如何在Java中从XML读取带有等号的属性标记？

import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

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

public class ReadXMLWithEqualSign {
    public static void main(String[] args) {
        try {
            File inputFile = new File("input.xml");
            DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();
            Document document = documentBuilder.parse(inputFile);

            NodeList nodes = document.getElementsByTagName("item");
            for (int i = 0; i< nodes.getLength(); i++) {
                String attributeValue = nodes.item(i).getAttributes().getNamedItem("attribute").getNodeValue();
                System.out.println("Attribute value: " + attributeValue);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}