在java中解析XML时没有工作ID属性

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

public class XMLParser {
    public static void main(String[] args) {
        try {
            // 创建DocumentBuilderFactory实例
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            // 创建DocumentBuilder实例
            DocumentBuilder builder = factory.newDocumentBuilder();
            // 解析XML文件
            Document document = builder.parse(new File("path/to/your/file.xml"));
            // 获取根元素
            Element root = document.getDocumentElement();
            // 获取所有item元素
            NodeList items = root.getElementsByTagName("item");
            
            for (int i = 0; i < items.getLength(); i++) {
                Element item = (Element) items.item(i);
                // 获取ID属性
                String id = item.getAttribute("id");
                System.out.println("Item ID: " + id);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}