Question

I’m trying to parse some XML with EclipseLink MOXy, and it’s failing on the line with the xsi attribute. If I remove this, it parses fine. However, I’ve got 100GiB of XML to wade through and changing the source files is not an option.

It’s been suggested that if I can set XmlParser.setNamespaceAware(false) then it should work – but I’ve got no idea how to configure this, without breaking right into the guts of MOXy.

<record>
<header>
    <!-- citation-id: 14404534; type: journal_article; -->
    <identifier>info:doi/10.1007/s10973-004-0435-2</identifier>
    <datestamp>2009-04-28</datestamp>
    <setSpec>J</setSpec>
    <setSpec>J:1007</setSpec>
    <setSpec>J:1007:2777</setSpec>
</header>
<metadata>
    <crossref xmlns="http://www.crossref.org/xschema/1.0"
        xsi:schemaLocation="http://www.crossref.org/xschema/1.0 http://www.crossref.org/schema/unixref1.0.xsd">
        <journal>
            <journal_metadata language="en">
[...]

The exception I get when the xsi: prefix is present is:

org.springframework.oxm.UnmarshallingFailureException: JAXB unmarshalling exception; nested exception is javax.xml.bind.UnmarshalException
 - with linked exception:
[Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.4.0.v20120608-r11652): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred unmarshalling the document
Internal Exception: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[13,107]
Message: http://www.w3.org/TR/1999/REC-xml-names-19990114#AttributePrefixUnbound?crossref&xsi:schemaLocation&xsi]

Answer 1

There currently isn’t an option in EclipseLink JAXB (MOXy) to tell it to ignore namespaces. But there is an approach you can use by leveraging a StAX parser.

Demo

You can create a StAX XMLStreamReader on the XML input that is not namespace aware and then have MOXy unmarshal from that.

package forum13416681;

import javax.xml.bind.*;
import javax.xml.stream.*;
import javax.xml.transform.stream.StreamSource;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Foo.class);

        XMLInputFactory xif = XMLInputFactory.newFactory();
        xif.setProperty(XMLInputFactory.IS_NAMESPACE_AWARE, false);
        StreamSource source = new StreamSource("src/forum13416681/input.xml");
        XMLStreamReader xsr = xif.createXMLStreamReader(source);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Foo root = (Foo) unmarshaller.unmarshal(xsr);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(root, System.out);
    }

}

Java Model (Foo)

package forum13416681;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Foo {

    private String bar;

    public String getBar() {
        return bar;
    }

    public void setBar(String bar) {
        this.bar = bar;
    }

}

Input (input.xml)

Below is a simplified version of the XML from your question. Note that this XML is not properly namespace qualified since it is missing the namespace declaration for the xsi prefix.

<?xml version="1.0" encoding="UTF-8"?>
<foo xsi:schemaLocation="http://www.crossref.org/xschema/1.0 http://www.crossref.org/schema/unixref1.0.xsd">
    <bar>Hello World</bar>
</foo>

Output

Below is the output from running the demo code.

<?xml version="1.0" encoding="UTF-8"?>
<foo>
   <bar>Hello World</bar>
</foo>