jsp – 检查struts 2标记中arraylist中的stat.count值

<% System.out.println("These indexed shall be shown on gui "+(ArrayList)request.getSession().getAttribute("selectedIndexes")); %>   // ArrayList value can be 2,3,5,9

  <s:iterator var="itr" value="#session.completeArrayList" status="stat">
 <s:if > //if stat.count value present in arraylist(selectedIndexes), then go to if loop
 </s:if

</s:iterator>

我不知道如何检查< s中的arraylist {selectedIndexes}中的％{#stat.count}值：if>环.
我该怎么做

<s:iterator var="itr" value="#session.completeArrayList" status="stat">
  <s:if test="#stat.count in #session.selectedIndexes">
  </s:if
</s:iterator>