Reference to my previous post. I have following code which is reading XML from the file.
logger.log(Level.INFO, "testSchemaChange");
JAXBContext jaxbContext = JAXBContext.newInstance("com.store.web.ws.v1.model");
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
JAXBElement<BookType> jeBookType = (JAXBElement<BookType>) unmarshaller.unmarshal(new File (BOOK_XML));
BookType bookType = jeBookType.getValue();
logger.log(Level.INFO, "Book recieved: " + bookType.getISBN());
I am seeding an XML with Book as my root element instead of BookList. This example is working fine as long as i keep the full path of the package in the JAXBContext.newInstance.
No sooner, did i change
JAXBContext jaxbContext = JAXBContext.newInstance("com.store.web.ws.v1.model");
to
JAXBContext jaxbContext = JAXBContext.newInstance(BookType.class);
I started getting exception SEVERE: unexpected element (uri:"", local:"book"). Expected elements are (none)
Can someone explain why is this behaviour ?
P.S:
For sake of convenience my test class and JAXB generated classes are in same package i.e. com.store.web.ws.v1.model
The problem you are seeing is because the JAXBContext isn't aware of your ObjectFactory class that contains the @XmlElementDecl annotation for the book element.
When you create a JAXBContext on a package name, the it will automatically pull in the ObjectFactory class. If you create a JAXContext on classes you need to explicitly include the class with the @XmlRegistry annotation (ObjectFactory in this case).