Better way to parse xml

Question

I\'ve been parsing XML like this for years, and I have to admit when the number of different element becomes larger I find it a bit boring and exhausting to do, here is what I m

Answer 1

Here's an example of using JAXB with StAX.

Input document:

    
        Name 1
        

            Somestreet
            00001
            Finland
        
    
    
        Name 2
        

            Someotherstreet
            43400
            Sweden
        
    

Person.java:

@XmlRootElement(name = "Person", namespace = "http://example.org")
public class Person {
    @XmlElement(name = "Name", namespace = "http://example.org")
    private String name;
    @XmlElement(name = "Address", namespace = "http://example.org")
    private Address address;

    public String getName() {
        return name;
    }

    public Address getAddress() {
        return address;
    }
}

Address.java:

public class Address {
    @XmlElement(name = "StreetAddress", namespace = "http://example.org")
    private String streetAddress;
    @XmlElement(name = "PostalCode", namespace = "http://example.org")
    private String postalCode;
    @XmlElement(name = "CountryName", namespace = "http://example.org")
    private String countryName;

    public String getStreetAddress() {
        return streetAddress;
    }

    public String getPostalCode() {
        return postalCode;
    }

    public String getCountryName() {
        return countryName;
    }
}

PersonlistProcessor.java:

public class PersonlistProcessor {
    public static void main(String[] args) throws Exception {
        new PersonlistProcessor().processPersonlist(PersonlistProcessor.class
                .getResourceAsStream("personlist.xml"));
    }

    // TODO: Instead of throws Exception, all exceptions should be wrapped
    // inside runtime exception
    public void processPersonlist(InputStream inputStream) throws Exception {
        JAXBContext jaxbContext = JAXBContext.newInstance(Person.class);
        XMLStreamReader xss = XMLInputFactory.newFactory().createXMLStreamReader(inputStream);
        // Create unmarshaller
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        // Go to next tag
        xss.nextTag();
        // Require Personlist
        xss.require(XMLStreamReader.START_ELEMENT, "http://example.org", "Personlist");
        // Go to next tag
        while (xss.nextTag() == XMLStreamReader.START_ELEMENT) {
            // Require Person
            xss.require(XMLStreamReader.START_ELEMENT, "http://example.org", "Person");
            // Unmarshall person
            Person person = (Person)unmarshaller.unmarshal(xss);
            // Process person
            processPerson(person);
        }
        // Require Personlist
        xss.require(XMLStreamReader.END_ELEMENT, "http://example.org", "Personlist");
    }

    private void processPerson(Person person) {
        System.out.println(person.getName());
        System.out.println(person.getAddress().getCountryName());
    }
}