问将文件上载到S3

EN

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    boolean isMulti = ServletFileUpload.isMultipartContent(request);
    if (isMulti) {
        ServletFileUpload upload = new ServletFileUpload();

        try {
            FileItemIterator iter = upload.getItemIterator(request);
            while (iter.hasNext()) {
                FileItemStream item = iter.next();
                InputStream inputStream = item.openStream();
                if (item.isFormField()) {

                } else {
                    String fileName = item.getName();
                    if (fileName != null && fileName.length() > 0) {

                        //read stream of file uploaded

                        //store as a temporary file

                        //upload the file to s3
                    }
                }
            }
        } catch (Exception e) {
        }
    }

    response.sendRedirect("location of the result page");
}