* Reads the {@link FileInfo}data from request using the {@link MultipartWrapper}.
*/
protected void readFromRequest(String controlName, HttpServletRequest request) {
OutputData output =
(OutputData) request.getAttribute(StandardServletServiceAdapterComponent.OUTPUT_DATA_REQUEST_ATTRIBUTE);
ServletFileUploadOutputExtension fileUpload =
(ServletFileUploadOutputExtension) output.narrow(ServletFileUploadOutputExtension.class);
if (fileUpload.getUploadedFile(controlName)!= null) {
FileItem file = fileUpload.getUploadedFile(controlName);
String mimeType = file.getContentType();
if (permittedMimeFileTypes == null || permittedMimeFileTypes.contains(mimeType)) {
innerData = new FileInfo(file);