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Error when parsing an embedded .xlsx file from a .ppt using apache-poi. The supplied POIFSFileSystem does not contain a BIFF8 'Workbook' entry

I am facing an issue when using apache poi to extract an embedded .xlsx files from a .ppt file. It would be really great if somebody could help me out.
The subject of the problem:
Problem trying to solve: Extracting a ".xlsx" file embedded inside a ".ppt".
I am currently using apache-poi.
It seems that when I try to do it using hslfSlideShow.getEmbeddedObjects(), I get the xlsx object just fine but when I try converting it to the XLSFWorkbook object using say WorkbookFactory.create(inputStream), it threw an error saying
java.lang.IllegalArgumentException: The supplied POIFSFileSystem does not contain a BIFF8 'Workbook' entry. Is it really an excel file? Had: [OlePres000, Ole, CompObj, Package]
at org.apache.poi.hssf.usermodel.HSSFWorkbook.getWorkbookDirEntryName(HSSFWorkbook.java:286)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:326)
at org.apache.poi.hssf.usermodel.HSSFWorkbookFactory.createWorkbook(HSSFWorkbookFactory.java:64)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:167)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:112)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:253)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:221)
Interestingly it is calling HSSFWorkbookFactory even though its an xlsx file.
And no the xlsx file is not corrupted/password-protected. I can open it just fine.
Also, it works fine if I try parsing the .xlsx file without embedding it in the .ppt.
And the parsing works fine when I embed it in a .pptx file and call methods such as xmlSlideShow.getAllEmbeddedParts() to get the embedded objects from .pptx.

Promoting some comments and investigation to an answer...
This was a limitation in older version of Apache POI, but was fixed in July in r1880164.
For backwards-compatibility reasons, PowerPoint will often (but not always...) write embedded OOXML resources wrapped in an intermediate OLE2 layer. This has the advantage that tools/programs which expect embedded office documents to be something like a xls / doc to cope, but at the expense of another layer of wrapping.
Newer versions of Apache POI (5.0 should be the first released one with the fix in) have support in WorkbookFactory for receiving an OLE2 wrapper like this, pulling out the underlying xlsx stream and handing that off to XSSFWorkbook. (Older versions did this for OLE2-based password-protected xlsx files, but not their unencrypted cousins)
For now, if you're stuck on an affected POI version, the code you'll want is something like this (largely taken from the unit test verifying support!):
POIFSFileSystem fs = new POIFSFileSystem(data.getInputStream());
if(fs.getRoot().hasEntry("Package")) {
DocumentInputStream dis = new DocumentInputStream((DocumentEntry)fs.getRoot().getEntry("Package"));
try (OPCPackage pkg = OPCPackage.open(dis)) {
XSSFWorkbook wb = new XSSFWorkbook(pkg);
handleWorkbook(wb);
wb.close();
}
} else {
try (HSSFWorkbook wb = new HSSFWorkbook(fs)) {
handleWorkbook(wb);
}
}

POI corrupt xlsm file once XSSFWorkbook.createName is called

My requirements is to create an XSSFName using XSSFWorkbook.createName(). My code is :
Name name = myworkbook.createName();
...
myworkbook.write(fos);
But I get this error from excel when I open it :
Excel found unreadable content in 'filename.xlsm'. Do you want to reciver the contents of this workbook? If you trust the source of this workbook, click Yes.
I want to avoid this message.
I'm using org.apache.poi 3.14
My workbook is an instance of XSSFWorkbook, before I was using HSSFWorkbook and I did not have this problem. The implementation of createName is different from XSSF to HSSF.
There is other people having the same issue but with an old version

