From: https://www.cnblogs.com/xiao-lei/p/6809884.html
Mybatis在插入單條數據的時候有兩種方式返回自增主鍵： mybatis3.3.1支持批量插入后返回主鍵ID,
首先對於支持自增主鍵的數據庫：useGenerateKeys和keyProperty。
不支持生成自增主鍵的數據庫：<selectKey>。
這里主要說下批量插入數據時如何返回主鍵ID(注意要將mybatis升到3.3.1)
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
public
class
UserInfo
{
private
int
userId;
private
String userName;
private
StringuserPwd;
public
long
getUserId() {
return
userId;
}
public
void
setUserId(
long
userId) {
this
.userId = userId;
}
public
String getUserName() {
return
userName;
}
public
void
setUserName(String userName) {
this
.userName = userName;
}
public
String getUserPwd() {
return
userPwd;
}
public
void
setUserPwd(String userPwd) {
this
.userPwd = userPwd;
}
}
|
Dao
|
1
|
public
interface
UserDao{
|
|
1
|
int
insertTest(List<UserInfo> userInfo);
|
|
1
|
}<br>
|
mapper
|
1
2
3
4
5
6
7
8
|
<
insert
id="insertTest" parameterType="java.util.List" useGeneratedKeys="true" keyProperty="userId">
insert into t_sys_course (user_name,user_pwd)
values
<
foreach
collection="list" item="item" index="index"
separator=",">
(#{item.userName,jdbcType=VARCHAR},#{item.userPwd,jdbcType=VARCHAR})
</
foreach
>
</
insert
>
|
serviceImpl
|
1
2
3
4
|
public
List<UserInfo> saveCheckin(List<UserInfo> userInfo) {
userDao.insertCheckin(userInfo);
return
userInfo;
}
//返回的對象List里面已經包含主鍵ID
|