打印 org.w3c.dom. Document 到 stdout 的最短方法是什么？

小开

最佳答案

Call printDocument(doc, System.out), where that method looks like this:

public static void printDocument(Document doc, OutputStream out) throws IOException, TransformerException {
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");


transformer.transform(new DOMSource(doc),
new StreamResult(new OutputStreamWriter(out, "UTF-8")));
}

(The indent-amount is optional, and might not work with your particular configuration)

小开

How about:

OutputFormat format = new OutputFormat(doc);
format.setIndenting(true);
XMLSerializer serializer = new XMLSerializer(System.out, format);
serializer.serialize(doc);

小开

private void printNode(Node rootNode, String spacer) {
System.out.println(spacer + rootNode.getNodeName() + " -> " + rootNode.getNodeValue());
NodeList nl = rootNode.getChildNodes();
for (int i = 0; i < nl.getLength(); i++)
printNode(nl.item(i), spacer + "   ");
}

小开

Try jcabi-xml with one liner:

String xml = new XMLDocument(document).toString();

This is the dependency you need:

<dependency>
<groupId>com.jcabi</groupId>
<artifactId>jcabi-xml</artifactId>
<version>0.14</version>
</dependency>

小开

This will return a nicely formated output by using recursive descent/ascent.

private static boolean skipNL;
private static String printXML(Node rootNode) {
String tab = "";
skipNL = false;
return(printXML(rootNode, tab));
}
private static String printXML(Node rootNode, String tab) {
String print = "";
if(rootNode.getNodeType()==Node.ELEMENT_NODE) {
print += "\n"+tab+"<"+rootNode.getNodeName()+">";
}
NodeList nl = rootNode.getChildNodes();
if(nl.getLength()>0) {
for (int i = 0; i < nl.getLength(); i++) {
print += printXML(nl.item(i), tab+"  ");    // \t
}
} else {
if(rootNode.getNodeValue()!=null) {
print = rootNode.getNodeValue();
}
skipNL = true;
}
if(rootNode.getNodeType()==Node.ELEMENT_NODE) {
if(!skipNL) {
print += "\n"+tab;
}
skipNL = false;
print += "</"+rootNode.getNodeName()+">";
}
return(print);
}

小开

if you use dom4j, it would be dom4JDOM.asString()