我认为您将#text
node (介于<RootElement>
and之间<Achild>
)作为第一个孩子(这是很常见的错误),例如:
final Node parentNode = doc.getDocumentElement();
Node childElement = parentNode.getFirstChild();
System.out.println(childElement.getNodeName());
回报:
#text
改用:
final Node parentNode = doc.getDocumentElement();
NodeList childElements = parentNode.getChildNodes();
for (int i = 0; i < childElements.getLength(); ++i)
{
Node childElement = childElements.item(i);
if (childElement instanceof Element)
System.out.println(childElement.getNodeName());
}
想要的结果:
Achild
编辑:
还有第二种使用DocumentBuilderFactory.setIgnoringElementContentWhitespace
方法:
factory.setIgnoringElementContentWhitespace(true);
但是,这只适用于验证模式,因此您需要在 XML 文档中提供 DTD:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE RootElement [
<!ELEMENT RootElement (Achild)+>
<!ELEMENT Achild (#PCDATA)>
]>
<RootElement>
<Achild>some text</Achild>
</RootElement>
并设置factory.setValidating(true)
。完整示例:
final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
factory.setIgnoringElementContentWhitespace(true);
final DocumentBuilder builder = factory.newDocumentBuilder();
final Document doc = builder.parse("input.xml");
final Node rootNode = doc.getDocumentElement();
final Element childElement = (Element) rootNode.getFirstChild();
System.out.println(childElement.getNodeName());
Wanted result with original code:
Achild