Spring’s RestTemplate

/** * After the word document is generated in memory we can upload it to the server. * * @param fileContents The byte array we're wanting to POST * @param filename     The name of the file you're uploading. You can make yours up if you want. */private static void uploadWordDocument(byte[] fileContents, final String filename) {    RestTemplate restTemplate = new RestTemplate();    String fooResourceUrl = "http://localhost:8080/spring-rest/foos"; // Dummy URL.    MultiValueMap
     
       map = new LinkedMultiValueMap
      
       ();    map.add("name", filename);    map.add("filename", filename);    // Here we     ByteArrayResource contentsAsResource = new ByteArrayResource(fileContents) {        @Override        public String getFilename() {            return filename; // Filename has to be returned in order to be able to post.        }    };    map.add("file", contentsAsResource);    // Now you can send your file along.    String result = restTemplate.postForObject(fooResourceUrl, map, String.class);        // Proceed as normal with your results.}