/**
     * 根据url获取库名
     * @param url
     * @return
     */
    public static String getLibname(String url) {
        Pattern p = Pattern.compile("jdbc:(?<db>\\w+):.*((//)|@)(?<host>.+):(?<port>\\d+)(/|(;DatabaseName=)|:)(?<dbName>\\w+)\\??.*");
        Matcher m = p.matcher(url);
        if(m.find()) {
            return m.group("dbName");
        }
        return null;
    }