ASP.NET实现上传Excel功能

这几天正好用到上传Excel,并根据Excel中的数据做相应的处理,故整理以备用。

用到的资源:

(1)NOPI 2.2.0.0 可自己官网下载,也可点击:

(2)用到一些常见处理文件的公共方法类,可以添加到项目中:

如过上述连接因故无法使用,可在评论留下邮箱,我打包发送过去,如有更好的建议,欢迎指导。

后台的提示方法ShowMsgHelper,根据自己的改写即可。

前台代码:

<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>导入EXCEL,生成DataTable</title> <script src=""></script> <link href="https://www.jb51.net/Themes/Styles/Site.css" type="text/css" /> <script src="https://www.jb51.net/Themes/Scripts/FunctionJS.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function () { $("#Import").click(function () { var filename = $("#FileUpload1").val(); if (filename == '') { alert('请选择上传的EXCEL文件'); return false; } else { var exec = (/[.]/.exec(filename)) ? /[^.]+$/.exec(filename.toLowerCase()) : ''; if (!(exec == "xlsx" || exec == "xls")) { alert("文件格式不对,请上传Excel文件!"); return false; } } return true; }); }); </script> </head> <body> <form runat="server"> <div> <asp:FileUpload runat="server" /><asp:Button runat="server" Text="导入" /> </div> </form> </body> </html>

后台代码;

protected void ImpClick(object sender, EventArgs e) { try { #region 校验 var fileName = this.FileUpload1.FileName; if (string.IsNullOrWhiteSpace(fileName)) { //提示信息 ShowMsgHelper.Alert("请选择上传Excel文件"); return; } //获取上传文件扩展名称 if (!(fileName.IndexOf(".xlsx") > 0 || fileName.IndexOf(".xls") > 0)) { ShowMsgHelper.Alert("上传文件格式不正确,请核对!"); return; } #endregion #region 将Excel文件上传到服务器上临时文件夹中 //临时文件夹,根目录下/Upload/tmp/,根据自己配置选择 string path = Server.MapPath("~/") + "Upload\\tmp\\"; string retStr=UploadHelper.FileUpload(path, this.FileUpload1); if (!retStr.Equals("上传成功")) { ShowMsgHelper.Alert(retStr); return; } #endregion #region 读取Excel文件第一个表获取内容并转换成DataTable,删除临时文件,也可以自己加时间戳,维护处理 DataTable dt = this.ExcelToDataTable(path + this.FileUpload1.FileName, true); if (dt == null) { ShowMsgHelper.Alert_Error("获取失败"); return; } //示例:获取dt中的值 string test = dt.Rows[0]["name"].ToString(); string test2 = dt.Rows[1]["class"].ToString(); //删除临时文件 DirFileHelper.DeleteFile("Upload\\tmp\\" + fileName); #endregion } catch (Exception ex) { throw ex; } } /// <summary> /// 将excel导入到datatable /// </summary> /// <param>excel路径</param> /// <param>第一行是否是列名</param> /// <returns>返回datatable</returns> public DataTable ExcelToDataTable(string filePath, bool isColumnName) { DataTable dataTable = null; FileStream fs = null; DataColumn column = null; DataRow dataRow = null; IWorkbook workbook = null; ISheet sheet = null; IRow row = null; ICell cell = null; int startRow = 0; try { using (fs = File.OpenRead(filePath)) { // 2007版本 if (filePath.IndexOf(".xlsx") > 0) workbook = new XSSFWorkbook(fs); // 2003版本 else if (filePath.IndexOf(".xls") > 0) workbook = new HSSFWorkbook(fs); if (workbook != null) { sheet = workbook.GetSheetAt(0);//读取第一个sheet,当然也可以循环读取每个sheet dataTable = new DataTable(); if (sheet != null) { int rowCount = sheet.LastRowNum;//总行数 if (rowCount > 0) { IRow firstRow = sheet.GetRow(0);//第一行 int cellCount = firstRow.LastCellNum;//列数 //构建datatable的列 if (isColumnName) { startRow = 1;//如果第一行是列名,则从第二行开始读取 for (int i = firstRow.FirstCellNum; i < cellCount; ++i) { cell = firstRow.GetCell(i); if (cell != null) { if (cell.StringCellValue != null) { column = new DataColumn(cell.StringCellValue); dataTable.Columns.Add(column); } } } } else { for (int i = firstRow.FirstCellNum; i < cellCount; ++i) { column = new DataColumn("column" + (i + 1)); dataTable.Columns.Add(column); } } //填充行 for (int i = startRow; i <= rowCount; ++i) { row = sheet.GetRow(i); if (row == null) continue; dataRow = dataTable.NewRow(); for (int j = row.FirstCellNum; j < cellCount; ++j) { cell = row.GetCell(j); if (cell == null) { dataRow[j] = ""; } else { //CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,) switch (cell.CellType) { case CellType.Blank: dataRow[j] = ""; break; case CellType.Numeric: short format = cell.CellStyle.DataFormat; //对时间格式(2015.12.5、2015/12/5、2015-12-5等)的处理 if (format == 14 || format == 31 || format == 57 || format == 58) dataRow[j] = cell.DateCellValue; else dataRow[j] = cell.NumericCellValue; break; case CellType.String: dataRow[j] = cell.StringCellValue; break; } } } dataTable.Rows.Add(dataRow); } } } } } return dataTable; } catch (Exception) { if (fs != null) { fs.Close(); } return null; } }

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