JasperReports including blank page at the end of the PDF

You should manually hide the bands after Detail.
For example try hiding the Summary band by setting it's Print When Expression to Boolean.FALSE

<summary>
     <band height="1" splitType="Stretch">
           <printWhenExpression><![CDATA[Boolean.FALSE]]></printWhenExpression>
     </band>
</summary>

Note: not sure about the exact XML context, since I usually do it in iReport.

I faced this issue, in my case it is solved by:

1. Go to Report Properties.
2. Then check Ignore Pagination property.

That's it. I hope it helps.