获取自增长的id值

单个：

  <insert id="create" parameterType="com.dto.Cou" useGeneratedKeys="true" keyProperty="id">
    insert into t (
      batch_number
    ) values (
      #{batchNumber,jdbcType=VARCHAR}
    )
  </insert>

通过 对象. get获取

批量插入

  <insert id="createBatch" parameterType="java.util.List" useGeneratedKeys="true" keyProperty="id">
        insert into t (id,
          batch_number
        ) values 
        <foreach collection="list" item="item" index="index" separator=",">
          (
          null,
          #{item.batchNumber,jdbcType=VARCHAR}
           )
       </foreach>        
  </insert>

获取

cMapper.createBatch(cList);
cList.stream().forEach(cou->{
　　log.debug("cou:" + cou.getId() );
});