如何在xml中查找标签信息

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;

public class XMLParserExample {
    public static void main(String[] args) {
        try {
            // 步骤1：解析XML文档
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();
            Document document = builder.parse("example.xml"); // 替换为实际的XML文件路径

            // 步骤2：定位目标标签
            XPath xPath = XPathFactory.newInstance().newXPath();
            String expression = "//title";
            NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(document, XPathConstants.NODESET);

            // 步骤3：获取标签内容
            for (int i = 0; i < nodeList.getLength(); i++) {
                Node node = nodeList.item(i);
                String title = node.getTextContent();
                System.out.println("Title: " + title);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}