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我有几个XSD，我通过它们通过XJC创建了Java代码。我可以通过“直接映射”POJOs XJC提供的许多信息。剩下的大部分可以通过JAXBElements获取。然而，我不知道如何与他们交谈，有几个因素，即“交易/描述”父母的“成本”因素。JAXB - 无法获取某些对象信息
<transaction>
<aid-type code="1995-09-25"/>
<flow-type code="10">ODA</flow-type>
<provider-org ref="DE-1">BMZ</provider-org>
<value currency="EUR" value-date="1995-09-25">2070227</value>
<transaction-type code="D">Disbursement</transaction-type>
<description type="1" xml:lang="en">
<costs currency="EUR" type="Personnel costs">1060135</costs>
<costs currency="EUR" type="Material costs">665117</costs>
<costs currency="EUR" type="Other costs">344975</costs>
</description>
</transaction>
正如你可以看到Transaction.java包含“描述”元素和地图对JAXBElement.class。
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"valueOrDescriptionOrTransactionType"
})
@XmlRootElement(name = "transaction")
public class Transaction {
@XmlElementRefs({
@XmlElementRef(name = "transaction-date", type = JAXBElement.class, required = false),
@XmlElementRef(name = "value", type = JAXBElement.class, required = false),
@XmlElementRef(name = "disbursement-channel", type = JAXBElement.class, required = false),
@XmlElementRef(name = "receiver-org", type = JAXBElement.class, required = false),
@XmlElementRef(name = "transaction-type", type = JAXBElement.class, required = false),
@XmlElementRef(name = "description", type = JAXBElement.class, required = false),
@XmlElementRef(name = "tied-status", type = JAXBElement.class, required = false),
@XmlElementRef(name = "aid-type", type = JAXBElement.class, required = false),
@XmlElementRef(name = "finance-type", type = JAXBElement.class, required = false),
@XmlElementRef(name = "provider-org", type = JAXBElement.class, required = false),
@XmlElementRef(name = "flow-type", type = JAXBElement.class, required = false)
})
@XmlAnyElement(lax = true)
protected List<Object> valueOrDescriptionOrTransactionType;
@XmlAttribute(name = "ref")
protected String ref;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
在Transaction.java顶部的模式片段说：
...
<element name="description" type="{}textType"/>
...
那么的 '描述' 的类型应该是JAXBElement的<TextType>。该TextType.java看起来是这样的：
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "textType", propOrder = {"content"})
public class TextType {
@XmlMixed
@XmlAnyElement(lax = true)
protected List<Object> content;
@XmlAttribute(name = "lang", namespace = "http://www.w3.org/XML/1998/namespace")
protected String lang;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();
我们得到的信息进行交易的我建立一个交易对象并获取它的内容：
List<Object> listOfTransactionContents = transaction.getValueOrDescriptionOrTransactionType();
这给了我，我找了清单JAXBElement对象。
for (Object obj : listOfTransactionContents)
{
JAXBElement<TextType> jaxbElementTextType = (JAXBElement<TextType>) obj;
TextType textType = jaxbElementTextType.getValue();
List<Object> listOftTextTypes = textType.getContent();
....
但是，这里是问题，我不知道如何获得'成本'元素的内容。上述TextType.java的的getContent（）方法，它说：
* Objects of the following type(s) are allowed in the list
* {@link Element }
* {@link String }
* {@link Object }
的“成本”要素的内容必须存储在某种名单的，因为可以有不止一个下“描述”父。