Java 使用JAXB获取任何类型的内容和标记XML的属性
我在使用jaxb将标记的内容映射为“object”类型时遇到问题 我有一个名为“attribute”的标记，在这个标记中，我有一个属性“type”。这个标记的内容可以是任何类型，我想得到这个标记的“type”属性和内容，这就是为什么我创建了Value类，除了当我在字段“content”上放置XmlValue注释时，我有一个NullPointerException 我的XML:Java 使用JAXB获取任何类型的内容和标记XML的属性,java,xml,jaxb,Java,Xml,Jaxb,我在使用jaxb将标记的内容映射为“object”类型时遇到问题 我有一个名为“attribute”的标记，在这个标记中，我有一个属性“type”。这个标记的内容可以是任何类型，我想得到这个标记的“type”属性和内容，这就是为什么我创建了Value类，除了当我在字段“content”上放置XmlValue注释时，我有一个NullPointerException 我的XML: <attribute> <id>9137755520013147917</id&g
<attribute>
<id>9137755520013147917</id>
<name>Routeur</name>
<value xsi:type="EntityType" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<id>9139898058113224747</id>
<name>pe-cdg1200e-2sn311-01</name>
<objectTypeId>9138560130813318972</objectTypeId>
<objectTypeName>Routeur PE</objectTypeName>
<classId>3061830882013808530</classId>
<className>Elément de Réseau</className>
</value>
</attribute>
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
"id",
"name",
"ismultiple",
"type",
"value"
})
public static class Attribute {
@XmlElement(required = true)
protected BigInteger id;
protected String name;
protected String ismultiple;
protected String type;
@XmlElement(required = true)
protected Value value;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "")
public class Value {
public Value() {
}
@XmlAttribute(namespace="http://www.w3.org/2001/XMLSchema-instance")
private String type;
@XmlValue
private Object value ;
//getter setter
Exception in thread "main" java.lang.NullPointerException
at com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor.get(TransducedAccessor.java:154)
at com.sun.xml.internal.bind.v2.runtime.property.ValueProperty.<init>(ValueProperty.java:66)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:95)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:145)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:479)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:498)
at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:90)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:145)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:479)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:498)
at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementProperty.<init>(ArrayElementProperty.java:97)
at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementNodeProperty.<init>(ArrayElementNodeProperty.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:145)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:479)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:498)
at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:90)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:145)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:479)
at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:132)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:479)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:305)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1100)
at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:143)
at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:110)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:202)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:376)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522)
at test.JAXB.main(JAXB.java:25)
公共类JAXB{
/**
* @param args
* @throws JAXBException
*/
public static void main(String[] args) throws JAXBException {
File xmlFile = new File("C:\\activation.xml");
//JAXBContext jaxbContext = JAXBContext.newInstance(ObjectFactory.class);
JAXBContext jaxbContext = JAXBContext.newInstance(ServiceOrderType.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
ServiceOrderType scf = (ServiceOrderType) jaxbUnmarshaller.unmarshal(xmlFile);
System.out.println(scf);
for (Attribute attribute : scf.getAttributes().getAttribute()) {
if (attribute.getName().equals("RESEAU SERVEUR XML")) {
/*if (attribute.getValue() instanceof EntityListType){
EntityListType reseau = (EntityListType) attribute.getValue();
System.out.println( "name: " + reseau.getEntity().get(0).getName());
//Element content = (Element) attribute.getValue();
//System.out.println(content.getAttributes().toString());
}*/
System.out.println("value type: " + attribute.getValue().getType());
//List<EntityType> reseau = (List<EntityType>) attribute.getValue;
EntityListType reseau = (EntityListType) attribute.getValue().getObject();
System.out.println("*******>" + reseau.getEntity().get(0).getName());
// Object ob = attribute.getValue().getObject();
System.out.println(attribute.getName() + "---------------->" + attribute.getValue().getObject());
}
}
/*
for(Attribute attribute : scf.getComponents().getEntity().get(0).getAttributes().getAttribute()){
if(attribute.getName().equals("RESEAU SERVEUR XML")){
System.out.println(attribute.getName() + "---------------->" + attribute.getValue());
//System.out.println(attribute.getValue().get);
}
}*/
}
/**
*@param args
*@jaxbeexception
*/
公共静态void main（字符串[]args）抛出JAXBEException{
File xmlFile=新文件（“C:\\activation.xml”）；
//JAXBContext JAXBContext=JAXBContext.newInstance（ObjectFactory.class）；
JAXBContext JAXBContext=JAXBContext.newInstance（ServiceOrderType.class）；
解组器jaxbUnmarshaller=jaxbContext.createUnmarshaller（）；
ServiceOrderType scf=（ServiceOrderType）jaxbUnmarshaller.unmarshal（xmlFile）；
系统输出打印项次（scf）；
对于（属性：scf.getAttributes（）.getAttribute（））{
if（attribute.getName（）.equals（“RESEAU SERVEUR XML”））{
/*if（EntityListType的attribute.getValue（）实例）{
EntityListType reseau=（EntityListType）属性。getValue（）；
System.out.println（“名称：”+reseau.getEntity（）.get（0.getName（））；
//元素内容=（元素）属性.getValue（）；
//System.out.println（content.getAttributes（）.toString（））；
}*/
System.out.println（“值类型：”+attribute.getValue（）.getType（））；
//列表重置=（列表）属性
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "")
class Value {
@XmlAttribute(namespace="http://www.w3.org/2001/XMLSchema-instance")
private String type;
@XmlAnyElement(lax=true)
private Object[] body;
public String getType() {
return type;
}
public Object[] getBody() {
return body;
}
}
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
StringWriter sw = new StringWriter();
jaxbMarshaller.marshal(example.getAttributes().get(0).getValue(), sw);
System.out.println(sw.toString());