An example of putting a file onto a datastore...

putFiles_sample.java

    @SuppressWarnings("unchecked")
    void putVMFiles(String remoteFilePath, String localFilePath)
            throws Exception {
        String url = connection.getUrl();
        String serviceUrl = url.substring(0, url.lastIndexOf("sdk") - 1);
        String httpUrl =
                serviceUrl + "/folder" + remoteFilePath + "?dcPath=" + datacenter
                        + "&dsName=" + datastore;
        httpUrl = httpUrl.replaceAll("\\ ", "%20");
        System.out.println("Putting VM File " + httpUrl);
        URL fileURL = new URL(httpUrl);
        HttpURLConnection conn = (HttpURLConnection) fileURL.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setAllowUserInteraction(true);

        // Maintain session
        List<String> cookies = (List<String>) headers.get("Set-cookie");
        cookieValue = cookies.get(0);
        StringTokenizer tokenizer = new StringTokenizer(cookieValue, ";");
        cookieValue = tokenizer.nextToken();
        String path = "$" + tokenizer.nextToken();
        String cookie = "$Version=\"1\"; " + cookieValue + "; " + path;

        // set the cookie in the new request header
        Map<String, List<String>> map = new HashMap<String, List<String>>();
        map.put("Cookie", Collections.singletonList(cookie));
        ((BindingProvider) vimPort).getRequestContext().put(
                MessageContext.HTTP_REQUEST_HEADERS, map);

        conn.setRequestProperty("Cookie", cookie);
        conn.setRequestProperty("Content-Type", "application/octet-stream");
        conn.setRequestMethod("PUT");
        conn.setRequestProperty("Content-Length", "1024");
        long fileLen = new File(localFilePath).length();
        System.out.println("File size is: " + fileLen);
        conn.setChunkedStreamingMode((int) fileLen);
        OutputStream out = conn.getOutputStream();
        InputStream in =
                new BufferedInputStream(new FileInputStream(localFilePath));
        int bufLen = 9 * 1024;
        byte[] buf = new byte[bufLen];
        byte[] tmp = null;
        int len = 0;
        while ((len = in.read(buf, 0, bufLen)) != -1) {
            tmp = new byte[len];
            System.arraycopy(buf, 0, tmp, 0, len);
            out.write(tmp, 0, len);
        }
        in.close();
        out.close();
        conn.getResponseMessage();
        conn.disconnect();
    }