获取database所有table名：
（参考：http://stackoverflow.com/questions/2780284/how-to-get-all-table-names-from-a-database ）
DatabaseMetaData md = conn.getMetaData();ResultSet rs = md.getTables(null, null, "%", null);while (rs.next()) { System.out.println(rs.getString(3));}
原理：Column 3 is the TABLE_NAME (see documentation of getTables).
获取某table的所有字段名：
(参考：http://java.dzone.com/snippets/listing-schematablecolumn )
DatabaseMetaData meta = conn.getMetaData();ResultSet resultSet = meta.getColumns(databaseName, null, tableName, "%");while (resultSet.next()) { System.out.println(esultSet.getString(4));}