/** * Returns the content type of the specified file (as supplied by the client browser), or null if * the file was not included in the upload. * * @param name the html page's file parameter name. * @return the content type of the file. */ public String getContentType(String name) { try { UploadedFile file = (UploadedFile) files.get(name); return file.getContentType(); // may be null } catch (Exception e) { return null; } }