如标题中所述,我想忽略文档中元素名称的大小写。
static class XY433 {
@XmlAttribute(name = "C200")
String c200;
@XmlAttribute(name = "C215")
String c215;
@XmlAttribute(name="F001")
String f001;
@XmlAttribute(name="f001")
String lcf001; // I want to avoid this duplication
}
我试图使用Blaise Doughan发布的代码:
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);
}
这实际上不起作用。
null
2
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
at java.util.ArrayList.RangeCheck(ArrayList.java:546)
at java.util.ArrayList.get(ArrayList.java:321)
at com.hre.commons.tec.xml.LowerCaseElementNamesFilter.main(LowerCaseElementNamesFilter.java:58)
对于这个XML:
<doc>
<Element ABC="1"></Element>
<element Abc="1"></element>
<element abc="2"></element>
</doc>
答案 0 :(得分:9)
您可以将所有属性映射到小写节点名称,然后包装XMLStreamReader以在它返回的所有属性/元素名称上调用toLowerCase()。然后从该XMLStreamReader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:
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();
}
}
}
将阅读这些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:
<强>更新强>
您的代码在我的环境中工作(包含JAXB和EclipseLink JAXB(MOXy)2.2的JDK 1.6.0_20,我也使用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
解决:
线程“main”中的异常 javax.xml.bind.UnmarshalException - 链接异常: [javax.xml.bind.UnmarshalException: 名称空间URI和本地名称 unmarshaller需要被拘禁。] at 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)
您是否尝试过修改代理?:
@Override
public String getAttributeLocalName(int index) {
return super.getAttributeLocalName(index).toLowerCase().intern();
}
@Override
public String getLocalName() {
return super.getLocalName().toLowerCase().intern();
}
答案 1 :(得分:1)
遇到类似的问题。
我的解决方案是在模型实体上添加@XmlAdpater
,它引用您自己的XMLAdapter
,这将在marshall / unmarshall上提供灵活的自定义。
答案 2 :(得分:1)
我正在使用moxy 2.7.1版本,它可以与UnmarshallerProperty一起使用,如下所示。
unmarshaller.setProperty(UnmarshallerProperties.UNMARSHALLING_CASE_INSENSITIVE, true);