Map键值对，一种思路

Map键值对

private void addColumn(Map<String, Column> mapColumn, Column column) {
        String key = column.getField() + column.getLabel() + column.getType() + column.getLength();
        if (!mapColumn.containsKey(key)) {
            mapColumn.put(key, column);
        } else {
            mapColumn.get(key).setTableName(mapColumn.get(key).getTableName() + "," + column.getTableName());
        }
    }