我具有以下层次结构:

public class Small {
    private String xmlId;

    @XmlID
    @XmlAttribute
    public String getXmlId() {
        if (xmlId == null)
            xmlId = "small" + new Random().nextInt();
        return xmlId;
    }

    public void setXmlId(String id) {
        this.xmlId = id;
    }
}

public class Big extends Small {
    // Code
}


我在试图集结Baz班级的地方:

@XmlRootElement
@XmlAccessorType(XmlAccessType.NONE)
public class Baz {
    private List<Small> smalls = new LinkedList<Small>();

    private Small small;
    private Big big;

    @XmlIDREF
    public Small getSmall() {
        return small;
    }

    public void setSmall(Small small) {
        this.small = small;
    }

    @XmlIDREF
    public Big getBig() {
        return big;
    }

    public void setBig(Big big) {
        this.big = big;
    }

    @XmlElementWrapper(name = "smalls")
    @XmlElement(name = "small")
    public List<Small> getSmalls() {
        return smalls;
    }

    public void setSmalls(List<Small> smalls) {
        this.smalls = smalls;
    }
}


我正在使用以下测试代码:

public class Test2 {
    public static void main(String[] args) throws Exception {
        Small s1 = new Small();
        Small s2 = new Small();
        Big b1 = new Big();

        List<Small> smalls = new LinkedList<Small>();
        smalls.add(s1);
        smalls.add(s2);
        smalls.add(b1);

        Baz baz = new Baz();
        baz.setSmalls(smalls);
        baz.setSmall(s2);
        baz.setBig(b1);

        JAXBContext jc = JAXBContext.newInstance(Baz.class);
        Marshaller m = jc.createMarshaller();
        m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        m.marshal(baz, System.out);
    }
}


不幸的是,在做元帅时,我面临以下例外:

Exception in thread "main" javax.xml.bind.JAXBException:
Exception Description: Invalid XmlIDREF on property [big].  Class [test.moxy.Big] is required to have a property annotated with XmlID.


我希望XmlID批注将被Big类继承。我尝试在Big类中添加“另一个” @XmlID批注,从而解决了编组问题。但是,这在生成XML模式时会导致另一个问题,该模式现在将包含两个ID属性,这是不允许的。

难道我做错了什么?

最佳答案

您看到的行为是一个错误(https://bugs.eclipse.org/353787)。我们已经检入了对EclipseLink 2.3.1和2.4.0流的修复,这些修复将在2011年8月4日开始的每晚下载页面上提供:


http://www.eclipse.org/eclipselink/downloads/nightly.php

关于java - moxy jaxb @XmlID和继承,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/6928521/

10-10 06:22