.NET中MVC使用NPOI快速的导出excel表

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/SunshineBlog/article/details/81020422

效果图：

@*前台代码*@
@{
    ViewBag.Title = "Index";
}

<a href="~/home/toexcel">导出Excel表</a>

//后台代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System.IO;

namespace MvcApplication1.Controllers
{
    public class HomeController : Controller
    {
        //
        // GET: /Home/

        public ActionResult Index()
        {
            return View();
        }

        /// <summary>
        /// 表头的样式
        /// </summary>
        /// <param name="workbook"></param>
        /// <param name="sheet"></param>
        public void CreateHeadStyle(HSSFWorkbook workbook, HSSFSheet sheet)
        {
            //创建行
            HSSFRow row = sheet.CreateRow(0) as HSSFRow;
            //创建列
            var cell0 = row.CreateCell(0);
            var cell1 = row.CreateCell(1);
            var cell2 = row.CreateCell(2);
            cell0.SetCellValue("营业部");
            cell1.SetCellValue("当日预收");
            cell2.SetCellValue("昨日预收");
            //创建列的样式
            HSSFCellStyle cstyle = workbook.CreateCellStyle() as HSSFCellStyle;
            //设置垂直居中
            cstyle.VerticalAlignment = VerticalAlignment.CENTER;
            //设置水平居中
            cstyle.Alignment = HorizontalAlignment.CENTER;
            //合并单元格
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 2, 0, 0));
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 2, 1, 1));
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 2, 2, 2));

            cell0.CellStyle = cstyle;
            cell1.CellStyle = cstyle;
            cell2.CellStyle = cstyle;

            var cell3 = row.CreateCell(3);
            cell3.SetCellValue("8月关键经营指标");

            cstyle = workbook.CreateCellStyle() as HSSFCellStyle;
            cstyle.VerticalAlignment = VerticalAlignment.CENTER;
            cstyle.Alignment = HorizontalAlignment.CENTER;
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 3, 6));

            cell3.CellStyle = cstyle;

            //---------------------创建行------------------------
            HSSFRow row1 = sheet.CreateRow(1) as HSSFRow;
            var cell4 = row1.CreateCell(3);
            var cell5 = row1.CreateCell(4);
            cell4.SetCellValue("在职人数");
            cell5.SetCellValue("新增人数");

            cstyle = workbook.CreateCellStyle() as HSSFCellStyle;
            cstyle.VerticalAlignment = VerticalAlignment.CENTER;
            cstyle.Alignment = HorizontalAlignment.CENTER;
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(1, 2, 3, 3));
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(1, 2, 4, 4));

            cell4.CellStyle = cstyle;
            cell5.CellStyle = cstyle;

            var cell6 = row1.CreateCell(5);
            cell6.SetCellValue("以实际销售为准");

            cstyle = workbook.CreateCellStyle() as HSSFCellStyle;
            cstyle.VerticalAlignment = VerticalAlignment.CENTER;
            cstyle.Alignment = HorizontalAlignment.CENTER;
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(1, 1, 5, 6));

            cell6.CellStyle = cstyle;
            //---------------------创建行------------------------
            HSSFRow row2 = sheet.CreateRow(2) as HSSFRow;

            var cell7 = row2.CreateCell(5);
            var cell8 = row2.CreateCell(6);
            cell7.SetCellValue("出单人力");
            cell8.SetCellValue("出单率");

            cstyle = workbook.CreateCellStyle() as HSSFCellStyle;
            cstyle.VerticalAlignment = VerticalAlignment.CENTER;
            cstyle.Alignment = HorizontalAlignment.CENTER;
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(2, 2, 5, 5));
            sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(2, 2, 6, 6));

            cell7.CellStyle = cstyle;
            cell8.CellStyle = cstyle;
        }

        /// <summary>
        /// 导出excel表
        /// </summary>
        public void ToExcel()
        {
            //创建一个Excel表
            HSSFWorkbook workbook = new HSSFWorkbook();

            HSSFSheet sheet = workbook.CreateSheet("2017年8月经营指标") as HSSFSheet;

            CreateHeadStyle(workbook, sheet);

            Response.AddHeader("Content-Disposition", "attachment;filename=2017年8月经营指标报表.xls");

            EntityDBEntities1 en = new EntityDBEntities1();
            //查询数据库
            List<employ> elist = en.employ.ToList();
            //遍历集合
            for (int i = 0; i < elist.Count; i++)
            {
                //创建行
                HSSFRow row = sheet.CreateRow(i+3) as HSSFRow;
                //创建列
                row.CreateCell(0).SetCellValue(elist[i].department);
                row.CreateCell(1).SetCellValue(elist[i].todaynum.ToString());
                row.CreateCell(2).SetCellValue(elist[i].yestoday.ToString());
                row.CreateCell(3).SetCellValue(elist[i].peoplenum.ToString());
                row.CreateCell(4).SetCellValue(elist[i].addpeoplenum.ToString());
                row.CreateCell(5).SetCellValue(elist[i].people.ToString());
                row.CreateCell(6).SetCellValue(elist[i].frank.ToString());

            }

            //内存流
            MemoryStream ms = new MemoryStream();

            workbook.Write(ms);

            Response.BinaryWrite(ms.ToArray());
        }

    }
}