使用java更改xml标记的值

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

public static void changeXMLTagValue(String filePath, String tagName, String newValue) {
    try {
        // 创建DOM解析器工厂
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        // 创建DOM解析器
        DocumentBuilder builder = factory.newDocumentBuilder();
        // 加载XML文件到Document对象
        Document document = builder.parse(filePath);

        // 获取要修改的标记
        NodeList nodeList = document.getElementsByTagName(tagName);
        if (nodeList.getLength() > 0) {
            Node tagNode = nodeList.item(0);
            if (tagNode.getNodeType() == Node.ELEMENT_NODE) {
                Element element = (Element) tagNode;
                // 修改标记的值
                element.setTextContent(newValue);
            }
        }

        // 将修改后的Document对象保存到XML文件
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMSource source = new DOMSource(document);
        StreamResult result = new StreamResult(filePath);
        transformer.transform(source, result);
        
        System.out.println("XML标记值修改成功！");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static void main(String[] args) {
    String filePath = "path/to/xml/file.xml";  // 替换为你的XML文件路径
    String tagName = "tagToChange";  // 替换为要修改的标记名
    String newValue = "new value";  // 替换为要设置的新值
    changeXMLTagValue(filePath, tagName, newValue);
}