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NOPI导出多个sheet,一列图片
NPOI API: http://www.cnblogs.com/atao/archive/2009/11/15/1603528.html
http://blog.csdn.net/pan_junbiao/article/details/39717443 -- NPOI使用手册
http://www.cnblogs.com/wei325/p/4748324.html
每一张表只能有一个HSSFPatriarch对象，如果把它的创建放到了setPic方法中，那么一行只会出现一张图片，最后的图片会消掉之前的图片。也不能放到for循环里
HSSFClientAnchor(dx1,dy1,dx2,dy2,col1,row1,col2,row2)的参数，有必要在这里说明一下：
dx1：起始单元格的x偏移量，如例子中的255表示直线起始位置距A1单元格左侧的距离；
dy1：起始单元格的y偏移量，如例子中的125表示直线起始位置距A1单元格上侧的距离；
dx2：终止单元格的x偏移量，如例子中的1023表示直线起始位置距C3单元格左侧的距离；
dy2：终止单元格的y偏移量，如例子中的150表示直线起始位置距C3单元格上侧的距离；
col1：起始单元格列序号，从0开始计算；
row1：起始单元格行序号，从0开始计算，如例子中col1=0,row1=0就表示起始单元格为A1；
col2：终止单元格列序号，从0开始计算；
row2：终止单元格行序号，从0开始计算，如例子中col2=2,row2=2就表示起始单元格为C3；
//添加多个图片时:多个pic应该share同一个DrawingPatriarch在同一个sheet里面。
//获取枚举类型的Display特性的name值 public string GetEnumTxt(Enum eEnum) { var enumType = eEnum.GetType(); var field = enumType.GetField(eEnum.ToString()); var display = field.GetCustomAttributes(typeof(DisplayAttribute), false).FirstOrDefault() as DisplayAttribute; return display != null ? display.Name : eEnum.ToString(); } private void setPic(HSSFWorkbook workbook, HSSFPatriarch patriarch,string path, ISheet sheet, int rowline, int col) { if(string.IsNullOrEmpty(path))return; byte[] bytes = System.IO.File.ReadAllBytes(Server.MapPath(path)); int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG); // 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释 HSSFClientAnchor anchor = new HSSFClientAnchor(70, 10, 0, 0, col, rowline, col+1, rowline + 1); //把图片插到相应的位置 HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx); }
private void setPic(HSSFWorkbook workbook, HSSFPatriarch patriarch,string path, ISheet sheet, int rowline, int col) { if(string.IsNullOrEmpty(path))return; byte[] bytes = System.IO.File.ReadAllBytes(Server.MapPath(path)); int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG); // 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) 后面再作解释 HSSFClientAnchor anchor = new HSSFClientAnchor(70, 10, 0, 0, col, rowline, col+1, rowline + 1); //把图片插到相应的位置 HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx); }
导出多个sheet,一列图片
/// <summary> /// 导出EXCEL,可以导出多个sheet(图片) /// </summary> /// <param name="dtSources">sheet数据源</param> /// <param name="lstColname">sheet列名数据</param> /// <param name="sheetname">sheet名</param> /// <param name="filename">文件名</param> /// <param name="mColImage">图像列</param> /// <returns></returns> public static string ExporMultiSheetImage(List<DataTable> dtSources, List<List<string>> lstColname, List<string> sheetname, string filename,int mColImage) { //创建工作薄 IWorkbook workbook = new HSSFWorkbook(); string FileName = filename + ".xls"; for (int k = 0; k < dtSources.Count; k++) { //DataTable dt = dtSources[k]; int iSheetCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(dtSources[k].Rows.Count) / 10000)); iSheetCount = iSheetCount == 0 ? 1 : iSheetCount; for (int iSheetIndex = 0; iSheetIndex < iSheetCount; iSheetIndex++) { #region 图最大列 int mImageColMerage = 0; // 图最大列 Dictionary<int, List<string>> dicImagePath = new Dictionary<int, List<string>>(); if (mColImage > -1) { List<int> lstImageColLen = new List<int>(); for (int i = iSheetIndex * 10000; i < dtSources[k].Rows.Count; i++) { List<string> lstImagePath = dtSources[k].Rows[i][mColImage].ToString().Trim(‘,‘).Split(new char[] { ‘,‘ }, StringSplitOptions.RemoveEmptyEntries).ToList(); dicImagePath[i] = lstImagePath; lstImageColLen.Add(lstImagePath.Count()); } mImageColMerage = lstImageColLen.Max(); } #endregion //create sheet string sheetName = string.Empty; if (iSheetCount>1) { sheetName = sheetname[k] + iSheetIndex; } else { sheetName = sheetname[k]; } ISheet sheet = workbook.CreateSheet(sheetName); sheet.PrintSetup.Landscape = true; //是否横向排版 sheet.FitToPage = false; //是否自适应页面 sheet.PrintSetup.Scale = 50; //缩放比例 //填充列标题以及样式 int rowsNum = 0; //行号 IRow headerRow = sheet.CreateRow(rowsNum); ICellStyle