使用java根据属性值追加或替换XML元素

import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

public class XMLManipulation {
    public static void main(String[] args) {
        try {
            // 加载XML文件
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            Document document = builder.parse("input.xml");

            // 定位到需要追加或替换的元素
            XPath xpath = XPathFactory.newInstance().newXPath();
            XPathExpression expr = xpath.compile("//element[@attribute='value']");
            Node targetNode = (Node) expr.evaluate(document, XPathConstants.NODE);

            // 追加元素
            Element newElement = document.createElement("newElement");
            newElement.setAttribute("attribute", "value");
            newElement.setTextContent("New Element Content");
            targetNode.appendChild(newElement);

            // 替换元素
            Element replaceElement = document.createElement("replaceElement");
            replaceElement.setAttribute("attribute", "value");
            replaceElement.setTextContent("Replacement Element Content");
            targetNode.getParentNode().replaceChild(replaceElement, targetNode);

            // 保存修改后的XML文档
            Transformer transformer = TransformerFactory.newInstance().newTransformer();
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
            DOMSource source = new DOMSource(document);
            StreamResult result = new StreamResult("output.xml");
            transformer.transform(source, result);

            System.out.println("XML manipulation completed.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}