前端列表展示数据，显示图片：
private void GetList() { int currPage = Utils.ReqIntParams("page", 1); int pageSize = Utils.ReqIntParams("rows", 30); int totalCount = 0; int totalPage = 0; string beginTime = Utils.ReqStrParams("bt", ""); string endTime = Utils.ReqStrParams("et", ""); string keyword = Utils.ReqStrParams("keyword", "-1"); int provider = Utils.ReqIntParams("provider", -1); int totalSalesNum = 0; decimal totalSalesMoney = 0; DataTable dt = OrderDB.GetList(keyword, provider, beginTime, endTime,1, currPage, pageSize, ref totalCount, ref totalPage,ref totalSalesNum, ref totalSalesMoney); DataTable newDT = new DataTable(); newDT.Columns.Add("rowno"); newDT.Columns.Add("PNo"); newDT.Columns.Add("PName"); newDT.Columns.Add("BarCode"); newDT.Columns.Add("Proceeds"); newDT.Columns.Add("Refund"); newDT.Columns.Add("totalSalesNum"); newDT.Columns.Add("totalSalesMoney"); for (int i = 0; i < dt.Rows.Count; i++) { DataRow dr = newDT.NewRow(); dr["rowno"] = dt.Rows[i]["rowno"]; dr["PNo"] = dt.Rows[i]["PNo"]; dr["PName"] = dt.Rows[i]["PName"]; dr["BarCode"] = dt.Rows[i]["BarCode"].ToString() != "" ? GenerateBarCodeBySpire(dt.Rows[i]["BarCode"].ToString()) : ""; dr["Proceeds"] = dt.Rows[i]["Proceeds"]; dr["Refund"] = dt.Rows[i]["Refund"]; dr["totalSalesNum"] = dt.Rows[i]["totalSalesNum"]; dr["totalSalesMoney"] = dt.Rows[i]["totalSalesMoney"]; newDT.Rows.Add(dr); } System.Text.StringBuilder sb = new System.Text.StringBuilder(); sb.Append("{"); sb.Append("\"total\":"); sb.Append("\"" + totalCount + "\","); sb.Append("\"totalSalesNum\":"); sb.Append("\"" + totalSalesNum + "\","); sb.Append("\"totalSalesMoney\":"); sb.Append("\"" + totalSalesMoney + "\","); newDT.TableName = "rows"; string strjson = XpShopJson.DtToJSON(newDT); if (strjson.Trim() != "") { strjson = strjson.Remove(0, 1); strjson = strjson.Remove(strjson.Length - 1, 1); } sb.Append(strjson); sb.Append("}"); Response.Write(sb.ToString()); } /// <summary> /// 将条形编码转成Base64的图片路径 /// </summary> /// <param name="codestr"></param> /// <returns></returns> private string GenerateBarCodeBySpire(string codestr) { BarcodeLib.Barcode.Linear barcode = new BarcodeLib.Barcode.Linear(); barcode.Type = BarcodeType.CODE39; barcode.Data = codestr; barcode.UOM = UnitOfMeasure.PIXEL; barcode.BarWidth = 1; barcode.BarHeight = 80; barcode.LeftMargin = 5; barcode.RightMargin = 5; barcode.TopMargin = 5; barcode.BottomMargin = 5; barcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png; //Bitmap barcodeInBitmap = barcode.drawBarcode(); MemoryStream ms = new MemoryStream(); barcode.drawBarcode(ms); byte[] arr = new byte[ms.Length]; ms.Position = 0; ms.Read(arr, 0, (int)ms.Length); ms.Close(); string pic = Convert.ToBase64String(arr); return pic; }
导出excel
1 private void ExportAll() { 2 int currPage = Utils.ReqIntParams("page", 1); 3 int pageSize = Utils.ReqIntParams("rows", 9999); 4 int totalCount = 0; 5 int totalPage = 0; 6 string beginTime = Utils.ReqStrParams("bt", ""); 7 string endTime = Utils.ReqStrParams("et", ""); 8 string keyword = Utils.ReqStrParams("keyword", "-1"); 9 int provider = Utils.ReqIntParams("provider", -1); 10 int totalSalesNum = 0; 11 decimal totalSalesMoney = 0; 12 DataTable dt = OrderDB.GetSalesStatistics(keyword, provider, beginTime, endTime, 2,currPage, pageSize, ref totalCount, ref totalPage, ref totalSalesNum, ref totalSalesMoney); 13 string fileName = "销售统计数据-" + DateTime.Now.ToString("yyyyMMddHHmmss"); 14 if (dt.Rows.Count > 0) 15 { 16 CreateXls(dt, totalSalesNum,totalSalesMoney,fileName); 17 } 18 else { 19 Utils.ShowMsg2(this, "没有可导出的数据！"); 20 } 21 } 22 23 