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Editorial Team
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Asked: 2026-05-26T06:05:13+00:00

I’m using a REST webservice to retrieve some data. As a response I get

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I’m using a REST webservice to retrieve some data. As a response I get some long xml or other files. Part of it could look for example like this:

<jfs:jauthRevokeTokenUrl
      rdf:resource="https://localhost:9443/jts/jauth-revoke-token" />

  <jfs:jauthCheckAuthUrl
      rdf:resource="https://localhost:9443/jts/jauth-check-auth" />

  <jfs:jauthProxyUrl
      rdf:resource="https://localhost:9443/jts/jauth-proxy" />

  <jfs:jauthSigninUrl
      rdf:resource="https://localhost:9443/jts/jauth-signin" />

If I now want to retrieve the value of rdf:resource of for example the node jfs:jautSigningURL, what Java framework can I use for this? And what if the response is not xml but json? What frameworks can I use then? Or do I have to code this by myself?

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1 Answer

  1. Editorial Team

    If you want to avoid any big framework, you could look at the build in tools of java for parsing XML

    Here an example, assuming you have an XML string variable

     DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();

 DocumentBuilder db = documentBuilderFactory.newDocumentBuilder();
 InputStream inputStream = new ByteArrayInputStream(XML.getBytes());
 Document parsed = db.parse(inputStream);

 parsed.getDocumentElement().normalize();
 Node tag = parsed.getElementsByTagName("jfs:jauthSigninUrl").item(0);
 String value = tag.getAttributes().getNamedItem("rdf:resource").getNodeValue();

    You could further refine that by including namespace definitions, null checks and maybe simplifying it with an XPath expression, like so

     XPath xpath = XPathFactory.newInstance().newXPath();
 String value = xpath.evaluate("//jauthSigninUrl/@resource", parsed);

    See here Java XML XPATH

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