关于数据库读不到第一条数据

try {
conn = DBUtil.getConnection();
stmt = conn.prepareStatement(sql);
stmt.setInt(1, userid);
rs = stmt.executeQuery();


// System.out.println(rs.next());这句执行后会把第一条数据跳过
while (rs.next()) {


int id = rs.getInt(1);
int Haoyouid = rs.getInt(2);
String beizhu = rs.getString(3);
int Fenzuid = rs.getInt(4);
Haoyous.add(new Haoyou(id, Haoyouid, beizhu, Fenzuid));
}