JAXB：如何解组由多个标记或属性值组成的Java对象

我正在从SAX解析器转换到JAXB，无法理解如何将多个标记/属性值解组为单个（可兼容）Java POJO

我有如下xml文件：

<item validFrom="1950" validUntil="1980">
    <description>some text</description>
</item>

我曾尝试使用适配器，但它并没有同时捕获“from”和“until”两个值来创建可变范围实例。我尝试使用

@XmlMixed

，但没有成功

JAXB规定的实现方法是什么

---

一旦解决了这个问题，我将使用（

XmlAdapter

）扩展

MutableRange

，作为创建番石榴不可变范围对象的包装器，使用

@XmlJavaTypeAdapter（MutableRange.class）

将其映射到

validRange

，注意：我是专家组的负责人和成员

您可以使用MOXy的

@XmlPath

扩展来映射此用例：

@XmlRootElement
@XmlAccessorType(XmlAcccessType.FIELD)
public class Item {
    @org.eclipse.persistence.oxm.annotations.XmlPath(".")
    private MutableRange validRange;

    @XmlElement
    private String description;
}

了解更多信息

---

我会用一些简单的方法：

public interface MutableRange() {
    public int getLowerBound();
    public int getUpperBound();
    public void setLowerBound(int lowerBound);
    public void setUpperBound(int upperBound);
}

@XmlRootElement(name = "item")
@XmlAccessorType(XmlAccessType.NONE)
public class Item {
    @XmlAttribute(name = "validFrom")
    private int validFrom;
    @XmlAttribute(name = "validUntil")
    private int validUntil;
    @XmlElement(name = "description")
    private String description;

    public MutableRange getValidRange() {
        return new MutableRange() {
            public int getLowerBound() { return validFrom; }
            public int getUpperBound() { return validUntil; }
            public void setLowerBound(int lowerBound) { validFrom = lowerBound; }
            public void setUpperBound(int upperBound) { validUntil = upperBound; }
        }
    }

    public String getDescription() {
       return description;
    }
}

public interface MutableRange() {
    public int getLowerBound();
    public int getUpperBound();
    public void setLowerBound(int lowerBound);
    public void setUpperBound(int upperBound);
}

@XmlRootElement(name = "item")
@XmlAccessorType(XmlAccessType.NONE)
public class Item {
    @XmlAttribute(name = "validFrom")
    private int validFrom;
    @XmlAttribute(name = "validUntil")
    private int validUntil;
    @XmlElement(name = "description")
    private String description;

    public MutableRange getValidRange() {
        return new MutableRange() {
            public int getLowerBound() { return validFrom; }
            public int getUpperBound() { return validUntil; }
            public void setLowerBound(int lowerBound) { validFrom = lowerBound; }
            public void setUpperBound(int upperBound) { validUntil = upperBound; }
        }
    }

    public String getDescription() {
       return description;
    }
}