mybatis froeach循环报错?报错

mybatis xml:

<select id="getList" parameterType="list" resultMap="BaseResultMap">
    select * from tbl 
    <where>
      and id in 
      <foreach collection="list" item="item" open="(" 
           separator="," close=")">
           #{item}
      </foreach>
    </where>
</select>


java :

List<Long> idlist = new ArrayList<Long>();
idlist.add(1L);
idlist.add(21L);
List<vo> l = dao.selectList("getList", idlist);  

ERROR:
org.apache.ibatis.binding.BindingException: Parameter 'needMeta' not found. Available parameters are [collection,list]  

mybatis froeach 为什么会报错？哪里写错了吗？