我想使用DOM api
从以下XML文档中删除包装器<hs:PageWrapper>
<div id="botton1"/>
<div id="botton2"/>
</hs:PageWrapper>
所以我只将这些作为最终输出:
<div id="botton1"/>
<div id="botton2"/>
我如何用Java做到这一点?
答案 0 :(得分:4)
您要做的事情不会产生格式良好的XML,因为文档根目录中会有2个元素。但是,下面是代码来执行您想要的操作。它获取包装元素的子节点,为每个节点创建一个新文档,将节点导入文档并将文档写入String。
public String peel(String xmlString) {
StringWriter writer = new StringWriter();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new InputSource(new StringReader(
xmlString)));
NodeList nodes = document.getDocumentElement().getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
Node n = nodes.item(i);
Document d = builder.newDocument();
Node newNode = d.importNode(n, true);
d.insertBefore(newNode, null);
writeOutDOM(d, writer);
}
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
return writer.toString();
}
protected void writeOutDOM(Document doc, Writer writer)
throws TransformerFactoryConfigurationError, TransformerException {
Result result = new StreamResult(writer);
DOMSource domSource = new DOMSource(doc);
Transformer transformer = TransformerFactory.newInstance()
.newTransformer();
transformer.setOutputProperty("omit-xml-declaration", "yes");
transformer.transform(domSource, result);
}