JAXB annotations for nested element lists

By default JAXB (JSR-222) implementations consider public properties (get/set methods) and annotated fields as mapped (and separate). The default mapping is @XmlElement so your properties will be considered as mapped this way.

Solution #1

Since you are annotating the fields you need to add @XmlAccessorType(XmlAccessType.FIELD) on your classes.

@XmlAccessorType(XmlAccessType.FIELD)
public class Parameter {
    @XmlAttribute(name = "attr")
    private String mName;

    @XmlValue
    private String mValue;

    public String getName() {
        return mName;
    }

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

    public String getValue() {
        return mValue;
    }

    public void setValue(String aValue) {
        this.mValue = aValue;
    }
}

Solution #2

Annotate the get (or set) methods.

public class Parameter {
    private String mName;

     private String mValue;

    @XmlAttribute(name = "attr")
    public String getName() {
        return mName;
    }

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

    @XmlValue
    public String getValue() {
        return mValue;
    }

    public void setValue(String aValue) {
        this.mValue = aValue;
    }
}

For More Information

• http://blog.bdoughan.com/2011/06/using-jaxbs-xmlaccessortype-to.html
• http://blog.bdoughan.com/2011/06/jaxb-and-complex-types-with-simple.html

---

UPDATE

You will also need to use the @XmlElement annotation on the mappings property to specify the element name should be mapping.

@XmlRootElement(name = "mappings")
public class Mappings { 
    private List<Mapping> mMappings;

    @XmlElement(name="mapping")
    public List<Mapping> getMappings() {
        return mMappings;
    }

    public void setMappings(List<Mapping> aMappings) {
        this.mMappings = aMappings;
    }
}