您可以将所有属性映射到小写节点名称，然后包装 XMLStreamReader 以对其返回的所有属性/元素名称调用 toLowerCase() 。然后从 XMLStreamReader 中解组。
我最近为此问题添加了 EclipseLink JAXB (MOXy) 的增强请求，请随时提供其他信息：
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=331241
对象模型
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class Customer {
private int id;
private String name;
private Address address;
@XmlAttribute
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
public class Address {
private String street;
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
}
演示代码
import java.io.FileInputStream;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.util.StreamReaderDelegate;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Customer.class);
XMLInputFactory xif = XMLInputFactory.newInstance();
XMLStreamReader xsr = xif.createXMLStreamReader(new FileInputStream("input.xml"));
xsr = new MyStreamReaderDelegate(xsr);
Unmarshaller unmarshaller = jc.createUnmarshaller();
Customer customer = (Customer) unmarshaller.unmarshal(xsr);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(customer, System.out);
}
private static class MyStreamReaderDelegate extends StreamReaderDelegate {
public MyStreamReaderDelegate(XMLStreamReader xsr) {
super(xsr);
}
@Override
public String getAttributeLocalName(int index) {
return super.getAttributeLocalName(index).toLowerCase();
}
@Override
public String getLocalName() {
return super.getLocalName().toLowerCase();
}
}
}
将读取这些XML文档：
<CUSTOMER ID="1">
<NAME>Jane Doe</NAME>
<ADDRESS>
<STREET>123 A Street</STREET>
</ADDRESS>
</CUSTOMER>
<CuSToMeR Id="1">
<NaMe>Jane Doe</NAME>
<AdDrEsS>
<STREET>123 A Street</STREET>
</AdDRrEsS>
</CuSToMeR>
并编写以下 XML：
<customer id="1">
<address>
<street>123 A Street</street>
</address>
<name>Jane Doe</name>
</customer>
以下是更详细示例的链接：
- http://bdoughan.blogspot.com/2010/12/case-insensitive-unmarshalling.html
UPDATE
您的代码可以在我的环境中运行（JDK 1.6.0_20 包含 JAXB 和 EclipseLink JAXB (MOXy) 2.2，我还使用 StAX 的默认实现）。当我运行你的例子时：
import java.io.FileInputStream;
import java.util.List;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.util.StreamReaderDelegate;
public class Example {
private static class ToLowerCaseNamesStreamReaderDelegate extends StreamReaderDelegate {
public ToLowerCaseNamesStreamReaderDelegate(XMLStreamReader xsr) {
super(xsr);
}
@Override
public String getAttributeLocalName(int index) {
return super.getAttributeLocalName(index).toLowerCase();
}
@Override
public String getLocalName() {
return super.getLocalName().toLowerCase();
}
}
@XmlRootElement(name="doc")
static class Doc {
@XmlElement(name="element")
List<Element> elements;
}
static class Element {
@XmlAttribute(name = "abc")
String abc;
}
public static void main(String[] args) throws Exception {
XMLInputFactory xif = XMLInputFactory.newInstance();
XMLStreamReader xsr = xif.createXMLStreamReader(new FileInputStream("LowerCaseElementNamesFilterTest.xml"));
Unmarshaller u = JAXBContext.newInstance(Doc.class).createUnmarshaller();
//Do unmarshalling
Doc doc = (Doc) u.unmarshal(new ToLowerCaseNamesStreamReaderDelegate(xsr));
System.out.println(doc.elements.get(0).abc);
System.out.println(doc.elements.get(1).abc);
System.out.println(doc.elements.get(2).abc);
}
}
我得到以下输出：
1
1
2
更新#2
讲话：
线程“main”中的异常
javax.xml.bind.UnmarshalException -
带有链接异常：
[javax.xml.bind.UnmarshalException：
命名空间 URI 和本地名称
解组器需要被拘留。] 在
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException（UnmarshallerImpl.java:425）
在
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:362)
在
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:332)
您是否尝试过修改委托？：
@Override
public String getAttributeLocalName(int index) {
return super.getAttributeLocalName(index).toLowerCase().intern();
}
@Override
public String getLocalName() {
return super.getLocalName().toLowerCase().intern();
}
