Unable to read xml with namespace prefix using DOM parser

Question

This is the input XML:

Answer 1

The W3C dom method for namespaced elements:

getElementsByTagNameNS

NodeList getElementsByTagNameNS(String namespaceURI,
                                String localName)

    Returns a NodeList of all the Elements with a given local name and namespace URI in document order.

    Parameters:
        namespaceURI - The namespace URI of the elements to match on. The special value "*" matches all namespaces.
        localName - The local name of the elements to match on. The special value "*" matches all local names. 
    Returns:
        A new NodeList object containing all the matched Elements.
    Since:
        DOM Level 2

IIRC earlier version of the W3C DOM had poor support for namespaces so I don't use it. However if you use the above with the full namespaceURI http://schemas.xmlsoap.org/soap/envelope/ it should work. The prefix is unimportant - it has no permanency outside the document it is used in.

so try:

System.out.println("Element :" + doc.getElementsByTagNameNS(
        "http://schemas.xmlsoap.org/soap/envelope/", "Token").item(0));

Answer 2

get the namespace first

docFactory.setNamespaceAware(true);
StringBuilder nameSpace = new StringBuilder(
                    doc.getDocumentElement().getPrefix() != null ? doc.getDocumentElement().getPrefix() + ":" : "");

then use nameSpace variable accrodingly

eg:

Node node= doc.getElementsByTagName(nameSpace + "Node1").item(0)
                    .getFirstChild();

Answer 3

You could always assign the namespace to a variable, this would allow changing it on the fly in the future.

Answer 4

Try to use XPath expression. See sample code below.

Document doc = dBuilder.parse(new ByteArrayInputStream(responseXML.getBytes()));
doc.getDocumentElement().normalize();
XPath xPath =  XPathFactory.newInstance().newXPath();

String expression = "/ns6:ReadPersonReturn/ns6:object/ns3:Person/ns3:Phone/ns3:item";
NodeList nodes = (NodeList) xPath.compile(expression).evaluate(doc, XPathConstants.NODESET);
Element secondNode = null;
if(nodes != null && nodes.getLength() > 0){
    secondNode = (Element) leadCloudPingRecordNodes.item(i);
}