mybatis批量插入oracle时需要显式指定为 useGeneratedKeys="false" 不然报错~~~
正确的mybatis的mapper的sql配置如下：
1 <insert id="addList" parameterType="java.util.List" useGeneratedKeys="false">
2 INSERT ALL
3 <foreach item="item" index="index" collection="list">
4 INTO T_APPLAUD
5 (
6 ID,
7 USER_ID,
8 BUSINESS_TYPE,
9 PRODUCT_ID,
10 CREATE_TIME
11 ) VALUES
12 (
13 #{item.id, jdbcType=NUMERIC},
14 #{item.userId, jdbcType=VARCHAR},
15 #{item.businessType, jdbcType=VARCHAR},
16 #{item.productId, jdbcType=VARCHAR},
17 #{item.createdTime, jdbcType=NUMERIC}
18 )
19 </foreach>
20 SELECT 1 FROM DUAL
21 </insert>
另外一种方法是 insert into table(...) (select ... from dual) union all (select ... from dual)
1 <insert id="addList" parameterType="java.util.List" useGeneratedKeys="false">
2 INSERT INTO T_APPLAUD
3 (
4 ID,
5 USER_ID,
6 BUSINESS_TYPE,
7 PRODUCT_ID,
8 CREATE_TIME
9 )
10 <foreach item="item" index="index" collection="list" separator="union all">
11 (
12 SELECT
13 #{item.id},
14 #{item.userId},
15 #{item.businessType},
16 #{item.productId},
17 #{item.createdTime}
18 FROM DUAL
19 )
20 </foreach>
21 </insert>
原文：https://www.cnblogs.com/anyiz/p/10763744.html