Java POI the supplied data appears to be in the Office 2007+ XML

Question

I am getting this error:

org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are call

Answer 1

I was using XSSF with a xlsx file, but got this error when I tried to process a file that was encrypted/protected with a password.

Once I removed the password, everything worked as expected.

Answer 2

According to the Apache POI Quick Guide, the POIFSFileSystem (or similarly, NPOIFSFileSystem) is only used with .xls (Excel versions through 2003) documents.

The equivalent for .xlsx documents (Excel 2007+) is OPCPackage.

OPCPackage pkg = OPCPackage.open(new File("file.xlsx"));

You can create an XSSFWorkbook from the OPCPackage:

XSSFWorkbook wb = new XSSFWorkbook(pkg);

Or you can just create it directly:

XSSFWorkbook wb = new XSSFWorkbook(new File("file.xlsx"));

Generally it's better to create the workbook using a File instead of an InputStream, to save memory.

Also, if you want code that doesn't care whether it's an .xls or an .xlsx:

// or "file.xlsx"
Workbook wb = WorkbookFactory.create(new File("MyExcel.xls"));

Answer 3

well actually there is no OPCPackage, I am using https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml/3.5-beta5 so you have to:

import org.apache.poi.openxml4j.opc.Package;
....
Package fs = Package.open(new ByteArrayInputStream(container.getContent()));
            XSSFWorkbook wb = new XSSFWorkbook(fs);
            XSSFSheet sheet = wb.getSheetAt(0);
            XSSFRow row;
            XSSFCell cell;