How to fetch a value from XML using XPATH

Question

This is my xml and i wanted to fetch value of Id tag '4654'

<Entity>
       <acc>
            <id>4654</id>
            <name>abc</name>
       </acc>
       <acc>
            <id>5465</id>
            <name>xyz</name>
       </acc>

I am using this code to retrieve the Id value

       DocumentBuilderFactory factory =    DocumentBuilderFactory.newInstance();
       DocumentBuilder builder = factory.newDocumentBuilder();
       Document document = builder.parse(new InputSource(new StringReader(xml))); 
       XPath xPath = XPathFactory.newInstance().newXPath();
       NodeList  node = (NodeList) xPath.evaluate("/Entity/acc/id/text()", document, XPathConstants.NODE);
       System.out.println("node length:"+node.getLength());
       System.out.println("node value:"+ node.item(0).getNodeValue());
       return node.item(0).getNodeValue();

Output returns null

Any help would be appreciated

which output is null?

Michael Meyer
– Michael Meyer

2017-07-12 20:21:09 +00:00
Commented Jul 12, 2017 at 20:21 — Michael Meyer
– Michael Meyer, Commented Jul 12, 2017 at 20:21

SomeDude · Accepted Answer · 2017-07-12 20:39:13Z

3

You need to use XPathConstants.NODESET instead of XPathConstants.NODE

or you can keep it as XPathConstants.NODE and change the evaluate to return Node

Node node = (Node) xPath.evaluate("/Entity/acc/id/text()", document, XPathConstants.NODE);

answered Jul 12, 2017 at 20:39

SomeDude

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