网页上传excel文件到服务器，服务端用NPOI解析excel
aspx：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MyLoad.aspx.cs" Inherits="UpdateAddi_MyLoad" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table style="width: 343px">
<tr>
<td style="width: 100px">单文件上传</td>
<td style="width: 100px"></td>
</tr>
<tr>
<td style="width: 100px">
<asp:FileUpload ID="FileUpload1" runat="server" Width="475px" />
</td>
<td style="width: 100px">
<asp:Button ID="bt_upload" runat="server" OnClick="bt_upload_Click" Text="上传" />
</td>
</tr>
<tr>
<td style="width: 100px; height: 21px;">
<asp:TextBox TextMode="MultiLine" ID="lb_info" runat="server" ForeColor="Red" Width="1000px" Height="1000px"></asp:TextBox>
</td>
<td style="width: 100px; height: 21px">
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
aspx.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Data.OleDb;
using System.IO;
using Agiso.DBAccess;
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using NPOI.XSSF.UserModel;
public partial class UpdateAddi_MyLoad : System.Web.UI.Page
{
string serverpath = "";
DataTable data = null;
DataTable oldData = null;
string cellValue = "";
string dataLabel = "";
protected void Page_Load(object sender, EventArgs e)
{
}
protected void bt_upload_Click(object sender, EventArgs e)
{
try
{
if (FileUpload1.PostedFile.FileName == "")
{
this.lb_info.Text = "请选择文件！";
}
else
{
string filepath = FileUpload1.PostedFile.FileName;
string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);
serverpath = Server.MapPath("../files/UploadFile/") + filename;
FileUpload1.PostedFile.SaveAs(serverpath);
this.lb_info.Text += "文件路径=" + filepath;
this.lb_info.Text += "上传成功！";
data = GetDataFromExcelByNPOI();
this.lb_info.Text = "";
//取出所有标题
for (int i = 0; i < data.Columns.Count; i++)
{
lb_info.Text += ("{" + data.Columns[i] + "}");
}
lb_info.Text += "\r\n";
lb_info.Text += "//---------以上是标题，以下是单元格---------------------------";
lb_info.Text += "\r\n";
//取出所有标题以外的单元格
for (int i = 0; i < data.Rows.Count; i++)
{
for (int j = 0; j < data.Columns.Count; j++)
{
if (data.Rows[i][j].ToString() == "")
{
cellValue = "------";
}
else
{
cellValue = data.Rows[i][j].ToString();
}
lb_info.Text += ("{" + cellValue + "}");
}
lb_info.Text += "\r\n";
}
}
//读取数据库
oldData = GetOrderData();
for (int k = 0; k < oldData.Rows.Count; k++)
{
for (int v = 0; v < oldData.Columns.Count; v++)
{
switch(v)
{
case 0:
dataLabel="NumIid=";
break;
case 1:
dataLabel="Title=";
break;
case 2:
dataLabel="PicUrl=";
break;
case 3:
dataLabel="OuterId=";
break;
case 4:
dataLabel="Additional=";
break;
default:
break;
}
lb_info.Text+=dataLabel;
lb_info.Text += oldData.Rows[k][v].ToString();
lb_info.Text += "\r\n";
}
}
}
catch (Exception ex)
{
this.lb_info.Text = "上传发生错误！原因是：" + ex.ToString();
}
}
DataTable GetOrderData()
{
IDbAccess db = DbAccessDAL.CreateDbAccess();
return db.ExecuteTable(string.Format("SELECT NumIid, Title, PicUrl,OuterId, Additional FROM AutoDummySendItemDefine WHERE Nick={0}", DbUtil.ToSqlString("***")));
}
DataTable GetDataFromExcelByNPOI()
{
IWorkbook workbook;
if (serverpath == "") return null;
string fileType = Path.GetExtension(serverpath);
using (FileStream file = new FileStream(serverpath, FileMode.Open, FileAccess.Read))
{
if (fileType == ".xls")
{
workbook = new HSSFWorkbook(file);
}
else if (fileType == ".xlsx")
{
workbook = new XSSFWorkbook(file);
}
else
{
return null;
}
ISheet sheet = workbook.GetSheetAt(0);//取第一个表
DataTable table = new DataTable();
IRow headerRow = sheet.GetRow(0);
int cellCount = headerRow.LastCellNum;
int rowCount = sheet.LastRowNum;
for (int i = headerRow.FirstCellNum; i < cellCount; i++)
{
DataColumn column = new DataColumn(headerRow.GetCell(i).ToString());
table.Columns.Add(column);
}
for (int i = (sheet.FirstRowNum + 1); i <= rowCount; i++)
{
IRow row = sheet.GetRow(i);
DataRow dataRow = table.NewRow();
if (row != null)
{
for (int j = row.FirstCellNum; j < cellCount; j++)
{
if (row.GetCell(j) != null)
dataRow[j] = GetCellValue(row.GetCell(j));
}
}
table.Rows.Add(dataRow);
}
return table;
}
}
private object GetCellValue(ICell cell)
{
object value = null;
try
{
if (cell.CellType != CellType.Blank)
{
switch (cell.CellType)
{
case CellType.Numeric:
// Date comes here
if (DateUtil.IsCellDateFormatted(cell))
{
value = cell.DateCellValue;
}
else
{
// Numeric type
value = cell.NumericCellValue;
}
break;
case CellType.Boolean:
// Boolean type
value = cell.BooleanCellValue;
break;
case CellType.Formula:
value = cell.CellFormula;
break;
default:
// String type
value = cell.StringCellValue;
break;
}
}
}
catch (Exception)
{
value = "";
}
return value;
}
}