Can't read Attribute with jaxp (spring batch integration)

Context:
I was trying to map an attribute in an xml file (with no namespace) to a field in an object using spring batch integration with Xtream
I use the @XStreamAsAttribute annotation

It works if I launch xstream directly (it use the xpp parser)
It doesn't work if I launch xstream throught spring batch integration because it use stax parser.

Why:
The spring batch integration is done using spring XstreamMarshaller that use xstream StaxReader

The stax parser validate that attribute match namespace, see org.springframework.xml.stream.AbstractXmlStreamReader ligne 152

When trying to fetch an attribute StaxReader.getAttribute(String name) is called with a null namespace
return in.getAttributeValue(null, name);

=> always return null when used with the stax parser.

Solution:
In the StaxReader class replace
return in.getAttributeValue(null, name);
with
return in.getAttributeValue("", name);

Note:
I was able to override the StaxReader and the XStreamMarshaller class and configure and overrided XStreamMarshaller in spring to make it work