struts2 タグ iteratorの中、if testで比較

do s:if test of a value in the iterator

<select name="product">

<s:iterator value="#session.productList" >

<s:if test="%{selected_code == code}">

<option value="<s:property value='code'/>" selected="selected"><s:property value='name'/></option>

</s:if>

<s:else>

<option value="<s:property value=' code '/>"><s:property value=' name '/></option>

</s:else>

</s:iterator>

</select>