How to Edit/Modify an existing Excel file in Java with Jexcel API

I want to edit an existing Excel file with Java, to add some more data to an existing template excel file. So i used Jexcel for this purpose.
As suggested everywhere, I tried the following,
Workbook existingWorkbook = Workbook.getWorkbook(new File("H://"+file_name));
WritableWorkbook copy = Workbook.createWorkbook(new File("H://"+file_name+"_temp1.xls"));
But it shows an exception in the second line.
jxl.common.AssertionFailed
at jxl.common.Assert.verify(Assert.java:37)
at jxl.read.biff.SheetReader.handleObjectRecord(SheetReader.java:1811)
at jxl.read.biff.SheetReader.read(SheetReader.java:1059)
at jxl.read.biff.SheetImpl.readSheet(SheetImpl.java:716)
at jxl.read.biff.WorkbookParser.getSheet(WorkbookParser.java:257)
at jxl.write.biff.WritableWorkbookImpl.copyWorkbook(WritableWorkbookImpl.java:969)
at jxl.write.biff.WritableWorkbookImpl.<init>(WritableWorkbookImpl.java:343)
at jxl.Workbook.createWorkbook(Workbook.java:339)
at jxl.Workbook.createWorkbook(Workbook.java:320)
at run_book.process_input.<init>(process_input.java:83) <--create workbook stt.
.........<stack trace goes on>
So how could one edit an already existing jexcel file.
I did get another warning
Warning: Text Object on sheet "sheet2" not supported - omitting
Thanks in advance :)

Figured out the problem.
We have to close the input file before writing back (editing) the same file.
so to edit an existing Excel file with Jexcel
File inp = new File("H://"+file_name);
File out = new File("H://"+file_name);
Workbook existingWorkbook = Workbook.getWorkbook(inp);// This opens up a read-only copy of the workbook
WritableWorkbook copy = Workbook.createWorkbook(out,existingWorkbook); // This opens up a writable workbook so that we can edit the copy
//..........Some writes to excel workbook...........
// Now before writing & closing the copy, first close the existing one
existingWorkbook.close(); // Important: Close it before writing the copy with copy.write();
inp.close();
copy.write();
copy.close();

I ran into this same issue and to solve the problem I updated to the latest version of jxl.jar via maven. After doing this there was a very long delay when it ran destinationWorkbook = Workbook.createWorkbook(outputFile, sourceWorkbook); but it completed successfully without errors.

Apache POI HSSF XLS reading error

Using the following code while reading in a .xls file, where s is the file directory:
InputStream input = new FileInputStream(s);
Workbook wbs = new HSSFWorkbook(input);
I get the following error message:
Exception in thread "main" java.io.IOException: Invalid header signature; read 0x0010000000060809, expected 0xE11AB1A1E011CFD0
I need a program that is able to read in either XLSX or XLS, and using the exact same code just adjusted for XSSF it has no problem at all reading in the XLSX file.

The Exception you're getting is one telling you that the file you're supplying isn't a valid Excel binary file, at least not a valid Excel file produced since about 1990. The exception you're getting tells you what POI expects, and that it found something else instead which wasn't a valid .xls file, and wasn't anything else POI can detect.
One thing to be aware of is that Excel opens a wide variety of different file formats, including .csv and .html. It's also not very picky about the file extension, so will happily open a CSV file that has been renamed to a .xls one. However, since renaming a .csv to a .xls doesn't magically change the format, POI still can't open it!
.
From the exception, I can tell what's happening, and I can also tell you're using an ancient version of Apache POI! A header signature of 0x0010000000060809 corresponds to the Excel 4 file format, from about 25 years ago! If you use a more recent version of Apache POI, it'll give you a helpful error message telling you that the file supplied is an old and largely unsupported Excel file. New versions of POI do include the OldExcelExtractor tool which can pull out some information from those ancient formats.
Otherwise, as with all exceptions of this type, try opening the file in Excel and doing a save-as. That will give you an idea of what the file currently is (eg .html saved as .xls, .csv saved as .xls etc), and will also let you re-save it as a proper .xls file for POI to load and work with.

If the file is in xlsx format instead of xls you might get this error. I would try using the generic Workbook object (Also called the SS Usermodel)
Check out the Workbook interface and the WorkbookFactory object. The factory should be able to create a generic Workbook for you out of either xlsx or xls.
I thought I had a good tutorial on this, but I can't seem to find it. I'll keep looking though.
Edit
I found this little tiny snippet from Apache's site about reading and rewriting using the SS Usermodel.
I hope this helps!

