Export HTML data table to Excel using POI

Can you please let me know how we can proceed in this case, we have pure HTML data in the form of tables that needs to be converted into a custom excel sheet.

This is the original code I wrote, I am getting exception -> Error: Invalid header signature; read 0x6D78206C6D74683C, expected 0xE11AB1A1E011CFD0 | #]

    // Resulting byte stream from the DB
    resultBytes = dokumentSession.getXlsZuAuftrag(ts);
    if (resultBytes != null && resultBytes.length > 0) {
        try {
            InputStream fos = new ByteArrayInputStream(resultBytes);
            HSSFWorkbook workbook = new HSSFWorkbook(fos);
            workbook.createSheet("sheet1");
            FileOutputStream fileOut = new FileOutputStream("ipa_loader.xls");
            workbook.write(fileOut);
            fileOut.close();
        } catch (Exception e)
        {// Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }
    }

      

        
        
        
      

    

Please let me know any resources on this, any help is appreciated.