public void CreateXls(DataTable dt,int totalSalesNum,decimal totalSalesMoney, string FileName) 24 { 25 string sheetName = "销售统计数据"; 26 //生成的表格的表头的主体 27 List<string> liHeadSubject = new List<string>(); 28 liHeadSubject.Add("序号"); 29 liHeadSubject.Add("商品编号"); 30 liHeadSubject.Add("商品名称"); 31 liHeadSubject.Add("商品条码"); 32 liHeadSubject.Add("销售数量"); 33 liHeadSubject.Add("收款金额"); 34 liHeadSubject.Add("退款金额"); 35 liHeadSubject.Add("销售金额"); 36 CreateXlsBT(dt,totalSalesNum, totalSalesMoney, sheetName, liHeadSubject, Context, FileName); 37 } 38 39 /// <summary> 40 /// 根据datatable数据内容，生成电子表格,这个是没有明细的 41 /// </summary> 42 /// <param name="dtContent">要导出的内容</param> 43 /// <param name="sheetName"> 工作簿的名称</param> 44 /// <param name="liHeadSubject">生成的表格的表头的主体，例如这个订单的主要数据，订单总价 收货人，收货地，手机，总购买数等</param> 45 /// <param name="context"></param> 46 /// <param name="fileName">生成的文件名</param> 47 public void CreateXlsBT(DataTable dtContent, int totalSalesNum, decimal totalSalesMoney, string sheetName, List<string> liHeadSubject, HttpContext context, string fileName) 48 { 49 //每个工作簿显示的数据行数//Excel2003版最大行数是65535行 50 int sheetSize = 65535; 51 //工作簿个数 52 double sheetCount = Math.Ceiling(dtContent.Rows.Count * 1.00 / sheetSize); 53 54 XSSFWorkbook book = new XSSFWorkbook(); 55 //创建工作簿 56 ISheet se = book.CreateSheet(sheetName); 57 //设置单元格高度 58 // se.DefaultRowHeight = 35 * 38; //18 * 20; 59 //创建行 60 IRow row1 = se.CreateRow(0); 61 62 ; 63 ICell i0 = row1.CreateCell(0, CellType.String); 64 i0.SetCellValue(""); 65 ICell i01 = row1.CreateCell(1, CellType.String); 66 i01.SetCellValue(""); 67 ICell i02 = row1.CreateCell(2, CellType.String); 68 i02.SetCellValue(""); 69 ICell i03 = row1.CreateCell(3, CellType.String); 70 i03.SetCellValue(""); 71 ICell i04 = row1.CreateCell(4, CellType.String); 72 i04.SetCellValue("销售总数量：" + totalSalesNum); 73 ICell i05 = row1.CreateCell(5, CellType.String); 74 i05.SetCellValue(""); 75 ICell i1 = row1.CreateCell(6, CellType.String); 76 i1.SetCellValue(""); 77 ICell i2 = row1.CreateCell(7, CellType.String); 78 i2.SetCellValue("销售总金额:"+totalSalesMoney.ToString()); 79 80 //4.创建CellStyle与DataFormat并加载格式样式 81 IDataFormat dataformat = book.CreateDataFormat(); 82 ICellStyle style1 = book.CreateCellStyle(); 83 style1.DataFormat = dataformat.GetFormat("0.00"); 84 //创建行 85 IRow row = se.CreateRow(1); 86 87 //合并表头列 88 List<string> liHead = new List<string>(liHeadSubject); 89 int count = liHead.Count; 90 for (int i = 0; i < count; i++)//创建表头 91 { 92 //创建单元格 93 ICell ic = row.CreateCell(i, CellType.String); 94 ic.SetCellValue(liHead[i].Trim()); 95 } 96 IRow onerow = se.GetRow(0); 97 se.GetRow(1).Height= 22 * 24; 98 onerow.Height = 22 * 24; 99 int fillEmptyToColumnNum = liHeadSubject.Count; 100 for (int i = 0; i < dtContent.Rows.Count; i++)//创建内容 101 { 102 row = se.CreateRow(i + 2); 103 row.Height = 35 * 38; 104 int columnsCount = dtContent.Columns.Count; 105 for (int j = 0; j < columnsCount; j++) 106 { 107 ICell ic = row.CreateCell(j, CellType.String); 108 109 110 if (j == 3) 111 {//"data:image/png;base64," + dtContent.Rows[i][j].ToString().Trim() 112 if (dtContent.Rows[i][j].ToString().Trim() != "") 113 { 114 //像excel插入图像 115 AddCellPicture(se, book, GenerateBarCodeBySpireBitmap(dtContent.Rows[i][j].ToString()), i - 2, j); 116 } 117 118 } 119 else if (j == 4) 120 { 121 ic.SetCellValue((int)dtContent.Rows[i][j]); 122 123 } else if (j==7||j==6|| j == 5) { 124 //ic.CellStyle = style1; 125 ic.SetCellValue(double.Parse(dtContent.Rows[i][j].ToString().Trim())); 126 } 127 else { 128 ic.SetCellValue(dtContent.Rows[i][j].ToString().Trim()); 