用Java编写Excel文件

Question

我用Apache POI创建了Excel文件.

在我的数据库中,我有一个400人的列表.我想将他们的姓名和姓氏写入该Excel文件.

这是我的代码示例:

try {
    FileOutputStream fileOut = new FileOutputStream("C:/testExcelForJava/test.xls");
    HSSFWorkbook workbook = new HSSFWorkbook();
    HSSFSheet worksheet = workbook.createSheet("POI Worksheet");

    // index from 0,0... cell A1 is cell(0,0)
    HSSFRow row1 = worksheet.createRow((short) 0);

    HSSFCell cellA1 = row1.createCell((short) 0);
    cellA1.setCellValue("Ad");
    HSSFCellStyle cellStyle = workbook.createCellStyle();
    cellStyle.setFillForegroundColor(HSSFColor.GOLD.index);
    cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
    cellA1.setCellStyle(cellStyle);

    HSSFCell cellB1 = row1.createCell((short) 1);
    cellB1.setCellValue("Soyad");
    cellStyle = workbook.createCellStyle();
    cellStyle.setFillForegroundColor(HSSFColor.GOLD.index);
    cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
    cellB1.setCellStyle(cellStyle);

    List<Driver> driverList = Dao.driverDao.queryForAll();

    for(Driver driver :driverList){

        String name = driver.getName();
        String surname = driver.getSurname();
        String birthDay = driver.getBirthDay();

        cellA1.setCellValue(name);
        cellB1.setCellValue(surname);
    }

    workbook.write(fileOut);
    fileOut.flush();
    fileOut.close();
} catch(FileNotFoundException e){
    e.printStackTrace();
    log.error(e.getMessage());

} catch(IOException e){
    e.printStackTrace();
    log.error(e.getMessage());
}

当我查看我的Excel文件时,我只看到列表的最后一个人.

我怎样才能写出我所有人的信息？

谢谢

Answer 1

如果不完全阅读代码,似乎你在覆盖循环中的单元格A1和B1的值:

for(Driver driver :driverList){

    String name = driver.getName();
    String surname = driver.getSurname();
    String birthDay = driver.getBirthDay();

    cellA1.setCellValue(name); //the same cell as before!!!
    cellB1.setCellValue(surname); //the same cell as before!!!
}

我假设您也想要更改循环中的单元格,例如,将所有行和单元格创建代码放入循环中,并在每次迭代中推进行索引.