Java XLM按名称获取元素

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

public class XMLParser {
    public static void main(String[] args) {
        try {
            // 创建解析器工厂
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            // 创建解析器
            DocumentBuilder builder = factory.newDocumentBuilder();
            // 解析XML文件
            Document document = builder.parse(new File("example.xml"));
            
            // 获取根元素
            Element root = document.getDocumentElement();
            
            // 按名称获取元素
            NodeList nodeList = root.getElementsByTagName("elementName");
            
            // 遍历获取到的元素
            for (int i = 0; i < nodeList.getLength(); i++) {
                Element element = (Element) nodeList.item(i);
                // 处理元素数据
                String textContent = element.getTextContent();
                System.out.println(textContent);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}