MOXy marshal List<?> how to avoid that it sh

问题:

If I have to marshal a List<?> how to avoid that it shows the type?

So the result of a marshalling List<?> is [{"type" : "person","id":"1"},{"type" : "person","id":"2"}] } and it give me also the type="Person" in the JSON results!

How could I avoid that it shows me the type?

Thank you

回答1:

I haven't been able to reproduce the issue that you are seeing. Below is what I have tried.

Domain Model (Person)

package forum16966861;

public class Person {

    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

}

jaxb.properties

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

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

Demo

package forum16966861;

import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;

public class Demo {

    public static void main(String[] args) throws Exception {
        Map<String, Object> properties = new HashMap<String, Object>(2);
        properties.put(JAXBContextProperties.MEDIA_TYPE, "application/json");
        properties.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);            JAXBContext jc = JAXBContext.newInstance(new Class[] {Person.class}, properties);

        List<Object> people = new ArrayList<Object>(2);

        Person jane = new Person();
        jane.setId(1);
        jane.setName("Jane");
        people.add(jane);

        Person john = new Person();
        john.setId(2);
        john.setName("John");
        people.add(john);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(people, System.out);
    }

}

Output

[ {
   "id" : 1,
   "name" : "Jane"
}, {
   "id" : 2,
   "name" : "John"
} ]

---

UPDATE

I don't have right now the code but I can see that the difference is that I define a metadata xml file where I say how to bind Person.

I still haven't reproduced your issue, but here is how I have adapted my example.

oxm.xml

<?xml version="1.0"?>
<xml-bindings
    xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
    package-name="forum16966861">
    <java-types>
        <java-type name="Person">
            <xml-root-element/>
        </java-type>
    </java-types>
</xml-bindings>

Demo

package forum16966861;

import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;

public class Demo {

    public static void main(String[] args) throws Exception {
        Map<String, Object> properties = new HashMap<String, Object>(3);
        properties.put(JAXBContextProperties.MEDIA_TYPE, "application/json");
        properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, "forum16966861/oxm.xml");
        properties.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);
        JAXBContext jc = JAXBContext.newInstance("forum16966861", Person.class.getClassLoader(), properties);

        List<Object> people = new ArrayList<Object>(2);

        Person jane = new Person();
        jane.setId(1);
        jane.setName("Jane");
        people.add(jane);

        Person john = new Person();
        john.setId(2);
        john.setName("John");
        people.add(john);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(people, System.out);
    }

}

Output

[ {
   "id" : 1,
   "name" : "Jane"
}, {
   "id" : 2,
   "name" : "John"
} ]