如何配置JAXB以便在解组标记值时修剪空格？

import javax.xml.bind.annotation.adapters.XmlAdapter;

public class TrimmingAdapter extends XmlAdapter<String, String> {
    @Override
    public String unmarshal(String v) {
        return v.trim();
    }

    @Override
    public String marshal(String v) {
        return v;
    }
}

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

public class MyObject {
    @XmlElement
    @XmlJavaTypeAdapter(TrimmingAdapter.class)
    private String trimmedField;

    @XmlAttribute
    @XmlJavaTypeAdapter(TrimmingAdapter.class)
    private String trimmedAttribute;
}

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

public class Main {
    public static void main(String[] args) {
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(MyObject.class);
            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
            MyObject myObject = (MyObject) unmarshaller.unmarshal(new File("path/to/xml/file.xml"));
            System.out.println(myObject.getTrimmedField());
            System.out.println(myObject.getTrimmedAttribute());
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}