post - RestTemplate upload image as MultipartFile with Content-Type image/jpg -

i trying upload image (multipartfile) using resttemplate server url. sending request postman works content-type: image/jpg , image sent binary file body.

method implementation in springboot:

public responseentity<string> uploadimage(multipartfile file) {     resttemplate.getmessageconverters().add(new bytearrayhttpmessageconverter());     resttemplate.getmessageconverters().add(new bufferedimagehttpmessageconverter());      linkedmultivaluemap<string,object> params = new linkedmultivaluemap<>();     params.add("file", new filesystemresource(file));     httpheaders httpheaders = new httpheaders();     httpheaders.setcontenttype(mediatype.image_jpeg);     httpentity<linkedmultivaluemap<string, object>> requestentity = new httpentity<>(params, httpheaders);      return resttemplate.exchange(upload_url, httpmethod.post, requestentity, string.class); 

exception:

org.springframework.web.client.restclientexception: not write request: no suitable httpmessageconverter found request type [org.springframework.util.linkedmultivaluemap] , content type [image/jpeg] 

upload works content-type mediatype.multipart_form_data rest service use accepts image/jpg http content-type.

thanks.