使用jpa hql语句查询关联多个表 如何用struts的iterator接受显示数据

service:select s,o from student s,order o wher s.id = o.id

getResultList();

action:接受并返回List ps

jsp：

 <s:iterator value="ps" status="lc" id="list">
      <tr>
       <td>
        <s:property value="%{#list[0].name}"/>
       </td>
       <td>
        <s:if test="#list[0].sex==1">男</s:if>
        <s:elseif test="#list[0].sex==2">女</s:elseif>
       </td>

       <td>
      <s:set name="constatus" value="%{#list[1].status}"/>
      <s:if test="#constatus==1">a</s:if>
      <s:if test="#constatus==2">b</s:if>
      <s:if test="#constatus==3">c</s:if>

     </td>
     <td>
     </tr>
   </s:iterator>