使用NPOI导出Excel文件

使用NPOI导出Excel文件，本实例使用了ASP.NET MVC。

1、使用NPOI导出Excel文件

实例：导出商品列表。

要求：1、通过NPOI导出导出商品列表信息；

2、使用Excel函数计算商品总金额；

在Controllers控制器目录中创建ExportController.cs控制器

using System.IO;
using NPOI;
using NPOI.POIFS;
using NPOI.HSSF;
using NPOI.Util;
using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.HSSF.Util;

/// <summary>
/// 导出商品列表
/// </summary>
public FileResult ExportProduct()
{
//创建一个新的xls文件
HSSFWorkbook workbook = new HSSFWorkbook();

//创建DocumentSummaryInformation（选填）
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "深圳市电子商务有限公司";
dsi.Category = "报表";
//创建SummaryInformation（选填）
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Subject = "商品列表";
si.Title = "商品列表导出";
si.Author = "Kevin Pan";
//把创建好的对象赋给Workbook
workbook.DocumentSummaryInformation = dsi;
workbook.SummaryInformation = si;

//创建一个Sheet
ISheet sheet = workbook.CreateSheet("Sheet1");
sheet.DefaultRowHeight = 300;
//创建标题
IRow rowTitle = sheet.CreateRow(0);
rowTitle.Height = 500;
ICellStyle styleTitle = workbook.CreateCellStyle();
styleTitle.Alignment = HorizontalAlignment.Center;
styleTitle.VerticalAlignment = VerticalAlignment.Center;
IFont fontTitle = workbook.CreateFont();
fontTitle.FontName = "宋体";
fontTitle.FontHeightInPoints = 18;
styleTitle.SetFont(fontTitle);
ICell cellTitle = rowTitle.CreateCell(0);
cellTitle.SetCellValue("商品列表");
cellTitle.CellStyle = styleTitle;
sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, 5));  //合并单元格
//创建表格样式
IFont font = workbook.CreateFont();
font.FontName = "宋体";
font.FontHeightInPoints = 10;
ICellStyle style = workbook.CreateCellStyle(); ;
style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style.BottomBorderColor = HSSFColor.Black.Index;
style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style.LeftBorderColor = HSSFColor.Black.Index;
style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style.RightBorderColor = HSSFColor.Black.Index;
style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style.TopBorderColor = HSSFColor.Black.Index;
style.Alignment = HorizontalAlignment.Center;
style.SetFont(font);
//创建表头
IRow rowHead = sheet.CreateRow(1);
rowHead.CreateCell(0).SetCellValue("序号");
rowHead.GetCell(0).CellStyle = style;
sheet.SetColumnWidth(0, 256 * 5);

rowHead.CreateCell(1).SetCellValue("商品名称");
rowHead.GetCell(1).CellStyle = style;
sheet.SetColumnWidth(1, 256 * 25);

rowHead.CreateCell(2).SetCellValue("商品品牌");
rowHead.GetCell(2).CellStyle = style;
sheet.SetColumnWidth(2, 256 * 20);

rowHead.CreateCell(3).SetCellValue("商品价格");
rowHead.GetCell(3).CellStyle = style;
sheet.SetColumnWidth(3, 256 * 15);

rowHead.CreateCell(4).SetCellValue("数量");
rowHead.GetCell(4).CellStyle = style;
sheet.SetColumnWidth(3, 256 * 10);

rowHead.CreateCell(5).SetCellValue("总金额");
rowHead.GetCell(5).CellStyle = style;
sheet.SetColumnWidth(3, 256 * 15);

//获取商品列表数据
List<ProductModel> dataList = GetProductList();
//绑定表内容
int rowindex = 2;
int xh = 1;
foreach (var item in dataList)
{
IRow rowContent = sheet.CreateRow(rowindex);
rowContent.CreateCell(0).SetCellValue(xh);
rowContent.GetCell(0).CellStyle = style;

rowContent.CreateCell(1).SetCellValue(item.ProductName);
rowContent.GetCell(1).CellStyle = style;

rowContent.CreateCell(2).SetCellValue(item.ProductBrand);
rowContent.GetCell(2).CellStyle = style;

rowContent.CreateCell(3).SetCellValue(item.ProductPrice.ToString());
rowContent.GetCell(3).CellStyle = style;

rowContent.CreateCell(4).SetCellValue(item.Quantity.ToString());
rowContent.GetCell(4).CellStyle = style;
//设置函数，计算总金额
rowContent.CreateCell(5).SetCellFormula(String.Format("$D{0}*$E{0}", rowindex+1));
rowContent.GetCell(5).CellStyle = style;

rowindex++;
xh++;
}

//输出
System.IO.MemoryStream ms = new System.IO.MemoryStream();
workbook.Write(ms);
ms.Seek(0, SeekOrigin.Begin);
return File(ms, "application/vnd.ms-excel", "商品列表.xls");
}

2、基于.xls模板导出Excel文件

实例：基于.xls模板导出订单信息（如图 1）

要求：1、使用基于.xls模板导出订单信息；

2、使用Excel函数计算订单和商品的总金额；



图 1 基于.xls模板导出订单信息

[csharp] view
plain copy

/// <summary>

/// 导出订单信息

/// </summary>

public FileResult ExportOrder()

{

//获取订单信息

OrderModel order = GetOrderInfo();

//获取Excel模板

string fileName = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"/Template/order.xls";

