https://issues.apache.org/bugzilla/show_bug.cgi?id=51444
Bug #: 51444
Summary: Writing XSSF to stream produces unreadable content
when XSSF is read from stream
Product: POI
Version: 3.7
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: XSSF
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
Created attachment 27221
--> https://issues.apache.org/bugzilla/attachment.cgi?id=27221
Junit test file, workbook.xls,workbook.xlsx
hi,
I just experience strange fact that is similar to bug 51158, but not really the
same.
When I create workbook "by hand" via new operator, I can store XSSFWorkbook to
a file(outputstream), that works ok(I don't need to store it twice-though it
yields error too)
But when I read a workbook from a stream, let's say file, and store it to
another file, virtually creating a copy, then the result file is unreadable.
Use case is, that I want to report only one sheet(current) I'm working on, then
I create a XSSFWorkbook from InputStream, remove unnecessary sheets and then
store it via write method to a new OutStream and passes that stream further for
processing. BUT this stream is unreadable, if I want to read from this stream I
get this exception:
ava.lang.NullPointerException
at org.apache.poi.POIXMLDocumentPart.read(POIXMLDocumentPart.java:256)
at org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:186)
at
org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:182)
at
org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:63)
If I write it to a file, file is unreadable.
I debugged it it I find out, that writing fails on "Dublicate entry:
docProps/core.xml" in I think DefaultMarshaller(exception is caught in
org.apache.poi.openxml4j.opc.ZipPackage.saveImpl)
I attach test file that demonstrates issues and example excel files.
I experience this error both in 3.7 and 3.8-beta3
Regards,
Milan
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