https://issues.apache.org/bugzilla/show_bug.cgi?id=49609
Summary: Part name comparison in ZipPackage should be
case-insensitive
Product: POI
Version: 3.7-dev
Platform: Macintosh
Status: NEW
Severity: normal
Priority: P2
Component: XSSF
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=25777)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=25777)
XLSX file that can't be opened with POI 3.7-dev
Attempting to open the attached file fails with the following error:
Exception in thread "main"
org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should
contain a content type part [M1.13]
at
org.apache.poi.openxml4j.opc.ZipPackage.getPartsImpl(ZipPackage.java:147)
at org.apache.poi.openxml4j.opc.OPCPackage.getParts(OPCPackage.java:588)
at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:222)
at
org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:63)
The file opens normally in Microsoft Excel 2008 for Mac. If the file is saved
as a Microsoft 97 file, POI opens it normally.
The file is from a non-standard source (a scientific instrument that saves its
output as an .xlsx file). The file contains a part name "[content_types].xml"
(lower case), but the ZipPackage.getPartsImpl method expects the name
"[Content_Types].xml" (mixed case).
The exception is caused by a call to
entry.getName().equals(ContentTypeManager.CONTENT_TYPES_PART_NAME). According
to the Open Packaging Convention, "Part name equivalence is determined by
comparing part names as case-insensitive ASCII strings."
The bug also occurs in Windows XP.
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