javax.xml.bind.UnmarshalException: unexpected elem

Question

unexpected element (uri:"", local:"Group"). Expected elements are <{}group>

Meet an exception when unmarshalling from xml

JAXBContext jc = JAXBContext.newInstance(Group.class); 
Unmarshaller unmarshaller = jc.createUnmarshaller();
Group group = (User)unmarshaller.unmarshal(new File("group.xml"));

Group class has no any annotation and group.xml just contains data.

Anything can be the cause?

Answer 1

I had the same issue. I added following attributes to <xs:schema..> elementFormDefault="qualified" attributeFormDefault="unqualified"

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns="http://www.example.com/schemas/ArrayOfMarketWithStations"
    targetNamespace="http://www.example.com/schemas/ArrayOfMarketWithStations" 
    elementFormDefault="qualified" attributeFormDefault="unqualified" >

and re-generated java classes by running xjc, which corrected package-info.java.

@javax.xml.bind.annotation.XmlSchema(namespace = "http://www.example.com/schemas/ArrayOfMarketWithStations", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)

This fixed the issue for me.

Answer 2

If none of the above works, try adding

@XmlRootElement(name="Group") to the Group classs.

Answer 3

Same to me. The name of the mapping class was Mbean but the tag root name was mbean so I had to add the annotation:

@XmlRootElement(name="mbean")
public class MBean { ... }