FileStream file = new FileStream(fileName, FileMode.Open, FileAccess.Read);

//通过模板创建一个xls文件

HSSFWorkbook workbook = new HSSFWorkbook(file);

//获取Sheet

ISheet sheet = workbook.GetSheet("Sheet1");

//导出订单信息

sheet.GetRow(1).CreateCell(1).SetCellValue(order.OrderNo);

sheet.GetRow(1).CreateCell(3).SetCellValue(order.OrderTime.ToString("yyyy-MM-dd HH:mm:ss"));

sheet.GetRow(1).CreateCell(5).SetCellFormula("SUM(F6:F100)"); //设置函数，计算订单总金额

sheet.GetRow(2).CreateCell(1).SetCellValue(order.CustomName);

sheet.GetRow(2).CreateCell(3).SetCellValue(order.CustomAddress);

//导出产品列表

if (order.ProductList != null && order.ProductList.Count > 0)

{

//创建表头

IRow rowHead = sheet.CreateRow(4);

rowHead.CreateCell(0).SetCellValue("序号");

sheet.SetColumnWidth(0, 256 * 15);

rowHead.CreateCell(1).SetCellValue("商品名称");

sheet.SetColumnWidth(1, 256 * 25);

rowHead.CreateCell(2).SetCellValue("商品品牌");

sheet.SetColumnWidth(2, 256 * 20);

rowHead.CreateCell(3).SetCellValue("商品价格");

sheet.SetColumnWidth(3, 256 * 15);

rowHead.CreateCell(4).SetCellValue("数量");

sheet.SetColumnWidth(3, 256 * 10);

rowHead.CreateCell(5).SetCellValue("总金额");

sheet.SetColumnWidth(3, 256 * 15);

//绑定表内容

int rowindex = 5;

int xh = 1;

foreach (var item in order.ProductList)

{

IRow rowContent = sheet.CreateRow(rowindex);

rowContent.CreateCell(0).SetCellValue(xh);

rowContent.CreateCell(1).SetCellValue(item.ProductName);

rowContent.CreateCell(2).SetCellValue(item.ProductBrand);

rowContent.CreateCell(3).SetCellValue(item.ProductPrice.ToString());

rowContent.CreateCell(4).SetCellValue(item.Quantity.ToString());

rowContent.CreateCell(5).SetCellFormula(String.Format("$D{0}*$E{0}", rowindex + 1)); //设置函数，计算总金额

rowindex++;

xh++;

}

}

//输出

System.IO.MemoryStream ms = new System.IO.MemoryStream();

workbook.Write(ms);

ms.Seek(0, SeekOrigin.Begin);

return File(ms, "application/vnd.ms-excel", "订单信息.xls");

}

3、其他代码

3.1 实体类

在Models模型目录中创建ProductModel.cs和OrderModel.cs实体类

[csharp] view
plain copy

/// <summary>

/// 商品信息实体类

/// </summary>

public class ProductModel

{

/// <summary>

/// 商品名称

/// </summary>

public string ProductName { get; set; }

/// <summary>

/// 商品品牌

/// </summary>

public string ProductBrand { get; set; }

/// <summary>

/// 商品价格

/// </summary>

public decimal ProductPrice { get; set; }

/// <summary>

/// 数量

/// </summary>

public int Quantity { get; set; }

}

[csharp] view
plain copy

/// <summary>

/// 订单信息实体类

/// </summary>

public class OrderModel

{

/// <summary>

/// 订单编号

/// </summary>

public string OrderNo { get; set; }

/// <summary>

/// 下单时间

/// </summary>

public DateTime OrderTime { get; set; }

/// <summary>

/// 总金额

/// </summary>

public decimal Amount { get; set; }

/// <summary>

/// 客户名称

/// </summary>

public string CustomName { get; set; }

/// <summary>

/// 客户地址

/// </summary>

public string CustomAddress { get; set; }

/// <summary>

/// 商品列表

/// </summary>

public List<ProductModel> ProductList { get; set; }

}

3.2 获取商品和订单数据

[csharp] view
plain copy

/// <summary>

/// 获取商品列表

/// </summary>

public List<ProductModel> GetProductList()

{

List<ProductModel> productList = new List<ProductModel>();

ProductModel product1 = new ProductModel(){

ProductName = "苹果IPhone6手机",

ProductBrand = "苹果",

ProductPrice = 4999,

Quantity = 4

};

ProductModel product2 = new ProductModel()

{

ProductName = "三星智能手机",

ProductBrand = "三星",

ProductPrice = 3800,

Quantity = 3

};

ProductModel product3 = new ProductModel()

{

ProductName = "松下液晶电视机",

ProductBrand = "松下",

ProductPrice = 3800,

Quantity = 2

};

productList.Add(product1);

productList.Add(product2);

productList.Add(product3);

return productList;

}

/// <summary>

/// 获取订单信息

/// </summary>

public OrderModel GetOrderInfo()

{

OrderModel order = new OrderModel() {

OrderNo = "P20140929001",

OrderTime = DateTime.Now,

CustomName = "张三",

CustomAddress = "广东省深圳市罗湖区",

ProductList = GetProductList()

};

return order;

}

3.3 视图

在Views视图目录中创建Index.cshtml

[html] view
plain copy

<h2>使用NPOI生成Excel文件</h2>

<a href="@Url.Action("ExportProduct","Export")">导出商品</a>

<a href="@Url.Action("ExportOrder","Export")">导出订单</a>