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
>>
>
