How to return a long property as JSON string value with JAXB

Note: I'm the EclipseLink JAXB (MOXy) lead and a member of the JAXB (JSR-222) expert group.

Below is how you could accomplish this use case with MOXy as your JSON provider.

MyEntity

You would annotate your long property with @XmlSchemaType(name="string") to indicate that it should be marshalled as a String.

package forum11737597;import javax.xml.bind.annotation.*;@XmlRootElementpublic class MyEntity {    private String name;    private long id;    public MyEntity() {    }    public MyEntity(String name, long id) {        setName(name);        setId(id);    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    @XmlSchemaType(name="string")    public long getId() {        return id;    }    public void setId(long id) {        this.id = id;    }}

jaxb.properties

To configure MOXy as your JAXB provider you need to include a file called jaxb.properties in the same package as your domain model (see: http://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as-your.html).

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory

Demo

I have modified your sample code to show what it would look like if you used MOXy.

package forum11737597;import java.io.StringWriter;import java.util.*;import javax.xml.bind.*;import org.eclipse.persistence.jaxb.JAXBContextProperties;public class Demo {    public static void main(String[] args) throws Exception {        MyEntity myInstance = new MyEntity("Benny Neugebauer", 2517564202727464120L);        StringWriter writer = new StringWriter();        Map<String, Object> config = new HashMap<String, Object>(2);        config.put(JAXBContextProperties.MEDIA_TYPE, "application/json");        config.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);        Class[] types = {MyEntity.class};        JAXBContext context = JAXBContext.newInstance(types, config);        Marshaller marshaller = context.createMarshaller();        marshaller.marshal(myInstance, writer);        System.out.println(writer.toString());    }}

Output

Below is the output from running the demo code:

{"id":"2517564202727464120","name":"Benny Neugebauer"}

For More Information

• http://blog.bdoughan.com/2011/08/json-binding-with-eclipselink-moxy.html