Struts标签中截取内容

有的时候需要显示的内容过长，需要截取。例子如下：

<s:iterator value="data.datas" var="d" status="st">
        <tr align="center">
         <td>
          <input style="width: 30px" type="checkbox"
           value="<s:property value="#d.num" />" />
         </td>
         <td>
               <s:property value="#d.num" />
         </td>
         <td>
              <s:if test="#d.name.length()>10">
                  <s:property value="#d.name.substring(0,10)+'.......' " />
              </s:if>
              <s:else>
                  <s:property value="#d.name" />
             </s:else>
        </tr>
 </s:iterator>