Mybatis在插入单条数据的时候有两种方式返回自增主键： mybatis3.3.1支持批量插入后返回主键ID,java
首先对于支持自增主键的数据库：useGenerateKeys和keyProperty。数据库
不支持生成自增主键的数据库：<selectKey>。mybatis
这里主要说下批量插入数据时如何返回主键ID(注意要将mybatis升到3.3.1)app
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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;
}
}
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Dao post
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public
interface
UserDao{
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int
insertTest(List<UserInfo> userInfo);
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}<br>
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mapperthis
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<
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
>
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serviceImplspa
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public
List<UserInfo> saveCheckin(List<UserInfo> userInfo) {
userDao.insertCheckin(userInfo);
return
userInfo;
}
//返回的对象List里面已经包含主键ID
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