处理JAXB中的嵌套元素 [英] Handling nested elements in JAXB

问题描述

我想知道是否有可能让JAXB不为用作包装器的XML元素创建Java对象。例如，对于以下结构的XML

I am wondering if it is possible to have JAXB not to create Java object for XML elements that serve as wrappers. For example, for XML of the following structure

<root>
    <wrapper>
        <entity/>
    </wrapper>
</root>

我不想要的对象< wrapper> 即将创建。所以对于类似

I do not want an object for <wrapper> to be created at all. So for a class like

class Root {
    private Entity entity;
}

< entity> 元素应该直接解组到实体字段中。

the <entity> element should be unmarshalled directly into the entity field.

是否可以用JAXB实现？

Is it possible to achieve with JAXB?

推荐答案

虽然它需要额外的编码，但是使用瞬态包装器对象可以通过以下方式完成所需的解组：

Although it requires extra coding, the desired unmarshalling is accomplished in the following way using a transient wrapper object:

@XmlRootElement(name = "root")
public class Root {

    private Entity entity;

    static class Entity {

    }

    static class EntityWrapper {
        @XmlElement(name = "entity")
        private Entity entity;

        public Entity getEntity() {
            return entity;
        }
    }

    @XmlElement(name = "wrapper")
    private void setEntity(EntityWrapper entityWrapper) {
        entity = entityWrapper.getEntity();
    }

}

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