MyBatis报错：there is no getter for property named * in class java.lang.String ​

<select
  id="getRolesListByAgentmechId"
  parameterType="java.lang.String"
  resultType="java.util.Map"
>
  select DISTINCT a.ROLE_ID AS ROLEID, C.USER_ID AS USERID from
  TL_MANAGE_RIGHT_DATA a left join TL_MANAGE_USER_ROLE B ON A.ROLE_ID=B.ROLE_ID
  LEFT JOIN TL_MANAGE_USER c on B.USER_ID = C.USER_DEPID where a.ROLE_ID not
  in(1)
  <if test="agentmechId != '' and agentmechId != null">
    and a.NUM_AGENTMECHID in (${agentmechId})
  </if>
</select>

<select
  id="getRolesListByAgentmechId"
  parameterType="java.lang.String"
  resultType="java.util.Map"
>
  select DISTINCT a.ROLE_ID AS ROLEID, C.USER_ID AS USERID from
  TL_MANAGE_RIGHT_DATA a left join TL_MANAGE_USER_ROLE B ON A.ROLE_ID=B.ROLE_ID
  LEFT JOIN TL_MANAGE_USER c on B.USER_ID = C.USER_DEPID where a.ROLE_ID not
  in(1)
  <if test="_parameter != null and _parameter != ''">
    and a.NUM_AGENTMECHID in (${_parameter})
  </if>
</select>