問(wèn)題描述

要建立一個(gè)三列的excel表格，最后一列是個(gè)二維碼，使用NPOI寫(xiě)完之后，導(dǎo)出的死活打不開(kāi)，不知道代碼哪里錯(cuò)了，麻煩各位幫忙看看代碼哪里錯(cuò)了，不甚感激。

public static void CreateImageExcel(List<string> links){ //創(chuàng)建工作薄 HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet("Sheet1"); //填充列標(biāo)題以及樣式 int rowsNum = 0; //行號(hào) HSSFRow headerRow = (HSSFRow)sheet.CreateRow(rowsNum); string strQrCodePath = ""; headerRow.CreateCell(0, CellType.String).SetCellValue("編號(hào)"); headerRow.CreateCell(1, CellType.String).SetCellValue("鏈接"); headerRow.CreateCell(2, CellType.String).SetCellValue("二維碼"); HSSFRow row = null; rowsNum = 1; //行號(hào)，從第2行開(kāi)始 foreach (var link in Links) {//寫(xiě)入字段值 row = (HSSFRow)sheet.CreateRow(rowsNum);row.CreateCell(0, CellType.String).SetCellValue(rowsNum);row.CreateCell(1, CellType.String).SetCellValue(Link);row.CreateCell(2, CellType.Blank).SetCellValue("");strQrCodePath = CommonHelper.CreateQRCode(Configer.GetAppSetting<string>("siteUrl") + "/p/" + item.Link, 8, 4);byte[] bytes = System.IO.File.ReadAllBytes(strQrCodePath);int pictureIdx = workbook.AddPicture(bytes, PictureType.PNG);HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();HSSFClientAnchor anchor = new HSSFClientAnchor(0, 10, 1023, 0, 2, rowsNum, 2, rowsNum);HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);pict.Resize();rowsNum++;//刪除二維碼if (System.IO.File.Exists(strQrCodePath)){ System.IO.File.Delete(strQrCodePath);} } using (MemoryStream ms = new MemoryStream()) {workbook.Write(ms);ms.Flush();ms.Position = 0;// 設(shè)置編碼和附件格式 string fileName = model.Channel.Name + "_" + DateTime.Now.ToString("yyyy-MM-dd-HHmmss") + ".xlsx";//客戶端保存的文件名System.Web.HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";System.Web.HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;System.Web.HttpContext.Current.Response.Charset = "";System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8));System.Web.HttpContext.Current.Response.BinaryWrite(ms.GetBuffer());ms.Close();ms.Dispose();System.Web.HttpContext.Current.Response.End(); }}

問(wèn)題解答

//創(chuàng)建工作薄 HSSFWorkbook workbook = new HSSFWorkbook(); 應(yīng)該是這句代碼的問(wèn)題HSSFWorkbook創(chuàng)建的工作簿只支持2003格式的，即xls要想導(dǎo)出xlsx的格式，應(yīng)該用XSSFWorkbook對(duì)象，例如IWorkbook workbook = new XSSFWorkbook();我今天在做導(dǎo)入也遇到這個(gè)問(wèn)題，通過(guò)上面的方式解決的

改完了，只能導(dǎo)出.xls文件，不知道是不是其中有圖片的原因，導(dǎo)出的.xlsx文件無(wú)法查看。