mybatis批量插入oracle解决方法

<insert id="insertBatch" parameterType="ArrayList" >

<!-- <selectKey keyProperty="signal_id" order="BEFORE" resultType="int">

SELECT signal_sequence.NEXTVAL FROM DUAL

</selectKey>

-->

INSERT INTO signal(id , name , address) SELECT
signal_sequence.NEXTVAL , A.* FROM (

<foreach collection="list" item="item" index="index" separator="UNION">

SELECT #{item.name} , #{item.address}
FROM DUAL

</foreach>

) A

</insert>