Unmarshall From XML using JAXB

msi_333 · **Posted:** Wed Jul 08, 2009 12:23 am

Unmarshall From XML using JAXB :

This is example unmarshall the content of Student xml into the java objects .

Code:

import jaxbclasses.studentType;
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;

public class UnmarshallingTest {

    public static void main (String [] args) {
        try {
            JAXBContext jc = JAXBContext.newInstance ("jaxbclasses");

            Unmarshaller u = jc.createUnmarshaller ();

           File f = new File ("student.xml");
           JAXBElement element = (JAXBElement) u.unmarshal (f);

           studentType student= (studentType) element.getValue ();
           System.out.println ("Student Gender is  : " + student.getGender ());
           System.out.println ("Student Name is : " + item.getName ());
           System.out.println ("Student Age is : " + item.getAge ());
       } catch (JAXBException e) {
           e.printStackTrace ();
       }
   }
}
 

Here is the schema ( XSD file ) .

Code:

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:element name="student" type="studentType"/>
    <xsd:complexType name="studentType">
        <xsd:sequence>
            <xsd:element name="gender" type="xsd:string"/>
            <xsd:element name="name" type="xsd:string"/>
            <xsd:element name="age" type="xsd:integer"/>
        </xsd:sequence>
    </xsd:complexType>
</xsd:schema> 

robbie70 · **Posted:** Wed Jan 26, 2011 12:43 pm

I think there is a small typo in your example,

I think the code should read,

Code:

           
System.out.println ("Student Name is : " + student.getName ());
System.out.println ("Student Age is : " + student.getAge ());

Also it might be worth mentioning that you need to generate the java class from the XSD file you've mentioned. I used the utility plug-in for Eclipse called XJC. Then the code in your example will find the java class for StudentType. Might be obvious for experienced programmers but not for people new to Jaxb.

Good example though, thanks.

Unmarshall From XML using JAXB

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