我有课
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "customerOrder", propOrder = {
"demandsUuid",
"invoicesOutUuid",
"paymentsUuid",
"customerOrderPosition",
"purchaseOrdersUuid"
})
public class CustomerOrder extends LegendEntity {
@XmlAttribute(name = "sourceAgentUuid")
@XmlIDREF
@XmlSchemaType(name = "IDREF")
@XmlJavaTypeAdapter(XmlAdapterTest.class)
protected Object sourceAgentUuid;
....
也是sourceAgentUuid字段的代理类
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "agent", propOrder = {
"attribute",
"requisite",
"contact",
"contactPerson",
"agentNewsItem",
"tags"
})
@XmlSeeAlso({
Company.class
})
public class Agent
extends LegendEntity
{
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlID
@XmlSchemaType(name = "ID")
protected String uuid;
和解组xml片段
<?xml version="1.0" encoding="UTF-8"?>
<customerOrder deliveryPlannedMoment="2014-04-23T16:10:00+04:00" reservedSum="0.0" stateUuid="44b3fca5-a2b3-11e3-31b2-002590a28eca" targetAgentUuid="9a3c7d6b-4245-11e3-24c6-7054d21a8d1e"
sourceAgentUuid="ef0b03de-c95b-11e3-9183-002590a28eca" sourceStoreUuid="b05ed064-8743-11e3-0c1a-002590a28eca"
applicable="true" moment="2014-04-21T17:50:00+04:00" payerVat="true" rate="1.0" vatIncluded="true" created="2014-04-21T17:50:44.142+04:00" createdBy="it@erms" name="440" updated="2014-04-22T12:19:56.472+04:00" updatedBy="it@erms" readMode="SELF" changeMode="NONE">
<accountUuid>5f65cc9e-3708-11e3-bf9a-7054d21a8d1e</accountUuid>
<accountId>5f65cc9e-3708-11e3-bf9a-7054d21a8d1e</accountId>
<uuid>ef1267b8-c95b-11e3-aeb4-002590a28eca</uuid>
<groupUuid>9a3ad96b-4245-11e3-010e-7054d21a8d1e</groupUuid>
<groupId>9a3ad96b-4245-11e3-010e-7054d21a8d1e</groupId>
<code>440</code>
<externalcode>440</externalcode>
当我尝试解组
JAXBElement poe = (JAXBElement)u.unmarshal( new FileInputStream( "org_order.xml" ) );
CustomerOrder co=(CustomerOrder)poe.getValue();
System.out.println(co.getSourceAgentUuid());
结果为null（但所有其他非@XmlIDREF字段均已编组好）
如何获得ef0b03de-c95b-11e3-9183-002590a28eca结果？
我已经简单地创建了测试类。
为什么输出为空？
import java.io.ByteArrayInputStream;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlID;
import javax.xml.bind.annotation.XmlIDREF;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlSchemaType;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.CollapsedStringAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
public class TestMarshall {
public static void main(String[] args) {
try {
// marshal();
unmarshal();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void marshal() throws Exception {
CustomerOrder co = new CustomerOrder();
Agent a = new Agent();
a.setUuid("sdfsdf");
co.setSourceAgentUuid(a);
JAXBContext jc = JAXBContext.newInstance(CustomerOrder.class,
Agent.class);
Marshaller m = jc.createMarshaller();
m.marshal(co, System.out);
}
public static void unmarshal() throws Exception {
JAXBContext jc = JAXBContext.newInstance(CustomerOrder.class,
Agent.class);
Unmarshaller u = jc.createUnmarshaller();
String testXML = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><customerOrder sourceAgentUuid=\"sdfsdf\"/>";
CustomerOrder poe = (CustomerOrder) u
.unmarshal(new ByteArrayInputStream(testXML.getBytes()));
CustomerOrder co = poe;
System.out.println("sourceAgentUuid= " + co.getSourceAgentUuid());
}
}
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "agent")
class Agent {
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
@XmlID
@XmlSchemaType(name = "ID")
protected String uuid;
public String getUuid() {
return uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
}
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
@XmlType(name = "customerOrder")
class CustomerOrder {
@XmlAttribute(name = "sourceAgentUuid")
@XmlIDREF
@XmlSchemaType(name = "IDREF")
protected Object sourceAgentUuid;
public Object getSourceAgentUuid() {
return sourceAgentUuid;
}
public void setSourceAgentUuid(Object sourceAgentUuid) {
this.sourceAgentUuid = sourceAgentUuid;
}
}
最佳答案
@XmlIDREF及其对应的@XmlID是“ XML指针”，在XML文本中显示为字符串。 JAXB匹配这些值对，并将匹配的引用解析为漂亮的对象引用。
因此，在解组后，您将看不到XML文件中的字符串。的
Object sourceAgentUuid
（在您的情况下）将包含对该“源代理”对象的引用（如果存在这样一个XML元素，其@XmlID设置为该值），否则将为null。