headStyle = workbook.CreateCellStyle(); headStyle.Alignment = HorizontalAlignment.CENTER; headerRow.HeightInPoints = 20; headStyle.VerticalAlignment = VerticalAlignment.CENTER; //换行 //headStyle.WrapText = true; IFont font = workbook.CreateFont(); font.FontHeightInPoints = 13; font.Boldweight = 700; headStyle.SetFont(font); for (int i = 0; i < lstColname[k].Count; i++) { if (i < mColImage) { //合并列前 headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstColname[k][i]); headerRow.GetCell(i).CellStyle = headStyle; } else if (mColImage > -1 && i == mColImage) { headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstColname[k][i]); headerRow.GetCell(i).CellStyle = headStyle; sheet.AddMergedRegion(new CellRangeAddress(0, 0, mColImage, mColImage + mImageColMerage)); } else { //合并列后 headerRow.CreateCell(i + mImageColMerage, CellType.STRING).SetCellValue(lstColname[k][i]); headerRow.GetCell(i + mImageColMerage).CellStyle = headStyle; } //sheet.AutoSizeColumn(i); sheet.SetColumnWidth(i, 5000); //列宽 //headerRow.Cells[i].SetCellValue(new HSSFRichTextString("\r\n")); //强制换行 } ICellStyle cellStyle = workbook.CreateCellStyle(); cellStyle.Alignment = HorizontalAlignment.CENTER; cellStyle.VerticalAlignment = VerticalAlignment.CENTER; IFont cellfont = workbook.CreateFont(); cellfont.FontHeightInPoints = 10; cellStyle.SetFont(cellfont); cellStyle.WrapText = true; #region MyRegion //填充数据行 IRow dataRow = null; rowsNum = 1; //行号，从第2行开始 /// patriarch 画图的顶级管理器，一个sheet只能获取一个（一定要注意这点） HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch(); //填充内容 for (int i = iSheetIndex * 10000; i < dtSources[k].Rows.Count; i++) { dataRow = sheet.CreateRow(i + 1); for (int j = 0; j < dtSources[k].Columns.Count; j++) { //sheet.SetColumnWidth(j, 5000); //sheet.AutoSizeColumn(j); if (j < mColImage) { //合并列前 dataRow.CreateCell(j).SetCellValue(dtSources[k].Rows[i][j].ToString()); dataRow.GetCell(j).CellStyle = cellStyle; } else if (mColImage > -1 && j == mColImage) { int mImgIndex = 0; foreach (var item in dicImagePath[i]) { string imgPath = HttpContext.Current.Server.MapPath(item); if (File.Exists(imgPath)) { byte[] bytes = System.IO.File.ReadAllBytes(imgPath); int pictureIdx = workbook.AddPicture(bytes, PictureType.JPEG); ///// patriarch 画图的顶级管理器，一个sheet只能获取一个（一定要注意这点） //HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch(); // 插图片的位置 HSSFClientAnchor（dx1,dy1,dx2,dy2,col1,row1,col2,row2) //图片左上角为（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, 1000, 250, mColImage + mImgIndex, i + 1, mColImage + mImgIndex, i + 1); //把图片插到相应的位置 HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx); //pict.Resize(0.7); //用图片原始大小来显示 } mImgIndex++; } dataRow.CreateCell(j).SetCellValue(""); dataRow.GetCell(j).CellStyle = cellStyle; sheet.AddMergedRegion(new CellRangeAddress(i + 1, i + 1, mColImage, mColImage + mImageColMerage)); } else { //合并列后 dataRow.CreateCell(j + mImageColMerage).SetCellValue(dtSources[k].Rows[i][j].ToString()); dataRow.GetCell(j + mImageColMerage).CellStyle = cellStyle; } } } #endregion } } string strPhysicsPath = HttpContext.Current.Server.MapPath(Config.AccPath + "Temp/Export"); if (!Directory.Exists(strPhysicsPath)) { Directory.CreateDirectory(strPhysicsPath); } //string resultUrl = Config.LogPath.Replace("~", HttpContext.Current.Request.Url.Host + ":" + HttpContext.Current.Request.Url.Port) + "Temp/" + DateTime.Today.Year; string tempUrl = "/" + DateTime.Today.ToString("MMdd-") + Guid.NewGuid().ToString() + ".xls"; strPhysicsPath = strPhysicsPath.TrimEnd(‘\\‘) + tempUrl; //------- using (MemoryStream ms = new MemoryStream()) { ms.Flush(); ms.Position = 0; workbook.Write(ms); using (FileStream fs = new FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write)) { byte[] fData =http://www.mamicode.com/ ms.ToArray(); fs.Write(fData, 0, fData.Length); fs.Flush(); } LogHelper.WriteExportLog(filename); return Config.AccPath.Replace("~", "") + "Temp/Export" + tempUrl; } #region 