為什么這里的ResultSet不用While循環(huán)?我還用循環(huán)去遍歷,結(jié)果少了第一條數(shù)據(jù)

jdbcTemplate.query(sql,?new?RowCallbackHandler()?{
????@Override
????public?void?processRow(ResultSet?resultSet)?throws?SQLException?{
????????????????int?id=resultSet.getInt("id");
????????????????String?name=resultSet.getString("name");
????????????????int?age=resultSet.getInt("age");

????????????????Student?student=new?Student(id,name,age);
????????????????list.add(student);
????}
});