title: Export xls.sheet into a groups of pages, iReport java
body: <p>I wan't to export a Jasper Report to Pdf &amp; Excel.</p>
  
  <ol>
  <li>When the export type is PDF : i need the pagination of document to
  be ignored.</li>
  <li>When the type id EXcel :  i need even page on an excel sheet and rename these sheet's by the label of the un-repeated group.</li>
  </ol>