這篇文章給大家分享的是有關(guān)mvc如何導(dǎo)入excel的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來看看吧。

準(zhǔn)備工作:
1.在項(xiàng)目中添加對NPOI的引用,NPOI下載地址:http://npoi.codeplex.com/releases/view/38113
2.NPOI學(xué)習(xí)
NPOI下載,里面有五個(gè)dll,需要引用到你的項(xiàng)目,我這邊用的mvc4+三層的方式架構(gòu)的項(xiàng)目
我用的工具是(vs2012+sql2014)
準(zhǔn)備工作做完,我們開始進(jìn)入主題
1.前端頁面,代碼:
<div class="filebtn">
@using (Html.BeginForm("importexcel", "foot", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<samp>請選擇要上傳的Excel文件:</samp>
<span id="txt_Path"></span>
<strong>選擇文件<input name="file" type="file" id="file" /></strong>@*
@Html.AntiForgeryToken() //防止跨站請求偽造(CSRF:Cross-site request forgery)攻擊
*@<input type="submit" id="ButtonUpload" value="提交" class="offer"/>
}
</div>2.接下來就是控制器
public class footController : Controller
{
//
// GET: /foot/
private static readonly String Folder = "/files";
public ActionResult excel()
{
return View();
}
/// 導(dǎo)入excel文檔
public ActionResult importexcel()
{
//1.接收客戶端傳過來的數(shù)據(jù)
HttpPostedFileBase file = Request.Files["file"];
if (file == null || file.ContentLength <= 0)
{
return Json("請選擇要上傳的Excel文件", JsonRequestBehavior.AllowGet);
}
//string filepath = Server.MapPath(Folder);
//if (!Directory.Exists(filepath))
//{
// Directory.CreateDirectory(filepath);
//}
//var fileName = Path.Combine(filepath, Path.GetFileName(file.FileName));
// file.SaveAs(fileName);
//獲取一個(gè)streamfile對象,該對象指向一個(gè)上傳文件,準(zhǔn)備讀取改文件的內(nèi)容
Stream streamfile = file.InputStream;
DataTable dt = new DataTable();
string FinName = Path.GetExtension(file.FileName);
if (FinName != ".xls" && FinName != ".xlsx")
{
return Json("只能上傳Excel文檔",JsonRequestBehavior.AllowGet);
}
else
{
try
{
if (FinName == ".xls")
{
//創(chuàng)建一個(gè)webbook,對應(yīng)一個(gè)Excel文件(用于xls文件導(dǎo)入類)
HSSFWorkbook hssfworkbook = new HSSFWorkbook(streamfile);
dt = excelDAL.ImExport(dt, hssfworkbook);
}
else
{
XSSFWorkbook hssfworkbook = new XSSFWorkbook(streamfile);
dt = excelDAL.ImExport(dt, hssfworkbook);
}
return Json("",JsonRequestBehavior.AllowGet);
}
catch(Exception ex)
{
return Json("導(dǎo)入失敗 !"+ex.Message, JsonRequestBehavior.AllowGet);
}
}
}
}3.業(yè)務(wù)邏輯層[excelDAL]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NPOI;
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using System.Data;
using NPOI.XSSF.UserModel;
namespace GJL.Compoent
{
public class excelDAL
{
///<summary>
/// #region 兩種不同版本的操作excel
/// 擴(kuò)展名*.xlsx
/// </summary>
public static DataTable ImExport(DataTable dt, XSSFWorkbook hssfworkbook)
{
NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0);
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++)
{
dt.Columns.Add(sheet.GetRow(0).Cells[j].ToString());
}
while (rows.MoveNext())
{
XSSFRow row = (XSSFRow)rows.Current;
DataRow dr = dt.NewRow();
for (int i = 0; i < row.LastCellNum; i++)
{
NPOI.SS.UserModel.ICell cell = row.GetCell(i);
if (cell == null)
{
dr[i] = null;
}
else
{
dr[i] = cell.ToString();
}
}
dt.Rows.Add(dr);
}
dt.Rows.RemoveAt(0);
if (dt!=null && dt.Rows.Count != 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
string categary = dt.Rows[i]["頁面"].ToString();
string fcategary = dt.Rows[i]["分類"].ToString();
string fTitle = dt.Rows[i]["標(biāo)題"].ToString();
string fUrl = dt.Rows[i]["鏈接"].ToString();
FooterDAL.Addfoot(categary, fcategary, fTitle, fUrl);
}
}
return dt;
}
#region 兩種不同版本的操作excel
///<summary>
/// 擴(kuò)展名*.xls
/// </summary>
public static DataTable ImExport(DataTable dt, HSSFWorkbook hssfworkbook)
{
// 在webbook中添加一個(gè)sheet,對應(yīng)Excel文件中的sheet,取出第一個(gè)工作表,索引是0
NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0);
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++)
{
dt.Columns.Add(sheet.GetRow(0).Cells[j].ToString());
}
while (rows.MoveNext())
{
HSSFRow row = (HSSFRow)rows.Current;
DataRow dr = dt.NewRow();
for (int i = 0; i < row.LastCellNum; i++)
{
NPOI.SS.UserModel.ICell cell = row.GetCell(i);
if (cell == null)
{
dr[i] = null;
}
else
{
dr[i] = cell.ToString();
}
}
dt.Rows.Add(dr);
}
dt.Rows.RemoveAt(0);
if (dt != null && dt.Rows.Count != 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
string categary = dt.Rows[i]["頁面"].ToString();
string fcategary = dt.Rows[i]["分類"].ToString();
string fTitle = dt.Rows[i]["標(biāo)題"].ToString();
string fUrl = dt.Rows[i]["鏈接"].ToString();
FooterDAL.Addfoot(categary, fcategary, fTitle, fUrl);
}
}
return dt;
}
#endregion
}
} public static partial class FooterDAL
{
/// <summary>
/// 添加
/// </summary>
/// <param name="id"></param>
/// <param name="catgary"></param>
/// <param name="fcatgary"></param>
/// <param name="fTitle"></param>
/// <param name="fUrl"></param>
/// <returns></returns>
public static int Addfoot(string categary, string fcategary, string fTitle, string fUrl)
{
string sql = string.Format("insert into Foot (categary,fcategary,fTitle,fUrl)values(@categary,@fcategary,@fTitle,@fUrl)");
SqlParameter[] parm =
{
new SqlParameter("@categary",categary)
,new SqlParameter("@fcategary",fcategary)
,new SqlParameter("@fTitle",fTitle)
,new SqlParameter("@fUrl",fUrl)
};
return new DBHelperSQL<Foot>(CommonTool.dbname).ExcuteSql(sql,parm);
}
}//FooterDAL將datatable,就是excel里面的數(shù)據(jù)添加到sql數(shù)據(jù)庫
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