👀 Views: 88 💬 Answers: 1 📅 Created: 2025-06-09

xml jaxb java11 Java

I'm confused about Quick question that's been bugging me - I'm working with a frustrating scenario while trying to unmarshal XML data that includes namespaces using JAXB in Java 11. The XML I'm working with looks like this: ```xml <root xmlns:ns="http://example.com/ns"> <ns:item> <ns:name>Item1</ns:name> <ns:value>100</ns:value> </ns:item> </root> ``` I have a class to represent the `item`, as follows: ```java @XmlRootElement(name = "root") @XmlAccessorType(XmlAccessType.FIELD) public class Root { @XmlElement(name = "item", namespace = "http://example.com/ns") private Item item; // getters and setters } @XmlAccessorType(XmlAccessType.FIELD) public class Item { @XmlElement(name = "name", namespace = "http://example.com/ns") private String name; @XmlElement(name = "value", namespace = "http://example.com/ns") private int value; // getters and setters } ``` When I attempt to unmarshal the XML using the following code: ```java JAXBContext jaxbContext = JAXBContext.newInstance(Root.class); Unmarshaller unmarshaller = jaxbContext.createUnmarshaller(); Root root = (Root) unmarshaller.unmarshal(new StringReader(xmlString)); ``` I receive the behavior `javax.xml.bind.UnmarshalException: unmarshal(): Unexpected element (uri:"http://example.com/ns", local:"item"). Expected elements are <{}root>`. This seems to indicate that it is not properly recognizing the namespace. I've ensured that the namespace is correctly defined in both the XML and the Java class, but it still fails. I've also tried using `@XmlElement` without specifying the namespace, but it doesn't resolve the scenario. Is there something I'm missing regarding namespace handling with JAXB in Java 11? Any guidance or suggestions on how to fix this would be greatly appreciated. This is part of a larger application I'm building. What's the best practice here?