129 130 } 131 } 132 } 133 se.SetColumnWidth(4, 20 * 256); 134 se.SetColumnWidth(5, 20 * 256); 135 se.SetColumnWidth(6, 20 * 256); 136 se.SetColumnWidth(7, 20 * 256); 137 //宽度自适应 138 for (int columnNum = 0; columnNum < count; columnNum++) 139 { 140 int columnWidth = se.GetColumnWidth(columnNum) / 256;//获取当前列宽度 141 for (int rowNum = 1; rowNum <= se.LastRowNum; rowNum++)//在这一列上循环行 142 { 143 IRow currentRow = se.GetRow(rowNum); 144 ICell currentCell = currentRow.GetCell(columnNum); 145 //int length = Encoding.UTF8.GetBytes(currentCell.ToString().Trim()).Length;//获取当前单元格的内容宽度 146 int length = currentCell.ToString().Length;//获取当前单元格的内容宽度 147 if (columnWidth < length + 1) 148 { 149 columnWidth = length + 1; 150 }//若当前单元格内容宽度大于列宽，则调整列宽为当前单元格宽度，后面的+1是我人为的将宽度增加一个字符 151 152 } 153 if (columnNum==3) 154 { 155 se.SetColumnWidth(columnNum, 16 * 840); 156 } 157 else { 158 se.SetColumnWidth(columnNum, columnWidth * 256); 159 } 160 } 161 162 163 context.Response.AppendHeader("Content-Disposition", "Attachment; FileName=" + fileName + ".xls;"); 164 context.Response.ContentType = "application/vnd.ms-excel"; 165 context.Response.ContentEncoding = System.Text.Encoding.UTF8; 166 book.Write(context.Response.OutputStream); 167 book.Close(); 168 book = null; 169 } 170 171 172 /// <summary> 173 /// 将编码转成图形流 174 /// </summary> 175 /// <param name="codestr"></param> 176 /// <returns></returns> 177 private Bitmap GenerateBarCodeBySpireBitmap(string codestr) 178 { 179 180 BarcodeLib.Barcode.Linear barcode = new BarcodeLib.Barcode.Linear(); 181 182 barcode.Type = BarcodeType.CODE39; 183 184 barcode.Data = codestr; 185 186 barcode.UOM = UnitOfMeasure.PIXEL; 187 barcode.BarWidth = 1; 188 barcode.BarHeight = 80; 189 barcode.LeftMargin = 5; 190 barcode.RightMargin = 5; 191 barcode.TopMargin = 5; 192 barcode.BottomMargin = 5; 193 194 barcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png; 195 Bitmap barcodeInBitmap = barcode.drawBarcode(); 196 return barcodeInBitmap; 197 } 198 199 200 /// <summary> 201 /// 向sheet插入图片 202 /// </summary> 203 private static void AddCellPicture(ISheet sheet, XSSFWorkbook workbook, Bitmap b, int row, int col) 204 { 205 206 Bitmap bitmap = b; //读取图片流 207 Bitmap OldImage = new Bitmap(bitmap);//将图片流复制到新的图片流中 208 bitmap.Dispose(); //将原来的图片流释放，将图片文件进行解锁。 209 210 using (MemoryStream ms = new MemoryStream()) 211 { 212 OldImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); 213 byte[] bytes = ms.ToArray(); 214 215 int pictureIdx = workbook.AddPicture(bytes, NPOI.SS.UserModel.PictureType.JPEG); //添加图片 216 XSSFDrawing patriarch = (XSSFDrawing)sheet.CreateDrawingPatriarch(); 217 // XSSFClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, col, row + 2, col + 1, row + 3); 218 XSSFClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, col, row+4 , col + 1, row + 5); 219 //图片位置，图片左上角为（col, row） 220 XSSFPicture pict = (XSSFPicture)patriarch.CreatePicture(anchor, pictureIdx); 221 //pict.Resize(); //用图片原始大小来显示 222 /* 223 int widthPx = 300; 224 int heightPx = 120; 225 //设置列宽度，根据公式：POI中的列宽 ≈ 像素/8*256 226 decimal width = Math.Round((decimal)(heightPx) / 8, 2); 227 //将图片缩小为原来的十分之九 228 decimal lessWidth = Math.Round(width * 9 / 10, 2); 229 sheet.SetColumnWidth(col, Decimal.ToInt32(lessWidth * 256)); 230 IRow row3 = sheet.GetRow(row); 231 //设置行高度，根据公式：POI中的行高 = 像素/DPI*72*20 232 decimal poiHeight = Math.Round((decimal)(widthPx) / 7, 2); 233 //将图片缩小为原来的十分之九 234 decimal lessPoiHeight = Math.Round(poiHeight * 9 / 10, 2); 235 row3.Height = (short)Decimal.ToInt32(lessPoiHeight * 72 * 20); 236 */ 237 } 238 239 }