struts2 迭代多层Map

 //struts2 迭代多层Map

     <s:iterator var="styChlRel" value="#request.styChlRelList">
     <tr>
       <td height="0"><s:property value="#styChlRel.CHANNELNAME"/></td>
      <td height="25px">
             <s:iterator var="interactionWay" value="#request.channelMap.get(#styChlRel.CHANNELID).interactionWayList">
              <input type="checkbox" value="<s:property value="#interactionWay.INTERACTIONWAYID"/>"/>
              <s:property value="#interactionWay.INTERACTIONWAYNAME"/>
             </s:iterator>
            </td>

     </tr>
         
     </s:iterator>