使用Java提取XML的所有重复元素

Question

我的XML如下所示，我需要在其中提取多个ID元素输出xml：-

<?xml version="1.0" encoding="utf-8"?>
<Stock>
    <PIdentification>
    <CatalogVersion></CatalogVersion>
    <AccountID></AccountID>
    <CustomerId></CustomerId>
    </ProviderIdentification>
    <Product>
        <ArticleName>Monitors</ArticleName>
        <BaseUnit></BaseUnit>
        <Notes></Notes>
        <ID>11f13e2e-ae97-45b5-a9a9-23fa7f6bb767</ID>
        <ID>b22834c0-a570-4e6b-97c3-5067a14d118d</ID>
        <ID>ed458593-5e1a-4dc1-94f0-a66eeef2dd79</ID>
        <ID>d25584a9-1db2-48cf-9a70-9b81e5a7e7f2</ID>
    </Product>
</Stock>

我已经使用“ Nodelist”提取“ ID”，但是我只得到一个元素而不是全部4，下面是代码的一部分：-

{   
    Node IDNode = element.getElementsByTagName("ID").item(0);
    IDXml = toStringXml(IDNode , true);
}

我无法重申要获得所有ID的外观，请让我知道如何获取所有ID，不胜感激。

    private static String toStringXml(Node elt, boolean xmlDeclaration) 
    throws TransformerException {
     TransformerFactory transformerFactory = TransformerFactory
        .newInstance();
    Transformer transformer = transformerFactory.newTransformer();

    if(xmlDeclaration)
    transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
    DOMSource source = new DOMSource(elt);
    StreamResult result = new StreamResult(new StringWriter());
    transformer.transform(source, result);

    return result.getWriter().toString();
    }

Answer 1

File xmlFile = new File("src/main/resources/example.xml");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();

DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document element = dBuilder.parse(xmlFile);

NodeList list = element.getElementsByTagName("ID");
for (int i = 0; i < list.getLength(); i++){
    Node specificIDNode = list.item(i);
    System.out.println(specificIDNode.getTextContent());
}