XMLEventWriter从头开始:如何发出xmlns属性?

使用属性 IS_REPAIRING_NAMESPACES

XMLEventFactory events = XMLEventFactory.newInstance();
QName bar = new QName("urn:bar", "bar");
XMLOutputFactory factory = XMLOutputFactory.newInstance();
factory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, true);
XMLEventWriter writer = factory.createXMLEventWriter(System.out);
writer.add(events.createStartDocument());
writer.setDefaultNamespace("urn:bar");
writer.add(events.createStartElement(bar, null, null));
writer.add(events.createEndDocument());
writer.flush();

以上代码发出:

<?xml version="1.0"?><bar xmlns="urn:bar"></bar>

使用“write*”而不是“set*”

javax.xml.stream.XMLStreamWriter.writeDefaultNamespace(String)