struts2标签之列求和

<table width="100%" border="0" cellpadding="0" cellspacing="0" class="table_cont">

    <tr class="tr_bg">

      <th>区县</th>

      <th>预售楼数</th>

      <th>可售套数</th>

      <th>签约套数</th>

      <th>签约面积</th>

      <th>房屋均价</th>

     </tr>

    <s:set name="ysBldCount" value="0"></s:set>

     <s:set name="ysHouseCount" value="0"></s:set>

     <s:set name="ysHouseQyCount" value="0"></s:set>

     <s:set name="ysHouseQyArea" value="0"></s:set>

     <s:set name="ysHouseQyMoney" value="0"></s:set>

     <s:iterator id="distbld" value="distBldList" status="info">

           <s:if test="#index.odd==false">

    <tr class="tr_bg">

   </s:if>

   <s:else>

    <tr>

   </s:else>

  <td>${distbld.distname}</td>

  <td>${distbld.bld_num}

      <s:set name="ysBldCount" value="#ysBldCount+#distbld.bld_num"></s:set>

  </td>

  <td>${distbld.house_num}

      <s:set name="ysHouseCount" value="#ysHouseCount+#distbld.house_num"></s:set>

  </td>

  <td>${distbld.house_qy_num}

      <s:set name="ysHouseQyCount" value="#ysHouseQyCount+#distbld.house_qy_num"></s:set>

  </td>

  <td>${distbld.house_qy_area}

      <s:set name="ysHouseQyArea" value="#ysHouseQyArea+#distbld.house_qy_area"></s:set>

  </td>

  <td>${distbld.house_avg_money}

      <s:set name="ysHouseQyMoney" value="#ysHouseQyMoney+#distbld.house_avg_money"></s:set>

  </td>

  </tr>

  </s:iterator>

 <tr><td>全市</td><td>${ysBldCount} </td><td>${distbld.house_num}</td><td>${distbld.house_qy_num}</td><td>${ysHouseQyArea}</td><td>${ysHouseQyMoney}</td></tr>

  </table>

 

 

<s:set var="count" value="0" />

<s:iterator value="categories" id='i' >

<s:if test="#i.parentId != #flag">

<s:set var="count" value="#count+1" />

<s:set name="flag" value="#i.parentId" />

<tr>

<!--begin 一级类目 -->

<td><s:property value="#count"/></td>

<td>