MVC+NPOI导入导出

　　<div>

　　<form action="/Emp/Excel" method="post" enctype="multipart/form-data">
            选择文件:<input id="exceFile" name="excelFile" type="file" />
            <input type="submit" value="导入客户信息..." id="Submit"/>
        </form>
        <form action="/Emp/DownLoad" method="post" enctype="multipart/form-data">
            <input type="submit" value="导出客户信息..." />
        </form>

　　</div>

　　

    using NPOI.HSSF.UserModel;
    using NPOI.SS.UserModel;
    using NPOI.XSSF.UserModel;
    using NPOI.XWPF.UserModel;
    using System.IO;

        /// <summary>
        /// 导入
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        public ActionResult Excel()
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                var exceFile = Request.Files[i];
                if (exceFile != null && !string.IsNullOrEmpty(exceFile.FileName))
                {
                    IWorkbook wk = null;
                    var subName = exceFile.FileName.Substring(exceFile.FileName.LastIndexOf('.'), exceFile.FileName.Length - exceFile.FileName.LastIndexOf('.'));
                    if (subName.Equals(".xls"))
                    {
                        wk = new HSSFWorkbook(exceFile.InputStream);
                    }
                    else if(subName.Equals(".xlsx"))
                    {
                        wk = new XSSFWorkbook(exceFile.InputStream);
                    }
                    else
                    {
                        return View("Index");
                    }

                    ISheet sheet = wk.GetSheetAt(0);

                    IRow row = sheet.GetRow(1);
                    for (int k = 0; k <= sheet.LastRowNum; k++)
                    {
                        row = sheet.GetRow(k);
                        string strSql = "insert into Emp(Ename,Ephone,Eaddress,Ezhiwu,Emoney,Egongsi) values(";
                        if (row != null)
                        {
                            for (int j = 0; j < row.LastCellNum; j++)
                            {
                                if (j == 0)
                                {
                                    continue;
                                }
                                string value = row.GetCell(j).ToString();
                                strSql += "'" + value + "',";
                            }
                            strSql = strSql.Substring(0, strSql.Length - 1) + ")";
                            ExcelDBHelper.ExecuteNonQuery(strSql);
                        }
                    }
                }
            }
            return View("Add");
        }

        /// <summary>
        /// 导出
        /// </summary>
        /// <returns></returns>
        public ActionResult DownLoad()
        {
            NPOI.HSSF.UserModel.HSSFWorkbook HSSFWorkbook = new HSSFWorkbook();

            ISheet sheet = HSSFWorkbook.CreateSheet("32562");

            IRow cells = sheet.CreateRow(0);

            cells.CreateCell(0).SetCellValue("编号");
            cells.CreateCell(1).SetCellValue("职员名称");
            cells.CreateCell(2).SetCellValue("电话");
            cells.CreateCell(3).SetCellValue("地址");
            cells.CreateCell(4).SetCellValue("职务");
            cells.CreateCell(5).SetCellValue("费用");
            cells.CreateCell(6).SetCellValue("公司名称");

            List<Emps> list = ShowExcel();    //需要绑定数据源

            for (int i = 0; i < list.Count; i++)
            {
                NPOI.SS.UserModel.IRow rowtemp = sheet.CreateRow(i + 1);
                rowtemp.CreateCell(0).SetCellValue(list[i].EmpId.ToString());
                rowtemp.CreateCell(1).SetCellValue(list[i].Ename.ToString());
                rowtemp.CreateCell(2).SetCellValue(list[i].Ephone.ToString());
                rowtemp.CreateCell(3).SetCellValue(list[i].Eaddress.ToString());
                rowtemp.CreateCell(4).SetCellValue(list[i].Ezhiwu.ToString());
                rowtemp.CreateCell(5).SetCellValue(list[i].Emoney.ToString());
                rowtemp.CreateCell(6).SetCellValue(list[i].Egongsi.ToString());
            }

            MemoryStream memoryStream = new MemoryStream();
            HSSFWorkbook.Write(memoryStream);
            memoryStream.Seek(0,SeekOrigin.Begin);
            return File(memoryStream,"application/vnd.ms-excel","22356.xls");
        }

 

　　//导出时获取的数据源
        public List<Emps> ShowExcel()
        {
            string str = string.Format("select * from Emp");
            return DBHelper.GetList<Emps>(str);
        }