public class ExcelExportUtils { /// <summary> /// 页面导出Excel /// </summary> /// <typeparam name="T">实体类型</typeparam> /// <param name="fileName">导出的文件名</param> /// <param name="list">数据</param> /// <param name="expItems">导出的列</param> /// <param name="fileNameAddDate">文件名自动添加导出日期</param> public static void ExportExcel<T>(string fileName, IList<T> list, ICollection<ExcelItem> expItems, bool fileNameAddDate = true) { if (list != null && list.Count > 0) { var dt = DataSetModel.FillDataTable<T>(list); ExportExcel(fileName, dt, expItems, fileNameAddDate); } } /// <summary> /// 页面导出Excel /// </summary> /// <param name="fileName">导出的文件名</param> /// <param name="dt">dt</param> /// <param name="expItems">expItems</param> /// <param name="fileNameAddDate">文件名是否追加日期</param> /// <example> /// var dt = DataSetModel.FillDataTable(list); /// string fileName = ""; /// var expItems = new List《ExportItem》(); /// expItems.Add(new ExportItem("创建时间", "CreateTime")); /// base.ExportExcel(fileName, dt, expItems); /// </example> public static void ExportExcel1(string fileName, DataTable dt, ICollection<ExcelItem> expItems, bool fileNameAddDate = true) { HttpContext context = System.Web.HttpContext.Current; bool isFireFox = context.Request.ServerVariables["http_user_agent"].ToLower().IndexOf("firefox") > -1 ? true : false; if (dt.Rows.Count > 0) { //导出数据 JArray jArray = new JArray(); JObject jItem = null; string column = null; foreach (DataRow row in dt.Rows) { jItem = new JObject(); foreach (var li in expItems) { column = li.DataName; jItem[column] = li.DataToString(row[column]); } jArray.Add(jItem); } var dtData = (DataTable)JsonConvert.DeserializeObject(jArray.ToString(), (typeof(DataTable))); if (dtData.Rows.Count > 0) { if (fileNameAddDate == true) { fileName += DateTime.Now.ToString("yyyyMMddHHmmss"); } // 设置编码和附件格式 context.Response.ContentType = "application/vnd.ms-excel"; context.Response.ContentEncoding = Encoding.UTF8; context.Response.Charset = ""; if (isFireFox) { context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + """ + fileName + ".xls" + """); } else { context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8) + ".xls"); } context.Response.BinaryWrite(Export(dtData, expItems, "1").GetBuffer()); context.ApplicationInstance.CompleteRequest(); dtData.Dispose(); } } } /// <summary> /// 页面导出Excel /// </summary> /// <param name="fileName">导出的文件名</param> /// <param name="dt">dt</param> /// <param name="expItems">expItems</param> /// <param name="fileNameAddDate">文件名是否追加日期</param> /// <example> /// var dt = DataSetModel.FillDataTable(list); /// string fileName = ""; /// var expItems = new List《ExportItem》(); /// expItems.Add(new ExportItem("创建时间", "CreateTime")); /// base.ExportExcel(fileName, dt, expItems); /// </example> public static void ExportExcel(string fileName, DataTable dt, ICollection<ExcelItem> expItems, bool fileNameAddDate = true) { HttpContext context = System.Web.HttpContext.Current; bool isFireFox = context.Request.ServerVariables["http_user_agent"].ToLower().IndexOf("firefox") > -1 ? true : false; if (dt.Rows.Count > 0) { //移除不需要导出的列 var delCol = new List<string>(); foreach (DataColumn col in dt.Columns) { var flag = expItems.Any(m => m.DataName.ToLower() == col.ColumnName.ToLower()); if (!flag) delCol.Add(col.ColumnName); } delCol.ForEach(m=>dt.Columns.Remove(m)); if (fileNameAddDate == true) { fileName += DateTime.Now.ToString("yyyyMMddHHmmss"); } // 设置编码和附件格式 context.Response.ContentType = "application/vnd.ms-excel"; context.Response.ContentEncoding = Encoding.UTF8; context.Response.Charset = ""; if (isFireFox) { context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + """ + fileName + ".xls" + """); } else { context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8) + ".xls"); } context.Response.BinaryWrite(Export(dt, expItems, "1").GetBuffer()); context.ApplicationInstance.CompleteRequest(); dt.Clear(); } } /// <summary> /// DataTable导出到Excel的MemoryStream /// </summary> /// <param name="dtSource">源DataTable</param> /// <param