org.nutz.dao.util.blob.SimpleBlob cannot be cast to oracle.sql.BLOB

 oracle.sql.BLOB blob =(BLOB) s.getZp();
                   OutputStream outStream = blob.getBinaryOutputStream();
                   File file = new File(urlpath);
                   InputStream fin = new FileInputStream(file);
                   byte[] b = new byte[1024];
                   int len = 0;
                   while ((len = fin.read(b)) != -1) {
                       outStream.write(b, 0, len);
                   }
                   outStream.flush();
                   outStream.close();
                   fin.close();
                   file.delete();