Java HTML / XML How to - Unmarshal xml without mapping the root xml element

• Back to JAXB  ↑

Question

We would like to know how to unmarshal xml without mapping the root xml element.

Answer

import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.List;
// w  w  w  . j  a v a2s  . co m
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlValue;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;

public class Main {

  public static void main(String[] args) throws Exception {
    XMLInputFactory xif = XMLInputFactory.newFactory();

    FileInputStream xml = new FileInputStream("input.xml");
    XMLStreamReader xsr = xif.createXMLStreamReader(xml);
    xsr.nextTag(); // Advance to "Persons" tag
    xsr.nextTag(); // Advance to "Person" tag

    JAXBContext jc = JAXBContext.newInstance(Person.class);
    Unmarshaller unmarshaller = jc.createUnmarshaller();
    List<Person> persons = new ArrayList<Person>();
    while (xsr.hasNext() && xsr.isStartElement()) {
      Person person = (Person) unmarshaller.unmarshal(xsr);
      persons.add(person);
      xsr.nextTag();
    }

    for (Person person : persons) {
      System.out.println(person.getName());
    }
  }
  @XmlRootElement(name = "Person")
  public static class Person {
    private String name;
    @XmlValue
    public String getName() {
      return name;
    }

    public void setName(String name) {
      this.name = name;
    }
  }
}

input.xml

<Persons>
    <Person>Jim</Person>
    <Person>Tom</Person>  
</Persons>

• Back to JAXB  ↑