Processing upload requests with commons-upload

ProcessUploadRequest.java

///... somewhere in the servlet, called from doPost:
    private void processUploadRequest(HttpServletRequest request, PrintWriter pw) throws FileUploadException, IOException {
        final FileItemFactory factory = new DiskFileItemFactory();
        final ServletFileUpload upload = new ServletFileUpload(factory);
        @SuppressWarnings("unchecked")
        final List<FileItem> items = upload.parseRequest(request);
        log("LIST: " + items);
        for (FileItem item : items) {
            final String fieldName = item.getFieldName();
            if (item.isFormField()) {
                log("Got a form field: " + fieldName + " = " + item.getString());
            } else if ("log".equals(fieldName)) {
                log("Got an uploaded file: " + fieldName + ", name = " + item.getName());
                pw.println("# " + item.getName());
                final InputStream stream = item.getInputStream();
                try {
                    uploadStream(pw, stream);
                } finally {
                    stream.close();
                }
            } else {
                pw.println("ERROR: unsupported upload field:" + fieldName);
            }
        }
    }
//...