jdbc读取数据库，表相关信息（含注释）

    private Set<String> getTableNameByCon(Connection con) {
        Set<String> set = new HashSet<String>();
        try {
            DatabaseMetaData meta = con.getMetaData();
            ResultSet rs = meta.getTables(null, null, null,
                    new String[] { "TABLE" });
            while (rs.next()) {
                set.add(rs.getString(3));
            }
            con.close();
        } catch (Exception e) {
            try {
                con.close();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            e.printStackTrace();
        }
        return set;
    }

    private void getTableNotes(Connection con){
        try {
            DatabaseMetaData dbmd=con.getMetaData();
            ResultSet resultSet = dbmd.getTables(null, "%", "%", new String[] { "TABLE" });
            while (resultSet.next()) {
                String tableName=resultSet.getString("TABLE_NAME");
                String remarkes = resultSet.getString("REMARKS");
                System.out.println(tableName+"="+remarkes);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    String tableName = tableSet.getString("TABLE_NAME");
    String tableComment = tableSet.getString("REMARKS");
 
    String columnName = columnSet.getString("COLUMN_NAME");
    String columnComment = columnSet.getString("REMARKS");
    String sqlType = columnSet.getString("DATA_TYPE");