如何在Java中删除XML Dom中的多余缩进

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class RemoveIndentation {
    public static void main(String[] args) {
        try {
            // 加载XML文件并构建DOM树
            Document document = DocumentHelper.parse(new File("input.xml"));

            // 遍历DOM树，删除多余缩进的节点
            removeIndentation(document.getRootElement());

            // 将修改后的DOM树保存为XML文件
            OutputFormat format = OutputFormat.createPrettyPrint();
            format.setIndentSize(4);  // 设置缩进大小
            XMLWriter writer = new XMLWriter(new FileWriter("output.xml"), format);
            writer.write(document);
            writer.close();

            System.out.println("删除多余缩进成功");
        } catch (DocumentException | IOException e) {
            e.printStackTrace();
        }
    }

    private static void removeIndentation(Element element) {
        for (Element child : element.elements()) {
            removeIndentation(child);
        }

        if (element.nodeCount() == 1 && element.getTextTrim().isEmpty()) {
            element.detach();  // 删除多余缩进的节点
        }
    }
}