MyBatis设置主键回填

单条插入

useGeneratedKeys设置为true，keyProperty为要回填的属性名

<insert id="insertBook" useGeneratedKeys="true" keyProperty="id">
    insert into t_book (b_name,author) values (#{name},#{author});
</insert>

批量插入

int batchInsert(@Param("list") List<CarSourceFollow> carSourceFollowList);

注意：foreach标签中collection的名字必须为list，不然不会回填成功

<insert id="batchInsert" parameterType="list" useGeneratedKeys="true" keyProperty="id">
  insert into car_source_follow (car_source_id, user_id, follow_type, follow_progress, content, img_link) values
  <foreach collection="list" item="item" separator=",">
    (#{item.carSourceId}, #{item.userId}, #{item.followType}, #{item.followProgress}, #{item.content}, #{item.imgLink})
  </foreach>
</insert>