java - 使用 Java 读取 Excel 工作表时出错

Question

我正在使用 NetBeans 6.9.1 处理 Spring/Hibernet。我正在尝试读取 Excel 文件 (.xlsx- Office 2007)。读取 Excel 文件的代码如下，使用 Vactor 存储 Excel 工作表中的数据。

import java.io.FileInputStream;
import java.util.Iterator;
import java.util.Vector;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.NewHibernateUtil;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.hibernate.Session;
import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

private Vector importExcelSheet(ModelAndView mv)
{
    Vector cellVectorHolder = new Vector();
    try
    {         
        HSSFWorkbook myWorkBook = new HSSFWorkbook(new POIFSFileSystem(new FileInputStream("E:/Project/SpringHibernet/MultiplexTicketBookingNew/web/excelSheets/Country.xlsx")));
        HSSFSheet mySheet = myWorkBook.getSheetAt(0);
        Iterator rowIter = mySheet.rowIterator();
        System.out.println(mySheet.getRow(1).getCell(0));
        while(rowIter.hasNext())
        {
            HSSFRow myRow = (HSSFRow) rowIter.next();
            Iterator cellIter = myRow.cellIterator();
            Vector cellStoreVector=new Vector();
            while(cellIter.hasNext())
            {
                HSSFCell myCell = (HSSFCell) cellIter.next();
                cellStoreVector.addElement(myCell);
            }
            cellVectorHolder.addElement(cellStoreVector);
        }
    }
    catch (Exception e)
    {
        mv.addObject("msg", e.getMessage());
    }
    return cellVectorHolder;
}

下面是我的Controller中的一个方法调用上面的方法读取指定的Excel文件

---

@Override
protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception
{
    ModelAndView mv=new ModelAndView();

    try
    {
        if(request.getParameter("import")!=null)
        {
            session=NewHibernateUtil.getSessionFactory().getCurrentSession();
            session.beginTransaction();

            Vector dataHolder=importExcelSheet(mv);
            for (int i=0;i<dataHolder.size(); i++)
            {
                Vector cellStoreVector=(Vector)dataHolder.elementAt(i);
                for (int j=0; j < cellStoreVector.size();j++)
                {
                    HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j);
                    String st = myCell.toString();
                    System.out.println(st.substring(0,1)+"\t");
                }
                System.out.println();
            }

            session.flush();
            session.getTransaction().commit();
        }
    }
    catch (Exception e)
    {
        mv.addObject("msg", e.getMessage());
    }
    return mv;
}

执行这段代码时，会抛出以下异常。

The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)

是我使用了错误的来源还是上面的代码有其他问题？解决方案是什么？

代码取自here .

Answer 1

您的代码目前明确要求 HSSF，因此只能使用较旧的 .xls(二进制)文件。

如果需要，您可以要求 POI 自动检测您拥有的文件类型，并根据您的情况选择合适的 HSSF 或 XSSF。但是，要做到这一点，您需要稍微更改您的代码，并使用接口(interface)而不是具体类(因此无论您获得 HSSF 还是 XSSF 对象，您的代码都可以工作)

POI 网站有一个 guide to making these changes这应该指导你完成。

例如，当您执行此操作时，您的前几行是:

    HSSFWorkbook myWorkBook = new HSSFWorkbook(new POIFSFileSystem(new FileInputStream("E:/Project/SpringHibernet/MultiplexTicketBookingNew/web/excelSheets/Country.xlsx")));
    HSSFSheet mySheet = myWorkBook.getSheetAt(0);
    Iterator rowIter = mySheet.rowIterator();
    System.out.println(mySheet.getRow(1).getCell(0));

在新系统中会变成:

    Workbook wb = WorkbookFactory.create(new File("/path/to/your/excel/file"));
    Sheet mySheet = wb.getSheetAt(0);
    Iterator<Row> rowIter = mySheet.rowIterator();
    System.out.println(mySheet.getRow(1).getCell(0));

这将适用于 .xls 和 .xlsx 文件