mybatis 批量保存，并且唯一约束

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.qingclass.delta.modules.customer.dao.WxProDepartmentDao">

    <!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity" id="wxProDepartmentMap">
        <result property="departId" column="depart_id"/>
        <result property="departName" column="depart_name"/>
        <result property="departNameEn" column="depart_name_en"/>
        <result property="departPid" column="depart_pid"/>
        <result property="order" column="order"/>
        <result property="createTime" column="create_time"/>
        <result property="updateTime" column="update_time"/>
    </resultMap>

    <select id="queryObject" resultType="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity">
        select * from wx_pro_department where depart_id = #{value}
    </select>

    <select id="queryList" resultType="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity">
        select * from wx_pro_department
        <choose>
            <when test="sidx != null and sidx.trim() != ‘‘">
                order by ${sidx} ${order}
            </when>
            <otherwise>
                order by depart_id desc
            </otherwise>
        </choose>
        <if test="offset != null and limit != null">
            limit #{offset}, #{limit}
        </if>
    </select>
    
     <select id="queryTotal" resultType="int">
        select count(*) from wx_pro_department 
    </select>
     
    <insert id="save" parameterType="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity" useGeneratedKeys="true" keyProperty="id">
        insert into wx_pro_department
        (
            `depart_id`, 
            `depart_name`, 
            `depart_name_en`, 
            `depart_pid`, 
            `order`
        )
        values
        (
            #{departId}, 
            #{departName}, 
            #{departNameEn}, 
            #{departPid}, 
            #{order}
        )
    </insert>

    <insert id="saveBatch" parameterType="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity">
        insert into wx_pro_department
        (
            `depart_id`,
            `depart_name`,
            `depart_name_en`,
            `depart_pid`,
            `order`
        )
        values
        <foreach collection="list" item="item" separator=",">
        (
            #{item.departId},
            #{item.departName},
            #{item.departNameEn},
            #{item.departPid},
            #{item.order}
        )
        </foreach>
        ON DUPLICATE KEY UPDATE
        depart_name = values(depart_name),
        depart_pid = values(depart_pid), `order` = values(`order`)
    </insert>
     
    <update id="update" parameterType="com.qingclass.delta.modules.customer.entity.WxProDepartmentEntity">
        update wx_pro_department 
        <set>
            <if test="departName != null">`depart_name` = #{departName}, </if>
            <if test="departNameEn != null">`depart_name_en` = #{departNameEn}, </if>
            <if test="departPid != null">`depart_pid` = #{departPid}, </if>
            <if test="order != null">`order` = #{order} </if>
        </set>
        where depart_id = #{departId}
    </update>
    
    <delete id="delete">
        delete from wx_pro_department where depart_id = #{value}
    </delete>

    <delete id="deleteAll">
        delete from wx_pro_department where depart_id = depart_id
    </delete>
    
    <delete id="deleteBatch">
        delete from wx_pro_department where depart_id in 
        <foreach item="departId" collection="array" open="(" separator="," close=")">
            #{departId}
        </foreach>
    </delete>

</mapper>