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javaxmlelementdefault-namespace

Remove Namespace from tag

I searched in SO but I did not found nothing that solves my problem. I hope some one can help me.

I am building a XML file and I need to remove the Namespace xmlns.

That is my code

Document xmlDocument = new Document();
Namespace ns1 = Namespace.getNamespace("urn:iso:std:iso:20022:tech:xsd:pain.001.001.03");
Namespace ns2 = Namespace.getNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
Element root = new Element("Document", ns1);
root.addNamespaceDeclaration(ns2);
xmlDocument.setRootElement(root);
Element CstmrCdtTrfInitn = new Element("CstmrCdtTrfInitn");
root.addContent(CstmrCdtTrfInitn);

PrintDocumentHandler pdh = new PrintDocumentHandler();
pdh.setXmlDocument(xmlDocument);
request.getSession(false).setAttribute("pdh", pdh);

ByteArrayOutputStream sos = new ByteArrayOutputStream();
XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
Format format = outputter.getFormat();
format.setEncoding(SOPConstants.ENCODING_SCHEMA);
outputter.setFormat(format);
outputter.output(root, sos);
sos.flush();
return sos;

And this is the created XML-File

<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.001.03">
    <CstmrCdtTrfInitn xmlns=""/>
</Document>

I have to remove the namespace xmlns from the tag CstmrCdtTrfInitn.

Many thanks in advance.

Solution

  • Namespace declaration without prefix (xmlns="...") is known as default namespace. Notice that, unlike prefixed namespace, descendant elements without prefix inherit ancestor's default namespace implicitly. So in the XML below, <CstmrCdtTrfInitn> is considered in the namespace urn:iso:std:iso:20022:tech:xsd:pain.001.001.03 :

    <Document xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.001.03">
    <CstmrCdtTrfInitn/>
</Document>

    If this is the wanted result, instead of trying to remove xmlns="" later, you should try to create CstmrCdtTrfInitn using the same namespace as Document in the first place :

    Element CstmrCdtTrfInitn = new Element("CstmrCdtTrfInitn", ns1);