FileManager/ruoyi-system/src/main/resources/mapper/system/SysRoleMenuMapper.xml

<?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.ruoyi.system.mapper.SysRoleMenuMapper">

    <resultMap type="SysRoleMenu" id="SysRoleMenuResult">
        <result property="roleId" column="role_id"/>
        <result property="menuId" column="menu_id"/>
    </resultMap>

    <insert id="batchRoleMenu">
        insert into sys_role_menu(role_id, menu_id) values
        <foreach item="item" index="index" collection="list" separator=",">
            (#{item.roleId},#{item.menuId})
        </foreach>
    </insert>

</mapper>