https://bz.apache.org/bugzilla/show_bug.cgi?id=58630
Bug ID: 58630
Summary: Signing failed after deletion of first sheet
Product: POI
Version: 3.13-FINAL
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: SS Common
Assignee: [email protected]
Reporter: [email protected]
Created attachment 33285
--> https://bz.apache.org/bugzilla/attachment.cgi?id=33285&action=edit
Test class and sample files
Hello,
we have an Excel workbook (XLSX) which we would like to read and modify.
In the end we would like to sign it.
Unfortunately we get an NullPointerException while signing, when we have
deleted the first sheet before:
java.lang.NullPointerException
at
org.apache.poi.poifs.crypt.dsig.facets.OOXMLSignatureFacet.addManifestReferences(OOXMLSignatureFacet.java:164)
at
org.apache.poi.poifs.crypt.dsig.facets.OOXMLSignatureFacet.addManifestObject(OOXMLSignatureFacet.java:100)
at
org.apache.poi.poifs.crypt.dsig.facets.OOXMLSignatureFacet.preSign(OOXMLSignatureFacet.java:89)
at
org.apache.poi.poifs.crypt.dsig.SignatureInfo.preSign(SignatureInfo.java:472)
at
org.apache.poi.poifs.crypt.dsig.SignatureInfo.confirmSignature(SignatureInfo.java:315)
Please note that this problem does not occur when we delete another sheet
instead.
Please find attached a test class and sample files.
Thanks and best regards
Constantin
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