Invalid header signature; read 0x342E312D46445025, expected 0xE11AB1A1E011CFD0
Well I got this error when I uploaded corrupted xls/xlsx file(to upload corrupt file I renamed sample.pdf to sample.xls). Add validation like :
Workbook wbs = null;
try {
InputStream input = new FileInputStream(s);
wbs = new HSSFWorkbook(input);
} catch(IOException e) {
// log "file is corrupted", show error message to user
}

how to solve JXL error : jxl.read.biff.BiffException: Unable to recognize OLE stream

i am trying to get cell data from my .csv file but it gets error :
jxl.read.biff.BiffException: Unable to recognize OLE stream
I don't understand how to solve this,please give me some solution
this code is for jxl api & is that api support to .csv?
Code for reference:
public void read() throws IOException, BiffException {
File inputWorkbook = new File(inputFile);
try
{
w = Workbook.getWorkbook(inputWorkbook.getAbsoluteFile());
// Get the first sheet
Sheet sheet = w.getSheet(0);
// Loop over first 10 column and lines
for (row = 1; row < sheet.getRows(); row++)
{
ReadExcelLotSizeEntity readExcelLotSizeEntity =new ReadExcelLotSizeEntity();
cell = sheet.getCell(1,row);
type= cell.getType();
if (cell.getType() == CellType.LABEL)
{
symbol=cell.getContents();
System.out.println(":::::::::::::::::"+symbol);
readExcelLotSizeEntity.setSymbol(symbol);
}
int col=2;
cell = sheet.getCell(col,row);
while(!cell.getContents().equals("")||cell.getContents()!=null)
{
System.out.println("||||||||||||||||"+cell.getContents());
cell=sheet.getCell(col,row);
col++;
}
lotSize= new Double(cell.getContents());
readExcelLotSizeEntity.setLotSize(lotSize);
readExcelLotSizeEntity.setCreateUserId(1L);
readExcelLotSizeEntity.setCreateDtTm(new Date());
readExcelLotSizeHome.persist(readExcelLotSizeEntity);
}
} catch (BiffException e) {
e.printStackTrace();
}
}

I was also facing this problem earlier. I googled and read this post and many other posts that were asking for solution to this BiffException. I don't have the exact solution but as I fixed my problem you can do it too, perhaps.
I was trying to read data from the Excel file saved in MS Office 2010 and I was getting this error. I saved the file as an Excel 2003-7 and then read it without any problem. It may the case that this problem occurs in Office 10 but not in Office 2003-7.
I hope this will work in your case.

Saving File as "Excel 97-2003 Workbook" type solved my issue.

JXL library doesnot support .csv and .xslx formats, which is the format used by Excel-2010. hence, use Excel 97-2003 which is .xls foramatted and is supported by JXL library.
or else if you want to use excel-2010, use APACHE POI(XSSFWorkbooks) instead of JXL.
For using .csv format, google for CSVReader libraries.

JXL is a simple (and hence limited) API. If it says
Unable to recognize OLE stream
it is what it is. It doesn't quite understand your Excel XLS file. Have confidence that the error is legitimate. This API only supports *.xls files; it doesn't support, for example, *.csv or *.xlsx files. Obviously, having the file renamed to *.xls alone is not sufficient. It must be in Excel 97-2003 format too.
Copy all the cells from your *.csv or *.xlsx file.
Open MS Excel and paste the copied cells.
Save the file as MS Excel 97-2003 (*.xls) file.
This error will surely not appear again.
On the other hand, if you want to process other formats (xlsx, csv) directly, look for other tools like Apache POI.

Save the Excel file type as Excel 97-2003 Worksheet and extension type as xls

Actually you are using different version of csv file .Please save it in the exact version.
For ex: we should save the excel sheet in word as 9

save the file as Excel 97-2003 and also change the file format from xlsx to xlx , in the code(in the file name)

I was trying to read data from the Excel file saved in MS Office 2010 and I was getting this error. I saved the file as an Excel 2003-7 and then read it without any problem. It may the case that this problem occurs in Office 10 but not in Office 2003-7