Hi, on a quick look reading the content-type seems to be built into the parsing logic currently. So this would likely require more changes than simply removing a null-check.
You can have a go at org.apache.poi.openxml4j.opc.ZipPackage.EntryTriple#register, but I'd doubt it suffices to only touch the code there. You can also create a issue at https://bz.apache.org/bugzilla/ so we can collect information, but to be honest I'd not expect much progress unless you can invest a bit yourself first. Some sample files seem to be available at https://github.com/microsoft/powerbi-desktop-samples/tree/main Dominik. On Fri, Oct 13, 2023 at 12:50 AM Olivier Schmitt <schm...@metaintegration.com.invalid> wrote: > Hello, > > The Microsoft PowerBI PBIX file format is an OPC package file type. > It contains [Content_Types].xml which declares the content types of parts. > Unfortunately, the content types are declared as empty strings. > Apache POI code throws an exception, when trying to open the file. > (org.apache.poi.openxml4j.opc.OPCPackage) > Is it possible to support empty string content type for parts? > > The DotNet source code supports empty contentTypes: > > https://github.com/dotnet/runtime/blob/main/src/libraries/System.IO.Packaging/src/System/IO/Packaging/ZipPackage.cs > > Thank you. > Olivier >
