如何使用Java从Excel(XSLX)构建XML

import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xssf.eventusermodel.XSSFReader;
import org.apache.poi.xssf.model.SharedStringsTable;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;

public class ExcelContentHandler extends DefaultHandler {
    // 重写方法，处理XML事件
}

OPCPackage pkg = OPCPackage.open("path/to/excel/file.xlsx");
XSSFReader xssfReader = new XSSFReader(pkg);
SharedStringsTable sst = xssfReader.getSharedStringsTable();
XMLReader parser = XMLReaderFactory.createXMLReader();
ContentHandler handler = new ExcelContentHandler(sst);
parser.setContentHandler(handler);
parser.parse(new InputSource(xssfReader.getSheetsData().next()));

@Override
public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
    // 处理元素开始事件
}

@Override
public void endElement(String uri, String localName, String name) throws SAXException {
    // 处理元素结束事件
}

@Override
public void characters(char[] ch, int start, int length) throws SAXException {
    // 处理文本内容
}

DocumentBuilderFactory documentFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();

// 创建XML文档
Element rootElement = document.createElement("root");
document.appendChild(rootElement);

// 将解析的数据添加到XML文档中
// ...

// 将XML文档保存到文件中
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(new File("output.xml"));
transformer.transform(source, result);