How can i create this table example with Primefaces p:dataTable? - jsf

Question

I have a table in JSF Page:
<table cellpadding="0" cellspacing="0" border="1" align="center">
<col width="300"/>
<col width="150"/>
<col width="150" span="3"/>
<thead>
<tr>
<th rowspan="3" > </th>
<th rowspan="3" >A</th>
<th colspan="3" >B</th>
</tr>
<tr>
<th colspan="2">C</th>
<th rowspan="2">D</th>
</tr>
<tr>
<th>E</th>
<th>F</th>
</tr>
</thead>
<tbody>
<c:forEach items="${indexbean.regions}" var="r">
<tr>
<td colspan="5" >#{r.region}</td>
</tr>
<c:forEach items="${indexbean.table_data}" var="s">
<c:if test="${s.reg eq r.region}">
<tr>
<td>#{s.rowname}</td>
<td>#{s.d1}</td>
<td>#{s.d2}</td>
<td>#{s.d3}</td>
<td>#{s.d4}</td>
</tr>
</c:if>
</c:forEach>
</c:forEach>
</tbody>
</table>
These codes work properly. But i want to use primefaces p:dataExporter (for download this table as Excel), that is why i must create this table with p:dataTable. I can't find solution what i can replace 2 forEach method in p:dataTable.
How can i create this table with Primefaces p:dataTable? Please, help me.