如何使用java查找xlsx中的空白单元格

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;
import java.io.IOException;

try {
    FileInputStream file = new FileInputStream("path/to/your/file.xlsx");
    Workbook workbook = new XSSFWorkbook(file);
    Sheet sheet = workbook.getSheetAt(0); // 获取第一个工作表
    // 其他操作...
    file.close();
} catch (IOException e) {
    e.printStackTrace();
}

for (Row row : sheet) {
    for (Cell cell : row) {
        if (cell.getCellType() == CellType.BLANK) {
            // 处理空白单元格
            int rowIndex = row.getRowNum();
            int columnIndex = cell.getColumnIndex();
            System.out.println("空白单元格位置：行 " + rowIndex + "，列 " + columnIndex);
        }
    }
}