使用 JAXB 将 XML 文档嵌入到另一个 XML 中
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【中文标题】使用 JAXB 将 XML 文档嵌入到另一个 XML 中【英文标题】：Embedding XML document inside another XML with JAXB 【发布时间】：2012-08-14 15:08:14 【问题描述】：JAXB 对象是用 Eclipse 生成的，然后我一直在尝试对其进行调整。
我想用 JAXB 得到这个：
</RootElement xmlns="http://example.com/rootElement">
<Body>
<OtherRoot xmlns="http://example.com/OtherRoot">
<CompanyName>Google</CompanyName>
<DataSet>online</DataSet>
</OtherRoot>
</Body>
</RootElement>
但我所做的只是：
</RootElement xmlns="http://example.com/rootElement"
xmlns:n2="http://example.com/OtherRoot">
<Body>
<ns2:OtherRoot>
<ns2:CompanyName>Goolge</ns2:CompanyName>
<n2:DataSet>online</n2:DataSet>
</ns2:OtherRoot>
</Body>
</RootElement>
这并不理想。获得预期结果的最佳方法是什么？
【问题讨论】：
这两个 XML 样本是等价的，所以第二个应该没有问题。 检查我对类似问题的回答之一，它应该会有所帮助：***.com/a/5722013/383861 这似乎可以通过一些调整来解决问题 【参考方案1】：感谢Blaise 提及他之前的回答。我最终使用了类似的方法：
这就是我截获 Writer 的方式：
StringWriter writer = new StringWriter();
XMLOutputFactory factory = XMLOutputFactory.newFactory();
XMLWriter xmlWriter = new XMLWriter(factory.createXMLStreamWriter(writer));
marshaller.marshal(message, xmlWriter);
这里是 XMLWriter 类：
import java.util.Iterator;
import javax.xml.namespace.NamespaceContext;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
public class XMLWriter implements XMLStreamWriter
private XMLStreamWriter writer;
private ProxyNameSpaceContext nc = new ProxyNameSpaceContext();
public XMLWriter(XMLStreamWriter writer) throws XMLStreamException
super();
this.writer = writer;
writer.setNamespaceContext(nc);
@Override
public void close() throws XMLStreamException
writer.close();
@Override
public void flush() throws XMLStreamException
writer.flush();
@Override
public NamespaceContext getNamespaceContext()
return writer.getNamespaceContext();
@Override
public String getPrefix(String uri) throws XMLStreamException
return writer.getPrefix(uri);
@Override
public Object getProperty(String name) throws IllegalArgumentException
return writer.getProperty(name);
@Override
public void setDefaultNamespace(String uri) throws XMLStreamException
writer.setDefaultNamespace(uri);
@Override
public void setNamespaceContext(NamespaceContext context)
throws XMLStreamException
@Override
public void setPrefix(String prefix, String uri) throws XMLStreamException
writer.setPrefix(prefix, uri);
@Override
public void writeAttribute(String prefix, String namespaceURI,
String localName, String value) throws XMLStreamException
writer.writeAttribute(prefix, namespaceURI, localName, value);
@Override
public void writeAttribute(String namespaceURI, String localName,
String value) throws XMLStreamException
writer.writeAttribute(namespaceURI, localName, value);
@Override
public void writeAttribute(String localName, String value)
throws XMLStreamException
writer.writeAttribute(localName, value);
@Override
public void writeCData(String data) throws XMLStreamException
writer.writeCData(data);
@Override
public void writeCharacters(char[] text, int start, int len)
throws XMLStreamException
writer.writeCharacters(text, start, len);
@Override
public void writeCharacters(String text) throws XMLStreamException
writer.writeCharacters(text);
@Override
public void writeComment(String data) throws XMLStreamException
writer.writeComment(data);
@Override
public void writeDTD(String dtd) throws XMLStreamException
writer.writeDTD(dtd);
@Override
public void writeDefaultNamespace(String namespaceURI)
throws XMLStreamException
writer.writeDefaultNamespace(namespaceURI);
@Override
public void writeEmptyElement(String prefix, String localName,
String namespaceURI) throws XMLStreamException
writer.writeEmptyElement(prefix, localName, namespaceURI);
@Override
public void writeEmptyElement(String namespaceURI, String localName)
throws XMLStreamException
writer.writeEmptyElement(namespaceURI, localName);
@Override
public void writeEmptyElement(String localName) throws XMLStreamException
writer.writeEmptyElement(localName);
@Override
public void writeEndDocument() throws XMLStreamException
writer.writeEndDocument();
@Override
public void writeEndElement() throws XMLStreamException
writer.writeEndElement();
@Override
public void writeEntityRef(String name) throws XMLStreamException
writer.writeEntityRef(name);
@Override
public void writeNamespace(String prefix, String namespaceURI)
throws XMLStreamException
writer.writeNamespace(prefix, namespaceURI);
@Override
public void writeProcessingInstruction(String target, String data)
throws XMLStreamException
writer.writeProcessingInstruction(target, data);
@Override
public void writeProcessingInstruction(String target)
throws XMLStreamException
writer.writeProcessingInstruction(target);
@Override
public void writeStartDocument() throws XMLStreamException
writer.writeStartDocument();
@Override
public void writeStartDocument(String encoding, String version)
throws XMLStreamException
writer.writeStartDocument(encoding, version);
@Override
public void writeStartDocument(String version) throws XMLStreamException
writer.writeStartDocument(version);
@Override
public void writeStartElement(String prefix, String localName,
String namespaceURI) throws XMLStreamException
writer.writeStartElement("", localName, namespaceURI);
if(null != namespaceURI && namespaceURI.length() > 0)
String currentDefaultNS = nc.getNamespaceURI("");
if(!namespaceURI.equals(currentDefaultNS))
writeDefaultNamespace(namespaceURI);
nc.setDefaultNS(namespaceURI);
@Override
public void writeStartElement(String namespaceURI, String localName)
throws XMLStreamException
writer.writeStartElement(namespaceURI, localName);
@Override
public void writeStartElement(String localName) throws XMLStreamException
writer.writeStartElement(localName);
public static class ProxyNameSpaceContext implements NamespaceContext
private String defaultNS = "";
public void setDefaultNS(String ns)
defaultNS = ns;
@Override
public String getNamespaceURI(String prefix)
if("".equals(prefix))
return defaultNS;
return null;
@Override
public String getPrefix(String namespaceURI)
return "";
@Override
public Iterator<?> getPrefixes(String namespaceURI)
return null;
【讨论】：
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