在循环中组合xmls文件并删除不需要的节点

import org.w3c.dom.*;
import javax.xml.parsers.*;
import java.io.*;

public class XMLCombination {
    public static void main(String[] args) {
        try {
            // 创建结果XML文档
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            Document resultDoc = db.newDocument();
            Element rootElement = resultDoc.createElement("root");
            resultDoc.appendChild(rootElement);

            // 循环读取和处理XML文件
            for (int i = 1; i <= 10; i++) {
                // 读取XML文件
                File xmlFile = new File("file" + i + ".xml");
                DocumentBuilderFactory dbf2 = DocumentBuilderFactory.newInstance();
                DocumentBuilder db2 = dbf2.newDocumentBuilder();
                Document doc = db2.parse(xmlFile);

                // 获取根节点
                Element root = doc.getDocumentElement();

                // 删除不需要的节点
                NodeList nodesToDelete = root.getElementsByTagName("nodeToDelete");
                for (int j = 0; j < nodesToDelete.getLength(); j++) {
                    Node node = nodesToDelete.item(j);
                    node.getParentNode().removeChild(node);
                }

                // 将节点添加到结果XML文档中
                Node importedNode = resultDoc.importNode(root, true);
                rootElement.appendChild(importedNode);
            }

            // 保存结果XML文档到文件
            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer transformer = tf.newTransformer();
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
            transformer.transform(new DOMSource(resultDoc), new StreamResult(new File("result.xml")));

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