使用tapestry时如何获得循环的次序号?
<tr jwcid="@Foreach" source="ognl:columns" value="ognl:column" element="literal:tr">
<td class="tableBody1">
<span jwcid="@Insert" value="ognl:column.id"></span></td>
<td class="tableBody1">
<span jwcid="@Insert" value="ognl:column.name">tableName</span></td>
<td class="tableBody1">
<span jwcid="@Insert" value="ognl:column.type.name">tableName</span></td>
</tr>
在循环时候如何显示循环的id号啊?