docs: public static DocumentBuilder createDocumentBuilder() {
  		final DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
  		disableXXE(dbf);
  		DocumentBuilder builder = null;
  		try {
  			builder = dbf.newDocumentBuilder();
  		} catch (Exception e) {
  			throw new UtilException(e, "Create xml document error!");
  		}
  		return builder;
  	}