2-6,通过id查询女神信息的这个代码怎么跟上一节的对不上啊

public List<Goddess> query() throws Exception {

Connection conn = DBUtil.getConnection();

Statement stmt = conn.createStatement();

ResultSet rs = stmt

.executeQuery("select user_name,age from imooc_goddess");

List<Goddess> gs = new ArrayList<Goddess>();

Goddess g = null;

while (rs.next()) {

g = new Goddess();

// String username=rs.getString("user_name");

// g.setUserName(username);

g.setUser_name(rs.getString("user_name"));

g.setAge(rs.getInt("age"));

gs.add(g);

}

return gs;

}