问题描述
我有一个无法控制生成方式的 XML.我想通过将它解组到我手写的类来创建一个对象.
I have an XML which is out of my control on how it is generated. I want to create an object out of it by unmarshaling it to a class written by hand by me.
其结构的一个片段如下所示:
One snippet of its structure looks like:
<categories> <key_0>aaa</key_0> <key_1>bbb</key_1> <key_2>ccc</key_2> </categories>
我该如何处理这种情况?当然元素的数量是可变的.
How can I handle such cases? Of course the element count of is variable.
推荐答案
如果您使用以下对象模型,那么每个未映射的 key_# 元素都将被保存为 org.w3c.dom.Element 的实例:
If you use the following object model then each of the unmapped key_# elements will be kept as an instance of org.w3c.dom.Element:
import java.util.List; import javax.xml.bind.annotation.XmlAnyElement; import javax.xml.bind.annotation.XmlRootElement; import org.w3c.dom.Element; @XmlRootElement public class Categories { private List<Element> keys; @XmlAnyElement public List<Element> getKeys() { return keys; } public void setKeys(List<Element> keys) { this.keys = keys; } }
如果任何元素对应于使用@XmlRootElement 注解映射的类,那么您可以使用@XmlAnyElement(lax=true) 并且已知元素将被转换为相应的对象.示例见:
If any of the elements correspond to classes mapped with an @XmlRootElement annotation, then you can use @XmlAnyElement(lax=true) and the known elements will be converted to the corresponding objects. For an example see:
- http://bdoughan.blogspot.com/2010/08/using-xmlanyelement-to-build-generic.html