validation error in JRXmlDataSource

[cutesolutions]

I got an error while filling a jasperreport with a JRCmlDataSource.

Parse Error at line 1 column 8: cvc-elt.1: Cannot find the declaration of element 'users'.
 

The XML file:

<users>
    <user id="0">
        <name>Christian</name>
        <nummer>2</nummer>
    </user>
    <user id="2">
        <name>Hans</name>
        <nummer>3</nummer>
    </user>
    <user id="1">
        <name>Max</name>
        <nummer>4</nummer>
    </user>
</users>

the source:

JRXmlDataSource jrxmlds = new JRXmlDataSource(_xmlDataSource);

JasperReportManager reportManager = new JasperReportManager(_reportSource, jrxmlds);

I don't know what is wrong. Can somebody help me please?

[andfedotov]

what about this as a first line?

 

<?xml version="1.0" encoding="UTF-8"?>