https://bz.apache.org/bugzilla/show_bug.cgi?id=57919
This bug is still open as it hasn't been fully implemented for all
constructors and factories yet.
On Feb 1, 2017 06:50, "Murphy, Mark" wrote:
> I thought that there was a way to save a workbook in place when using a
> File type input. But I can't find the secret sauce. If I open a Workbook
> using WorkbookFactory(new File(filename)); I cannot write to an output
> stream based on the same file name. If I write the modified workbook to an
> output stream based on a different file name, the original file is updated,
> but now I have a second file. If I do not write the changes, but instead
> just close the workbook, it does not create the second file, but it also
> does not update the existing file.
>
> So how can I update an existing spreadsheet without creating a secondary
> file? I am guessing that if I use an InputStream to open the initial file,
> I can write the updated workbook to an OutputStream without the original
> being updated?
>