: 'org.apache.httpcomponents', name: 'httpmime', version: '4.5.3'
try (CloseableHttpClient httpclient = HttpClients.createDefault()) {
File file = new File("src/main/resources/48-1.jpg");
MultipartEntityBuilder entitybuilder = MultipartEntityBuilder.create();
entitybuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
entitybuilder.addBinaryBody("image", new FileInputStream(file), ContentType.APPLICATION_OCTET_STREAM, file.getName());
entitybuilder.setContentType(ContentType.create("multipart/related"));
HttpEntity mutiPartHttpEntity = entitybuilder.build();
RequestBuilder reqbuilder = RequestBuilder.post(url);
reqbuilder.setEntity(mutiPartHttpEntity);
HttpUriRequest multipartRequest = reqbuilder.build();
HttpResponse httpresponse = httpclient.execute(multipartRequest);
System.out.println("response status = " + httpresponse.getStatusLine().getStatusCode());
System.out.println("filenet id = " + EntityUtils.toString(httpresponse.getEntity()));
}catch(Exception e) {
e.printStackTrace();
}