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:http://pan.baidu.com/s/1b1EMdg
(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:http://pan.baidu.com/s/1bJpHuQ
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:
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<!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 = "../../Themes/Scripts/jquery-1.8.2.min.js" ></ script > < link href = "/Themes/Styles/Site.css" rel = "external nofollow" rel = "stylesheet" type = "text/css" /> < script src = "/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 id = "form1" runat = "server" > < div > < asp:FileUpload ID = "FileUpload1" runat = "server" />< asp:Button ID = "Import" runat = "server" Text = "导入" OnClick = "ImpClick" /> </ div > </ form > </ body > </ html > |
后台代码;
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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 name="filePath">excel路径</param> /// <param name="isColumnName">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 ; } } |
以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持服务器之家!
原文链接:http://www.cnblogs.com/MichaelWillLee/p/6633674.html