public static SelectColumn excludes(String[] cols, String... columns) {
        return new SelectColumn(Utility.append(cols, columns), true);
    }
public static SelectColumn excludes ( String [ ] cols , String ... columns ) { return new SelectColumn ( Utility . append ( cols , columns ) , true ) ; }
class中的字段名

@param cols    排除的字段名集合
@param columns 排除的字段名集合

@return SelectColumn