select count(1) from sys_role_menu where menu_id = #{menuId} delete from sys_role_menu where role_id=#{roleId} delete from sys_role_menu where role_id in #{roleId} insert into sys_role_menu(role_id, menu_id) values (#{item.roleId},#{item.menuId}) delete from sys_role_menu where role_id = #{roleId} and menu_id in #{item}