SSM框架下mapper.xml批量插入消息SQL

xml批量插入消息:

     keyProperty ，默认值unset，用于设置getGeneratedKeys方法或selectKey子元素返回值将赋值到领域模型的哪个属性中

     resultType ，keyPropety所指向的属性类全限定类名或类型别名

     order属性 ，取值范围BEFORE|AFTER，指定是在insert语句前还是后执行selectKey操作

     statementType ，取值范围STATEMENT,PREPARED（默认值）,CALLABLE

1.传参

<insert id="insertIdIn" parameterType="java.util.List">
    <selectKey resultType="long" keyProperty="id" order="AFTER">
        SELECT
        LAST_INSERT_ID()
    </selectKey>
    insert into notification (user_id, notification_name)
    values
    <foreach collection="idList" item="userId" index="index" separator=",">
    ( #{userId}, "XXXX")
    </foreach>
</insert>

2.别的表中的数据

INSERT INTO TStudent(name,age) 
  <foreach collection="list" item="item" index="index" open="(" close=")" separator="union all">
    SELECT #{item.name} as a, #{item.age} as b FROM DUAL
  </foreach>