The supplied data appears to be in the Office 2007+ XML
错误原文
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)该错误是由于使用HSSFWorkbook 操作Excel2007引起的。
解决方法如下：
使用HSSFWorkbook操作Excel2003，
使用XSSFWorkbook操作Excel2007。
首先加入引用：
using XLS=NPOI.HSSF.UserModel;//读取Excel2003
using XLSX=NPOI.XSSF.UserModel;//读取Excel2007读取方法：
public void ProcessRequest(HttpContext context)
{
HttpFileCollection files = context.Request.Files;
if (files.Count > 0)
{
//设置文件名
string fileNewName = guid + "_" + System.IO.Path.GetFileName(files[0].FileName);
//保存文件
string path = context.Server.MapPath("/upload/" + fileNewName);
string newPath = path;
files[0].SaveAs(path);
DataTable dt = new DataTable();
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
if (fileNewName.EndsWith(".xls"))
{
dt = ExcelToTableForXLS(fs);//从XLS文件(excel2003)读取数据
}
if (fileNewName.EndsWith(".xlsx"))
{
dt = ExcelToTableForXLSX(fs);//从XLSX文件(excel2007)读取数据
}
if (dt != null && dt.Rows.Count > 0)
{
//其他操作
}
}
}
///
/// 读取数据到XLSX文件(excel2007)
///
///
///
/// 读取数据到XLS文件(excel2003)
///
///
///