1,添加NOPI的引用
下载地址:http://download-codeplex.sec.s-msft.com/Download/Release?ProjectName=npoi&DownloadId=1432518&FileTime=130691232697500000&Build=21066
2,添加命名空间
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
/// <summary> /// 导入 /// </summary> /// <returns></returns> public ActionResult ImportExcel() { Dictionary<String, Object> result = new Dictionary<String, Object>(); StringBuilder errorMsg = new StringBuilder(); // 错误信息 try { string tempFile = Server.MapPath("~/ExcelFiles/");//路径 string repath = Request["repath"]; //将Excel文件上传到本地服务器 HttpPostedFileBase uploadFile = Request.Files[repath];// 获取上传的文件 var filePath = string.Format("{0}{1}", tempFile, uploadFile.FileName); // 上传服务器的文件保存路径 uploadFile.SaveAs(filePath);//保存文件 ////Excel文档流转换成DataTable DataTable dt = ExcelToDataTable(filePath, true); // 将数据存储到数据库 AidMeasureService.ExcelDataSave(dt); //将上传的文件删除 System.IO.FileInfo nfile = new System.IO.FileInfo(filePath); if (nfile.Exists) { nfile.Delete(); } } catch (Exception ex) { LogHelper.WriteLog("MeasureController.ImportExcel()", ex); result.Add("Success", false); result.Add("ErrorInfo", ex.ToString()); return Json(result); } result.Add("Success", true); return Json(result); } /// <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 (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read)) { // 2007版本 if (filePath.IndexOf(".xlsx") > 0) workbook = new XSSFWorkbook(stream); // 2003版本 else if (filePath.IndexOf(".xls") > 0) workbook = new HSSFWorkbook(stream); 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; } }
