当经常使用特殊字符分割时，在使用StringTokenizer和使用 split中进行考虑时，应使用split，StringTokenizer是遗留方法，为了支持较早版本。

StringTokenizer tok = new StringTokenizer(jdbcDrivers, ",");
        while (tok.hasMoreTokens()) {
            String jdbcDriver = tok.nextToken();
            if (loadedDrivers.add(jdbcDriver)) {
                try {
                    Class.forName(jdbcDriver);
                    LOGGER.info(
                        "Mondrian: JDBC driver "
                        + jdbcDriver + " loaded successfully");
                } catch (ClassNotFoundException e) {
                    LOGGER.warn(
                        "Mondrian: Warning: JDBC driver "
                        + jdbcDriver + " not found");
                }
            }
        }
    }