👀 Views: 85 💬 Answers: 1 📅 Created: 2025-06-09

jaxb xml unmarshal namespaces Java

I've been banging my head against this for hours. I'm working on a personal project and I've searched everywhere and can't find a clear answer..... I'm working with an scenario while unmarshalling an XML document that contains multiple namespaces using JAXB in Java. The XML structure includes elements from two different namespaces, but when I attempt to unmarshal, I'm getting the following behavior: ``` Exception in thread "main" javax.xml.bind.UnmarshalException: unexpected element (uri:"http://www.example.com/schema1", local:"elementA") ``` Here’s a snippet of the XML: ```xml <root xmlns:s1="http://www.example.com/schema1" xmlns:s2="http://www.example.com/schema2"> <s1:elementA>Value A</s1:elementA> <s2:elementB>Value B</s2:elementB> </root> ``` My JAXB annotated classes look like this: ```java @XmlRootElement(name = "root") @XmlAccessorType(XmlAccessType.FIELD) public class Root { @XmlElement(name = "elementA", namespace = "http://www.example.com/schema1") private String elementA; @XmlElement(name = "elementB", namespace = "http://www.example.com/schema2") private String elementB; // Getters and Setters } ``` Despite specifying the namespaces in my annotated classes, it seems that JAXB is unable to correctly map `elementA` from the XML document, resulting in the `UnmarshalException`. I’ve tried adding the namespace mappings to my `JAXBContext` using the following: ```java JAXBContext jaxbContext = JAXBContext.newInstance(Root.class); Unmarshaller unmarshaller = jaxbContext.createUnmarshaller(); Unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/xml"); Unmarshaller.setProperty(UnmarshallerProperties.JAXB_FORMATTED_OUTPUT, Boolean.TRUE); ``` When I run this code with the XML above, I still face the unexpected element behavior. I’ve double-checked the namespace URIs and confirmed they match. Is there something I could be missing regarding namespace handling in JAXB? Any guidance or solutions would be greatly appreciated. For context: I'm using Java on Windows. Am I missing something obvious? Any ideas what could be causing this? This is part of a larger service I'm building. I'd really appreciate any guidance on this. What would be the recommended way to handle this? I've been using Java for about a year now. Any advice would be much appreciated.