for (int i = 0; i <5 i++) { Items item = new Items(); System.out.println(Integer.parseInt(s1[i])); stmt.setInt(1, Integer.parseInt(s1[i])); rs = stmt.executeQuery(); while (rs.next()) { item.setId(rs.getInt("id")); item.setName(rs.getString("name")); item.setCity(rs.getString("city")); item.setNumber(rs.getInt("number")); item.setPrice(rs.getInt("price")); item.setPicture(rs.getString("picture")); list.add(item); }當(dāng)我把Items對(duì)象放到for循環(huán)上時(shí)（如下），獲得的list對(duì)象里五個(gè)item都是一樣的。為什么會(huì)這樣啊。。。????????????????????????????????????????Items item = new Items(); for (int i = 0; i <s1.length-1; i++) { System.out.println(Integer.parseInt(s1[i])); stmt.setInt(1, Integer.parseInt(s1[i])); rs = stmt.executeQuery(); while (rs.next()) { item.setId(rs.getInt("id")); item.setName(rs.getString("name")); item.setCity(rs.getString("city")); item.setNumber(rs.getInt("number")); item.setPrice(rs.getInt("price")); item.setPicture(rs.getString("picture")); list.add(item); }
1 回答
已采納
qq_原來這就是來自北方的漢子_03305421
TA貢獻(xiàn)10條經(jīng)驗(yàn) 獲得超1個(gè)贊
for(){
while (rs.next()) {
?item = new Items();
//....
list.add(item);
}
}
-
iMcLaren謝謝解答哈。后來回頭又看了一遍java 面向?qū)ο蟮膬?nèi)容。。已經(jīng)解決了這個(gè)疑問。還是要多看書啊~
添加回答
舉報(bào)
0/150
提交
取消