[英]Apache POI: content in excel file gets corrupted
I am writing a method which writes to an Excel file.我正在编写一种写入 Excel 文件的方法。 Before calling I create a Workbook and a Sheet.在调用之前,我创建了一个工作簿和一个工作表。 The code executes without any errors, but when opening the created Excel file I get the message: We found a problem with some content in...代码执行时没有任何错误,但在打开创建的 Excel 文件时,我收到消息:我们发现某些内容存在问题...
My method looks like this:我的方法是这样的:
public void writeToCell(int rowNumber, int cellNumber, Double content) {
Row row = sheet.createRow(rowNumber);
Cell cell = row.createCell(cellNumber);
cell.setCellValue(content);
try (FileOutputStream outputStream = new FileOutputStream(month + ".xlsx", true)) {
workbook.write(outputStream);
outputStream.flush();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
This is how I call the method:这就是我调用该方法的方式:
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet(month);
writeToCell(25, 4, 0.0);
writeToCell(25, 6, 23.32);
You shouldn't append data to Excel Workbook explicitly, which also point by @Axel in his comment您不应该明确地将数据附加到 Excel 工作簿,@Axel 在他的评论中也指出了这一点
try (FileOutputStream outputStream = new FileOutputStream(month + ".xlsx", true))
instead反而
try (FileOutputStream outputStream = new FileOutputStream(month + ".xlsx"))
For side note,对于旁注,
writeToCell(25, 4, 0.0);
writeToCell(25, 6, 23.32);
Last call of writeToCell
will overwrite the previous value of same 25th row.最后一次调用writeToCell
将覆盖相同第 25 行的先前值。 As, you are create new Row
in each call因为,您在每次调用中创建新Row
Row row = sheet.createRow(rowNumber);
我也有那个错误,碰巧在某些单元格中,单元格内容类型和单元格值不匹配。
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