mybatis批量insert

@RequestMapping("/findUserByIdAndAllRole.do")
    public ModelAndView findUserByIdAndAllRole(@RequestParam(name = "id",required = true) int userid){
        ModelAndView mv = new ModelAndView();
        //查询userid对应的对象
        Users user = usersService.findById(userid);
        //根据userid查询当前用户没有的角色信息
        List<Role> otherRoles = usersService.findOtherRoles(userid);
        mv.addObject("user",user);
        mv.addObject("roleList",otherRoles);
        mv.setViewName("user-role-add");
        return mv;
    }

<select id="findById" resultMap="userRolePermissionMap">
        select u.*,r.id as rid,r.rolename,r.roleDesc,p.permissionName,p.url from users u
         LEFT OUTER JOIN users_role ur on u.id = ur.userId
         LEFT OUTER JOIN role r on r.id = ur.roleId
         LEFT OUTER JOIN role_permission rp on rp.roleId = r.id
         LEFT OUTER JOIN permission p  on p.id = rp.permissionId
        where u.id = #{id}
    </select>
    <select id="findOtherRoles" parameterType="int" resultType="com.hengheng.domain.Role">
        select * from role where id not in (select roleid from users_role where userId = #{userid})
    </select>

@RequestMapping("/addRoleToUser.do")
    public String addRoleToUser(@RequestParam(name = "userId")int userid,@RequestParam(name = "ids")int[] ids){

        usersService.addRoleToUser(userid,ids);


        return "redirect:findAll.do";
    }

public interface IUsersDao {
    public Users findByUserName(String username);

    public List<Users> findAll();

    public void save(Users user);
    public Users findById(int id);
    public List<Role> findOtherRoles(int userid);

    void addRoleToUser(@Param("map") Map<Integer, Integer> map);
    void addRoleToUser(@Param("userid") int userid,@Param("ids")int[] ids);
}

 <insert id="addRoleToUser" >
        insert into users_role(userId, roleId) VALUES
        <foreach collection="ids" index="index" item="item" separator=",">
            (#{userid},#{item})
        </foreach>
    </insert>