如果子节点不同，则java xpath表达式仅获取值

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.*;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;

public class XPathExample {
    public static void main(String[] args) throws Exception {
        // 加载XML文档
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        Document document = factory.newDocumentBuilder().parse("example.xml");

        // 创建XPath对象
        XPath xpath = XPathFactory.newInstance().newXPath();

        // 编译XPath表达式
        XPathExpression expression = xpath.compile("//book/title");

        // 执行XPath查询
        NodeList nodeList = (NodeList) expression.evaluate(document, XPathConstants.NODESET);

        // 遍历查询结果
        for (int i = 0; i < nodeList.getLength(); i++) {
            System.out.println(nodeList.item(i).getTextContent());
        }
    }
}