使用JAXB问题对布尔值进行编组

Question

I have a boolean attribute in a java class private boolean isCurrent; Now in xml it gets marshalled into <current>false</current> . Now the field i have is only isCurrent . How do i preserve the name isCurrent as it is in XML?. Though i know it is not related to getters & setter s of the boolean just for information, they are named as setCurrent & isCurrent taking the defaults of eclipse IDE.

Answer 1

A presence of an empty tag could be mapped to a boolean. For eg <isPresent/> Use an XmlAdaptor:

package com.example.xml.adaptor;
import javax.xml.bind.annotation.adapters.XmlAdapter;

public class BooleanToEmptyObjectAdapter extends XmlAdapter<EmptyObject, Boolean> {
    @Override
    public EmptyObject marshal(final Boolean v) {
        return v != null && v ? new EmptyObject() : null;
    }

    @Override
    public Boolean unmarshal(final EmptyObject v) {
        return true;
    }
}

And a dummy object for it to serialize:

package com.example.xml.adaptor;

public class EmptyObject {
    // EMPTY
}

Then in your object, use a Boolean (not a boolean) field:

@XmlRootElement(name = "FooElement")
public class Foo {

    @XmlElement()
    @XmlJavaTypeAdapter(BooleanToEmptyObjectAdapter.class)
    private final Boolean isPresent = false;

    ...        
}