I got these error message while click the export button in the sever. I can't convert that table.
I used primeface 5.0 and netbeans 8.0.2 version and GlassFish server 4.1
How can i solve this problem?
This is my home.xhtml file.
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<h:form>
<p:dataTable value="#{linkController.links}" var="lis" rowKey="#{lis.link_id}" selectionMode="single" id="tbl">
<p:column headerText="Id">
<f:facet name="header"></f:facet>
#{lis.link_id}
</p:column>
<p:column headerText="name">
#{lis.link_name}
</p:column>
<p:column headerText="date">
#{lis.date}
</p:column>
<p:column headerText="time">
#{lis.time}
</p:column>
<p:column headerText="uplink">
#{lis.upLink}
</p:column>
<p:column headerText="downlink">
#{lis.downLink}
</p:column>
</p:dataTable>
<p:commandButton value="Save as excel">
<p:dataExporter type="xls" target="tbl" fileName="kananee" pageOnly="true" />
</p:commandButton>
</h:form>
</h:body>
</html>
