C# 生成多张excel 并打包

自述：在工作中遇到很多有趣的需求，在实施过程中看到了自己的很多不足。 
仅在这里记录收获，积累成就感，愉悦自己，感谢他人！

// <summary>
/// 将数据部分处理生成excel 并打包成zip
/// </summary>
/// <param name="datas">数据列表</param>
public static void CreatZip(List<AmmeterProportionLogBll.AmmeterProportionLog_Aduit_Export> datas)
{
HttpContext curContext = HttpContext.Current;
curContext.Response.ContentType = "application/zip";
curContext.Response.ContentEncoding = Encoding.UTF8;
curContext.Response.Charset = "";
curContext.Response.AppendHeader("Content-Disposition",
"attachment;filename=" + HttpUtility.UrlEncode(DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip", Encoding.UTF8));
//处理数据生成excel表 以K_V形式保存 Workbooks
Dictionary<string, HSSFWorkbook> Workbooks = new Dictionary<string, HSSFWorkbook>();
datas.ForEach(p => Workbooks.Add(p.txtAmmeterNum, Export0(p)));
//遍历Workbooks 生成zip文件
curContext.Response.BinaryWrite(PackageManyZip(Workbooks).GetBuffer());
curContext.Response.End();
curContext.Response.Close();
}

//生成excel表  截取表的部分显示

public static HSSFWorkbook Export2(AmmeterProportionLogBll.AmmeterProportionLog_Aduit_Export m) 
{ 
HSSFWorkbook workbook = new HSSFWorkbook(); 
ISheet sheet = workbook.CreateSheet(“Sheet1”);

//设置6列  表中涉及多张图片处理
sheet.SetColumnWidth(0, 20 * 256 + 200);
sheet.SetColumnWidth(1, 20 * 256 + 200);
sheet.SetColumnWidth(2, 20 * 256 + 200);
sheet.SetColumnWidth(3, 20 * 256 + 200);
sheet.SetColumnWidth(4, 20 * 256 + 200);
sheet.SetColumnWidth(5, 20 * 256 + 200);

ICellStyle dateStyle = workbook.CreateCellStyle();
IDataFormat format = workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
int rowIndex = 0;//行标记

#region 表头及样式
{
IRow headerRow = sheet.CreateRow(rowIndex);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue("Excel大标题");

ICellStyle headStyle = workbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.Center;
headStyle.VerticalAlignment = VerticalAlignment.Center;

IFont font = workbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
//合并单元格
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(rowIndex, rowIndex, 0, 5));
rowIndex++;
}
#endregion

#region 两种样式
ICellStyle CellStyle = workbook.CreateCellStyle();
CellStyle.Alignment = HorizontalAlignment.Left;
CellStyle.VerticalAlignment = VerticalAlignment.Center;
//字体
IFont CellFont = workbook.CreateFont();
CellFont.FontHeightInPoints = 10;
CellFont.Boldweight = 700;
CellStyle.SetFont(CellFont);
ICellStyle rightheadStyle = workbook.CreateCellStyle();
rightheadStyle.Alignment = HorizontalAlignment.Right;
rightheadStyle.VerticalAlignment = VerticalAlignment.Center;
//文本样式 2
IFont rightfont = workbook.CreateFont();
rightfont.FontHeightInPoints = 10;
rightfont.Boldweight = 700;
rightheadStyle.SetFont(rightfont);
#endregion

#region 区域、核查日期
{
rowIndex++;
IRow headerRow = sheet.CreateRow(rowIndex);
headerRow.HeightInPoints = 20;
headerRow.CreateCell(0).SetCellValue("区域：" + m.hfAreaName);
headerRow.GetCell(0).CellStyle = CellStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(rowIndex, rowIndex, 0, 1));

headerRow.CreateCell(2).SetCellValue("核查日期：" + m.txtCurrentDateInfo.ToString());
headerRow.GetCell(2).CellStyle = CellStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(rowIndex, rowIndex, 2, 5));

