从配置信息取比较好

有倒是有些办法

dao.run(new ConnCallback() {
            public void invoke(Connection conn) throws Exception {
                try {
                    DatabaseMetaData dmd = conn.getMetaData();
                    meta.setProductName(dmd.getDatabaseProductName());
                    meta.setVersion(dmd.getDatabaseProductVersion());
                    log.debug("JDBC Driver --> " + dmd.getDriverVersion());
                    log.debug("JDBC Name   --> " + dmd.getDriverName());
                    if (!Strings.isBlank(dmd.getURL()))
                        log.debug("JDBC URL    --> " + dmd.getURL());
                }
                catch (Exception e) {
                    log.info("something wrong when checking DataSource", e);
                }
            }
        });

这很正常...