gihon-component/common-springboot/src/main/resources/mapper/UserInfoMapper.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.gihon.user.mapper.UserMapper">

	<!--<select id="selectByUsername" resultType="com.gihon.user.entity.User">-->
	<!--	select id, username, password from tb_user where username = #{username}-->
	<!--</select>-->
	<insert id="insertRolestoUser">
		insert into tb_user_role(user_id,role_id) values
		<!--item就是List里每一项的对象名，要用","分割每一条数据，最后要";"结尾-->
		<foreach collection="roleIds" item="roleId" separator="," close=";">
			(#{userid},#{roleId})
		</foreach>
	</insert>
</mapper>