jdbc得到数据库的元数据

public static void getDatabaseMetaData(Connection con) {
     try {
        java.sql.DatabaseMetaData dbmd = con.getMetaData();
        System.out.println("dbmd:driver version = " + dbmd.getDriverVersion());
        System.out.println("dbmd:driver name = " + dbmd.getDriverName());
        System.out.println("db name = " + dbmd.getDatabaseProductName());
        System.out.println("db ver = " + dbmd.getDatabaseProductVersion());
        System.out.println("db tx = " + dbmd.supportsTransactions());
     }
     catch (Exception e) {
        e.printStackTrace();
     }
 }