我正在尝试制作一个excel文件,然后通过FileStreamResult将其发送回。我正在使用asp.net core
我开始使用NIPO示例
var newFile = @"newbook.core.xlsx";
var fs = new MemoryStream();
IWorkbook workbook = new XSSFWorkbook();
ISheet sheet1 = workbook.CreateSheet("Sheet1");
sheet1.AddMergedRegion(new CellRangeAddress(0, 0, 0, 10));
var rowIndex = 0;
IRow row = sheet1.CreateRow(rowIndex);
row.Height = 30 * 80;
row.CreateCell(0).SetCellValue("this is content");
sheet1.AutoSizeColumn(0);
rowIndex++;
var sheet2 = workbook.CreateSheet("Sheet2");
var style1 = workbook.CreateCellStyle();
style1.FillForegroundColor = HSSFColor.Blue.Index2;
style1.FillPattern = FillPattern.SolidForeground;
var style2 = workbook.CreateCellStyle();
style2.FillForegroundColor = HSSFColor.Yellow.Index2;
style2.FillPattern = FillPattern.SolidForeground;
var cell2 = sheet2.CreateRow(0).CreateCell(0);
cell2.CellStyle = style1;
cell2.SetCellValue(0);
cell2 = sheet2.CreateRow(1).CreateCell(0);
cell2.CellStyle = style2;
cell2.SetCellValue(1);
workbook.Write(fs);
但是似乎将其保存到我的项目解决方案中。
我也看到此错误
<div class="titleerror">ObjectDisposedException: Cannot access a closed Stream.</div>
根据您的代码,您可以使用正确的内容类型返回File
:
var newFile = @"newbook.core.xlsx";
var fs = new MemoryStream();
IWorkbook workbook = new XSSFWorkbook();
ISheet sheet1 = workbook.CreateSheet("Sheet1");
sheet1.AddMergedRegion(new CellRangeAddress(0, 0, 0, 10));
var rowIndex = 0;
IRow row = sheet1.CreateRow(rowIndex);
row.Height = 30 * 80;
row.CreateCell(0).SetCellValue("this is content");
sheet1.AutoSizeColumn(0);
rowIndex++;
var sheet2 = workbook.CreateSheet("Sheet2");
var style1 = workbook.CreateCellStyle();
style1.FillForegroundColor = HSSFColor.Blue.Index2;
style1.FillPattern = FillPattern.SolidForeground;
var style2 = workbook.CreateCellStyle();
style2.FillForegroundColor = HSSFColor.Yellow.Index2;
style2.FillPattern = FillPattern.SolidForeground;
var cell2 = sheet2.CreateRow(0).CreateCell(0);
cell2.CellStyle = style1;
cell2.SetCellValue(0);
cell2 = sheet2.CreateRow(1).CreateCell(0);
cell2.CellStyle = style2;
cell2.SetCellValue(1);
workbook.Write(fs);
MemoryStream memoryStream = new MemoryStream(fs.ToArray());
memoryStream.Position = 0;
return File(memoryStream, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", newFile);