jsf - Prime faces Export data not working -


i tried export data datatable when press pdf button example refresh page without export 

   <h:commandlink  >         <p:graphicimage value="/images/excel.png" />         <p:dataexporter type="xls" target="datatable" filename="alarms" />     </h:commandlink>      <h:commandlink  >         <p:graphicimage value="/images/pdf.png" />         <p:dataexporter type="pdf" target="datatable"  filename="alarms"/>     </h:commandlink>        <h:commandlink  >         <p:graphicimage value="/images/csv.png" />         <p:dataexporter type="csv" target="datatable" filename="alarms" />     </h:commandlink>

<p:commandlink> has surrounded <h:form> tag work. if not problem can please provide source code of whole page , primefaces version working with?


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