Hi,
You received an answer at
https://lists.apache.org/thread.html/460102624d77cf10f0e6a259c2f84163f73f5772bfdc6bcf38377a43@%3Cdev.poi.apache.org%3E
but you did not react in any way to that, so what do you expect?
If you post to dev-list, you are expected to also look at the dev-list for
answers.
Dominik.
On Sun, Jan 13, 2019 at 5:43 AM Kevin Yao <ahutsunsh...@gmail.com> wrote:
> I am very disappointed about that.
>
> On Sat, Jan 5, 2019 at 10:20 AM Kevin Yao <ahutsunsh...@gmail.com> wrote:
>
> > Can andbody help me ? I will be very grateful.
> >
> > Thanks，
> > Kevin
> >
> > On Fri, Jan 4, 2019 at 8:12 PM Kevin Yao <ahutsunsh...@gmail.com> wrote:
> >
> >> hi，
> >> I get a null exception when I use workbook write function with Apache
> POI.
> >> My java code is
> >>
> >> try (OutputStream out = new FileOutputStream(saveUrl)) {
> >> workbook.write(out);
> >> } catch (IOException e) {
> >> System.err.println(e.getMessage());
> >> }
> >>
> >>
> >> The exception log is shown below.
> >>
> >> java.lang.NullPointerException
> >> at
> >>
> org.apache.poi.poifs.filesystem.FilteringDirectoryNode$FilteringIterator.<init>(FilteringDirectoryNode.java:193)
> >> at
> >>
> org.apache.poi.poifs.filesystem.FilteringDirectoryNode$FilteringIterator.<init>(FilteringDirectoryNode.java:188)
> >> at
> >>
> org.apache.poi.poifs.filesystem.FilteringDirectoryNode.getEntries(FilteringDirectoryNode.java:101)
> >> at
> >>
> org.apache.poi.poifs.filesystem.FilteringDirectoryNode.iterator(FilteringDirectoryNode.java:105)
> >> at
> >> org.apache.poi.poifs.filesystem.EntryUtils.copyNodes(EntryUtils.java:71)
> >> at
> >> org.apache.poi.hssf.usermodel.HSSFWorkbook.write(HSSFWorkbook.java:1407)
> >> at
> >> org.apache.poi.hssf.usermodel.HSSFWorkbook.write(HSSFWorkbook.java:1375)
> >> at QuestionnaireExcel.writeExcelToLocal(QuestionnaireExcel.java:42)
> >> at Main.main(Main.java:18)
> >>
> >> The exception is the same as the url
> >> *
> https://stackoverflow.com/questions/35654570/nullpointerexception-on-writing-excel-file-with-apache-poi
> >> <
> https://stackoverflow.com/questions/35654570/nullpointerexception-on-writing-excel-file-with-apache-poi
> >.*
> >>
> >> I searched a lot on Google but didn't find a useful solution. Could you
> >> give me some advice to solve it ?
> >>
> >> Thanks,
> >> Kevin
> >>
> >
>