浏览器下载 //供浏览器下载Excel //if (HttpContext.Current.Request.Browser.Browser == "IE") // FileName = HttpUtility.UrlEncode(FileName); //using (MemoryStream ms = new MemoryStream()) //{ // ms.Position = 0; // workbook.Write(ms); // ms.Flush(); // HttpContext curContext = HttpContext.Current; // // 设置编码和附件格式 // curContext.Response.ContentType = "application/vnd.ms-excel"; // curContext.Response.ContentEncoding = Encoding.UTF8; // curContext.Response.Charset = ""; // curContext.Response.AppendHeader("Content-Disposition", // "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8)); // curContext.Response.BinaryWrite(ms.GetBuffer()); // ms.Close(); // ms.Dispose(); // curContext.Response.End(); //} #endregion }
导出EXCEL,可以导出多个sheet
/// <summary> /// 导出EXCEL,可以导出多个sheet /// </summary> /// <param name="dtSources">原始数据数组类型</param> /// <param name="strFileName">路径</param> public static string ExporMultiSheet(DataTable[] dtSources, List<List<string>> lstname, List<string> sheetname, string filename) { //创建工作薄 IWorkbook workbook = new HSSFWorkbook(); string FileName = filename + ".xls"; for (int k = 0; k < dtSources.Length; k++) { ISheet sheet = workbook.CreateSheet(sheetname[k]); //设置列宽 sheet.SetColumnWidth(0, 30 * 256); sheet.SetColumnWidth(1, 30 * 256); sheet.SetColumnWidth(2, 20 * 256); sheet.SetColumnWidth(3, 20 * 256); sheet.SetColumnWidth(4, 20 * 256); sheet.SetColumnWidth(5, 25 * 256); //填充表头 //填充列标题以及样式 int rowsNum = 0; //行号 IRow headerRow = sheet.CreateRow(rowsNum); ICellStyle headStyle = workbook.CreateCellStyle(); headStyle.Alignment = HorizontalAlignment.CENTER; headStyle.VerticalAlignment = VerticalAlignment.CENTER; //换行 headStyle.WrapText = true; headerRow.HeightInPoints = 20; IFont font = workbook.CreateFont(); font.FontHeightInPoints = 13; font.Boldweight = 700; headStyle.SetFont(font); for (int i = 0; i < lstname[k].Count; i++) { headerRow.CreateCell(i, CellType.STRING).SetCellValue(lstname[k][i]); headerRow.GetCell(i).CellStyle = headStyle; //headerRow.Cells[i].SetCellValue(new HSSFRichTextString("\r\n")); //强制换行 } ICellStyle cellStyle = workbook.CreateCellStyle(); cellStyle.Alignment = HorizontalAlignment.CENTER; cellStyle.VerticalAlignment = VerticalAlignment.CENTER; IFont cellfont = workbook.CreateFont(); cellfont.FontHeightInPoints = 10; cellStyle.SetFont(cellfont); cellStyle.WrapText = true; //填充数据行 IRow dataRow = null; rowsNum = 1; //行号，从第2行开始 //填充内容 for (int i = 0; i < dtSources[k].Rows.Count; i++) { dataRow = sheet.CreateRow(i + 1); for (int j = 0; j < dtSources[k].Columns.Count; j++) { dataRow.CreateCell(j).SetCellValue(dtSources[k].Rows[i][j].ToString()); dataRow.GetCell(j).CellStyle = cellStyle; } } } //保存 string strPhysicsPath = HttpContext.Current.Server.MapPath(Config.AccPath + "Temp/Export"); if (!Directory.Exists(strPhysicsPath)) { Directory.CreateDirectory(strPhysicsPath); } string tempUrl = "/" + DateTime.Today.ToString("MMdd-") + Guid.NewGuid().ToString() + ".xls"; strPhysicsPath = strPhysicsPath.TrimEnd(‘\\‘) + tempUrl; using (MemoryStream ms = new MemoryStream()) { ms.Flush(); ms.Position = 0; workbook.Write(ms); using (FileStream fs = new FileStream(strPhysicsPath, FileMode.Create, FileAccess.Write)) { byte[] fData =http://www.mamicode.com/ ms.ToArray(); fs.Write(fData, 0, fData.Length); fs.Flush(); } LogHelper.WriteExportLog(filename); return Config.AccPath.Replace("~", "") + "Temp/Export" + tempUrl; } }
图片base64形式怎么转为图片
String u = "Base64"; // Base64解码 byte[] b = new BASE64Decoder().decodeBuffer(u); // 生成图片 String imgName = "echartsPhoto"; String filePath = ServletActionContext.getServletContext().getRealPath("/") + "echarts"; String fileName = filePath +"/"+ imgName +".png"; File file = new File(filePath); if(!file.exists()){ file.mkdir(); } OutputStream out = new FileOutputStream(new File(fileName)); out.write(b);18 out.close();
NOPI导出多个sheet,一列图片
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