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 WorkbooksDictionary<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 2IFont 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);}#endregionreturn 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50HSSFClientAnchor 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AmmeterNumusing (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！