Jaxb ignore the namespace on unmarshalling

Thank you all, here shared my solution which works for my code , i try to make it generic every namespace contain ": " i write code if any tag have ":" it will remove from xml , This is used to skip namespace during unmarshalling using jaxb.

public class NamespaceFilter {

private NamespaceFilter() {

}

private static final String COLON = ":";

public static XMLReader nameSpaceFilter() throws SAXException {
    XMLReader xr = new XMLFilterImpl(XMLReaderFactory.createXMLReader()) {
        private boolean skipNamespace;

        @Override
        public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
            if (qName.indexOf(COLON) > -1) {
                skipNamespace = true;
            } else {
                skipNamespace = false;
                super.startElement("", localName, qName, atts);
            }
        }

        @Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
            if (qName.indexOf(COLON) > -1) {
                skipNamespace = true;
            } else {
                skipNamespace = false;
                super.endElement("", localName, qName);
            }
        }

        @Override
        public void characters(char[] ch, int start, int length) throws SAXException {
            if (!skipNamespace) {
                super.characters(ch, start, length);
            }
        }
    };
    return xr;
}

}

for unmarshalling

XMLReader xr = NamespaceFilter.nameSpaceFilter();
Source src = new SAXSource(xr, new InputSource("C:\\Users\\binal\\Desktop\\response.xml"));
StringWriter sw = new StringWriter();
Result res = new StreamResult(sw);
TransformerFactory.newInstance().newTransformer().transform(src, res);
JAXBContext jc = JAXBContext.newInstance(Tab.class);
Unmarshaller u = jc.createUnmarshaller();
String done = sw.getBuffer().toString();
StringReader reader = new StringReader(done);
Tab tab = (Tab) u.unmarshal(reader);

System.out.println(tab);

`

Namesapce awareness is feature of the document reader/builder/parser not marshallers. XML elements from different namespaces represents different entities == objects, so marshallers cannot ignore them.

You correctly switched off the namespaces in your SAX reader and as you said it worked. I don't understand your problem with it, your marshaller still can be injected, the difference is in obtaining the input data.

The same trick with document builder should also work (I will test it later on), I suspect that you were still using the marshaller with "hardcoded" namespace but your document was namespace free.

In my project I use XSLT to solve similar issue. Setting namespace awarness is definitely easier solution. But, with XSLT I could selectviely remove only some namespaces and also my my input xml are not always identical (ignoring namespaces) and sometimes I have to rename few elements so XSLT gives me this extra flexibility.

To remove namespaces you can use such xslt template:

<xsl:stylesheet version="1.0" xmlns:e="http://timet.dom.robust.ed" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<xsl:template match="/"> 
    <xsl:copy>
        <xsl:apply-templates />
    </xsl:copy>
</xsl:template>  

<xsl:template match="*">
    <xsl:element name="{local-name()}">
        <xsl:apply-templates select="@* | node()" />
    </xsl:element>
</xsl:template>

<xsl:template match="@*">
    <xsl:attribute name="{local-name()}">
        <xsl:value-of select="."/>
    </xsl:attribute>
</xsl:template>

<xsl:template match="text() | processing-instruction() | comment()">
    <xsl:copy />
</xsl:template>
</xsl:stylesheet>

Then in Java before unmarshalling I transform the input data:

Transformer transformer = TransformerFactory.newInstance().newTransformer(stylesource);
Source source = new DOMSource(xml);
DOMResult result = new DOMResult();
transformer.transform(source, result);