如何将xml中的编码文档字符转换为文本？

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class XmlDecoder {
    public static void main(String[] args) {
        String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><root>&#x4F60;&#x597D;</root>";

        try {
            // 创建XML解析器
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = factory.newDocumentBuilder();

            // 将XML字符串转换为输入流
            InputStream inputStream = new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8));

            // 解析XML文档
            Document document = builder.parse(inputStream);

            // 获取根节点
            Node root = document.getDocumentElement();

            // 获取根节点的文本内容
            String text = root.getTextContent();

            System.out.println("转换后的文本内容：" + text);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}