name="expItems">表头文本</param> /// <param name="sheetName">工作薄名称</param> /// <returns>返回</returns> private static MemoryStream Export(DataTable dtSource, ICollection<ExcelItem> expItems, string sheetName) { //设置导出列名 StringBuilder headers = new StringBuilder(); foreach (var col in expItems) { headers.Append(col.Title); headers.Append(","); } headers.Remove(headers.Length - 1, 1); #region 设置excel属性 HSSFWorkbook workbook = new HSSFWorkbook(); //设置工作薄名称 ISheet sheet = workbook.CreateSheet(sheetName); sheet.TabColorIndex = HSSFColor.Red.Index; //右击文件 属性信息 DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation(); dsi.Company = "责任公司"; dsi.Category = "业务导出";//类别 workbook.DocumentSummaryInformation = dsi; SummaryInformation si = PropertySetFactory.CreateSummaryInformation(); si.Author = "支持部"; //填加xls文件作者信息 si.ApplicationName = "平台"; //填加xls文件创建程序信息 si.LastAuthor = "支持部"; //填加xls文件最后保存者信息 si.Comments = ""; //填加xls文件作者信息 si.Title = headers.ToString(); //填加xls文件标题信息 si.Subject = "导出";//填加文件主题信息 si.CreateDateTime = DateTime.Now; workbook.SummaryInformation = si; #endregion //时间格式化格式 HSSFCellStyle dateStyle = workbook.CreateCellStyle() as HSSFCellStyle; HSSFDataFormat format = workbook.CreateDataFormat() as HSSFDataFormat; dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd HH:mm:ss"); //取得列宽 int[] arrColWidth = new int[expItems.Count]; for (int i = 0; i < dtSource.Rows.Count; i++) { int j = 0; foreach (var item in expItems) { int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][item.DataName].ToString()).Length; if (intTemp > arrColWidth[j]) arrColWidth[j] = intTemp; if (arrColWidth[j] < 7) arrColWidth[j] = 7; j++; } } int rowIndex = 0; foreach (DataRow row in dtSource.Rows) { #region 新建表，填充表头，填充列头，样式 if (rowIndex == 65535 || rowIndex == 0) { if (rowIndex != 0) { sheet = workbook.CreateSheet() as HSSFSheet; } //列头及样式 //修改把列头提到第一行 //HSSFRow headerRow = sheet.CreateRow(1) as HSSFRow; HSSFRow headerRow = sheet.CreateRow(0) as HSSFRow; HSSFCellStyle headStyle = workbook.CreateCellStyle() as HSSFCellStyle; headStyle.Alignment = HorizontalAlignment.Center; HSSFFont font = workbook.CreateFont() as HSSFFont; font.FontHeightInPoints = 10; font.Boldweight = 700; headStyle.IsLocked = true; headStyle.SetFont(font); //设置每列的文字 int i = 0; foreach (var item in expItems) { //headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName); headerRow.CreateCell(i).SetCellValue(item.Title); headerRow.GetCell(i).CellStyle = headStyle; //设置列宽 sheet.SetColumnWidth(i, (arrColWidth[i] + 1) * 256); i++; } //让列头不动 //sheet.CreateFreezePane(0, 2, 0, dtSource.Columns.Count - 1); sheet.CreateFreezePane(0, 1, 0, 1); //把内容提到第二行 // rowIndex = 2; rowIndex = 1; } #endregion //填充内容 HSSFRow dataRow = sheet.CreateRow(rowIndex) as HSSFRow; var j = 0; foreach (var item in expItems) { HSSFCell newCell = dataRow.CreateCell(j) as HSSFCell; string drValue; Type type; if (item.HasConverter) { drValue = item.Converter(row[item.DataName]); type = typeof(string); } else { drValue = row[item.DataName].ToString(); type = dtSource.Columns[item.DataName].DataType; } switch (type.ToString()) { case "System.String"://字符串类型 newCell.SetCellValue(drValue); break; case "System.DateTime"://日期类型 DateTime dateV; if(DateTime.TryParse(drValue, out dateV)) newCell.SetCellValue(dateV); newCell.CellStyle = dateStyle;//格式化显示 break; case "System.Boolean"://布尔型 bool boolV = false; bool.TryParse(drValue, out boolV); newCell.SetCellValue(boolV); break; case "System.Int16"://整型 case "System.Int32": case "System.Int64": case "System.Byte": int intV = 0; int.TryParse(drValue, out intV); newCell.SetCellValue(intV); break; case "System.Decimal"://浮点型 case "System.Double": double doubV = 0; double.TryParse(drValue, out doubV); newCell.SetCellValue(doubV); break; case "System.DBNull"://空值处理 newCell.SetCellValue(""); break; default: newCell.SetCellValue(""); break; } j++; } rowIndex++; } using (MemoryStream ms = new MemoryStream()) { workbook.Write(ms); ms.Flush(); ms.Position = 0; return ms; } } }