Question

我只想使用NPOI SXSSF方法流式处理xlsx文件。但是当我在打开下载流式Excel文件时弹出消息：

Excel在“ MyExcelFile.xlsx”中发现了不可读的内容。你想要_____吗恢复工作簿的内容？如果您相信这个来源工作簿，单击是。

我的代码：

Response.Headers.Add("Content-disposition", "attachment; filename=\"MyExce.xlsx\"");
Response.Headers.Add("Content-type", "octet-stream");


SXSSFWorkbook wb = new SXSSFWorkbook();
SXSSFSheet sheet = (SXSSFSheet)wb.CreateSheet("FirstSheet");

IRow row = sheet.CreateRow(0);
ICell cell = row.CreateCell(0);
cell.SetCellValue("firstCell");

//Write file to output stream
wb.Write(Response.Body);
wb.Close();
Response.Body.Flush();

我在做什么错了？

Answer 1

对于wb.Write，它将在Response.Body和public void DownloadFile() { MemoryStream ms = new MemoryStream(); using (MemoryStream stream = new MemoryStream()) { Response.Headers.Add("Content-disposition", "attachment; filename=\"MyExce.xlsx\""); Response.Headers.Add("Content-type", "octet-stream"); SXSSFWorkbook wb = new SXSSFWorkbook(); SXSSFSheet sheet = (SXSSFSheet)wb.CreateSheet("FirstSheet"); IRow row = sheet.CreateRow(0); ICell cell = row.CreateCell(0); cell.SetCellValue("firstCell"); //Write file to output stream wb.Write(stream); var byteArray = stream.ToArray(); ms.Write(byteArray, 0, byteArray.Length); ms.Seek(0, SeekOrigin.Begin); ms.WriteTo(Response.Body); } }被破坏之后处置流。

请尝试以下代码，以保存流并将保存的流写入正文。

$str = 'Scale Lengths

4 string model - E A D G
5 string model - B E A D G
6 string model - B E A D G C

B
37″';
// We split your string by lines.
$lines = explode("\n", $str);
// We filter this new array by sub array base on regex pattern.
$findedPattern = array_filter($lines, function($line) {
    // if is empty line, just ignore it.
    if(empty($line))
        return false;
    // We match all string who start by number, then followed b "string model - " and finally finish by letter and space.
    return preg_match('/^\d+ string model \- [A-Z\s]+\s+$/', $line);
});

NPOI使用SXSSFWorkbook创建Excel-打开时出错

1 个答案: