起因:

mybatis 传入set集合对象报
### Error updating database.  Cause: java.lang.UnsupportedOperationException
### Cause: java.lang.UnsupportedOperationException

代码

  /**
     * 批量新增
     * @param tbHuidous
     * @return
     */
    int insertTbHuidouRecordsBatch(Set<TbHuidou> tbHuidous);

 <insert id="insertTbHuidouRecordsBatch" parameterType="java.util.Set" useGeneratedKeys="false">
        insert into DZHMONITOR.tb_huidou_records(
        rid,
        hid,
        create_time,
        update_time,
        is_delete
        )
        select DZHMONITOR.SEQ_HUIDOU_RECORDS.nextval as rid,A.* from(
        <foreach collection="set" item="item" index="index"
                 separator="UNION ALL">
            SELECT
            #{item.hid,jdbcType=VARCHAR} as hid,sysdate as  create_time,sysdate as update_time,0 as is_delete
            FROM DUAL
        </foreach>
        ) A
    </insert>

解决办法在接口加入 @Param("set") 需要指定下参数名对应collection=“set”

  /**
     * 批量新增
     * @param tbHuidous
     * @return
     */
    int insertTbHuidouRecordsBatch(@Param("set") Set<TbHuidou> tbHuidous);