1,添加NOPI的引用
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;
}
}
