未获取XML的所有节点值

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

public class XMLParser {
    public static void main(String[] args) {
        try {
            // 创建DOM解析器工厂
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            // 创建DOM解析器
            DocumentBuilder builder = factory.newDocumentBuilder();
            // 解析XML文档
            Document document = builder.parse(new File("example.xml"));
            
            // 获取根节点
            Element root = document.getDocumentElement();
            
            // 遍历所有节点
            NodeList nodeList = root.getElementsByTagName("*");
            for (int i = 0; i < nodeList.getLength(); i++) {
                Node node = nodeList.item(i);
                // 获取节点值
                String value = node.getTextContent();
                // 打印节点值
                System.out.println(value);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}