rowIndex++;
}
#endregion

#region 分别呈现A单位 B单位 C单位的图片X张(0<=X<=12) 每个单位占2列
{
int R_CMCCP = DealPhoto(sheet, workbook, m.tdPhoto_CMCCP, rowIndex, 0, 12);
int R_CTCCP = DealPhoto(sheet, workbook, m.tdPhoto_CTCCP, rowIndex, 2, 12);
int R_CUCCP = DealPhoto(sheet, workbook, m.tdPhoto_CUCCP, rowIndex, 4, 12);
rowIndex = Math.Max(Math.Max(R_CMCCP, R_CTCCP), R_CUCCP);
}
#endregion

return
d24f
workbook;
}

/// <summary>
/// 分别对多张图片进行列表呈现
/// </summary>
/// <param name="Path">图片路径</param>
/// <param name="StartCol">起始列</param>
/// <param name="MaxNum">限制显示图片张数/param>
private static int DealPhoto(ISheet sheet, HSSFWorkbook workbook, string Path, int rowIndex, int StartCol, int MaxNum)
{
int RowNum = rowIndex - 1;
if (Path != "")
{
string[] paths = Path.Split(';');
int i = 0;
for (i = 0; i < paths.Length && i < MaxNum; i++)
{
if (i % 2 == 0)
{
IRow headerRow = sheet.CreateRow(rowIndex + i / 2);
headerRow.HeightInPoints = 80;
RowNum++;
}
AddPieChartMerage(sheet, workbook, paths[i], RowNum, StartCol + i % 2, 0);
}
}
else
{
IRow headerRow = sheet.CreateRow(rowIndex);
headerRow.HeightInPoints = 80;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(rowIndex, rowIndex, StartCol, StartCol + 1));
RowNum++;
}
return ++RowNum;
}

//图片处理
private static void AddPieChartMerage(ISheet sheet, HSSFWorkbook workbook, string totalFileURL, int row, int col, int MerageColCount)
{
try
{
HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();
//照片位置，（col, row）第row+1行col+1列，右下角为（ col +1, row +1）第 col +1+1行row +1+1列，宽为100，高为50
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 100, 50, col, row, col + 1, row + 1);
int i = 0;
foreach (var fileurl in totalFileURL.Split(';'))
{
string path = fileurl;//图片路径
byte[] bytes = System.IO.File.ReadAllBytes(path);
if (!string.IsNullOrEmpty(path))
{
int pictureIdx = workbook.AddPicture(bytes, NPOI.SS.UserModel.PictureType.JPEG);
anchor = new HSSFClientAnchor(i * 100, 0, i * 100 + 100, 0, col, row, col + 1 + MerageColCount, row + 1);
HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
//pict.Resize();用图片原始大小来显示
}
i++;
}
}
catch (Exception)
{
//throw ex;
}
}

//生成zip文件

public static MemoryStream PackageManyZip(Dictionary<string, HSSFWorkbook> Workbooks)
{
byte[] buffer;
MemoryStream returnStream = new MemoryStream();
var zipMs = new MemoryStream();
using (ZipOutputStream zipStream = new ZipOutputStream(zipMs))
{
zipStream.SetLevel(7);//压缩程度
foreach (var kv in Workbooks)
{
string fileName = kv.Key;//文件名为AmmeterNum
using (MemoryStream ms = new MemoryStream())
{
kv.Value.Write(ms);
ms.Position = 0;
var streamInput = ms;
buffer = new byte[streamInput.Length];
zipStream.PutNextEntry(new ZipEntry(fileName));
while (true)
{
var readCount = streamInput.Read(buffer, 0, buffer.Length);
if (readCount > 0)
{
zipStream.Write(buffer, 0, readCount);
}
else
{
break;
}
}
ms.Flush();
}
zipStream.Flush();
}
zipStream.Finish();
zipMs.Position = 0;
zipMs.CopyTo(returnStream, 5600);
}
returnStream.Position = 0;
return returnStream;
}

效果如下：

注：excel 和压缩的处理稍显粗糙。期待改进！一路积累，一路成长！欢迎见证！