使用Java Apache POI更新excel文件中的单元格

import org.apache.poi.ss.usermodel.*;

public class ExcelUpdater {
    public static void main(String[] args) {
        String filePath = "path/to/excel/file.xlsx";
        int sheetIndex = 0;
        int rowIndex = 0;
        int cellIndex = 0;
        String newValue = "New Value";

        try {
            // 创建工作簿对象
            Workbook workbook = WorkbookFactory.create(new File(filePath));

            // 获取工作表对象
            Sheet sheet = workbook.getSheetAt(sheetIndex);

            // 获取单元格对象
            Row row = sheet.getRow(rowIndex);
            Cell cell = row.getCell(cellIndex);

            // 更新单元格内容
            cell.setCellValue(newValue);

            // 保存文件
            FileOutputStream outputStream = new FileOutputStream(filePath);
            workbook.write(outputStream);
            outputStream.close();

            System.out.println("Excel文件更新成功！");
        } catch (IOException | EncryptedDocumentException ex) {
            ex.printStackTrace();
        }
    }
}