MSB wrote:
Hello,
You have got an Office 2003 xml file there, not an OpenXML file; it is an
early attempt by Microsoft to create an xml based file format for Excel and
it is in that sense a 'valid' Office file format.
Sadly, POI cannot interpret this file at all and that is why you saw the
exception when you tried to wrap it up in the InputStream and pass it to
WorkbookFactory(s) constructor. You do however have a number of options;
* You could use Excel itself and manually open and save each file you wish
to convert, as you already have done.
* If you have access to Visual Studio and can write Visual Basic or C# code
then you could use a control that will allow you to control Excel
programmatically. This way you could automate a file conversion process
using Excel itself. Then once the file has been converted wither to the
binary or OpenXML formats, POI can be used to process it.
* If you are running on a stand alone PC on which a copy of Excel is
installed and using the Windows operating system, then you could use OLE to
do something very similar from Java code. As above, POI can be used to
process the file following the conversion.
* If you have access to OpenOffice, it has a rather good API that is
accessible from Java code. You could use it to convert between the file
types for you - it is simply a matter of discovering the correct filter to
use in this case. OpenOffice is good for all except the most complex files
and you should be able to use POI to process the file following conversion.
However, if you choose this route, it may be best to do all of the work
using OpenOffice's UNO api.
* Depending upon what you want to do with the file's contents, you could
create your own parser using core java code and either the SAX or Xerces
parsers. If you simply open the original xml file using a simple text
editor, you can see that the structure is not complex and, if all you wish
to get at is the raw data it contains, this could be your best option.
Hope that helps,
Yours
Mark B
jselect wrote:
Hello!
I have the xml file: http://www.nabble.com/file/p23852396/test.xls
test.xls . This file has xml format and can be opened by MS Excel. I tried
to read this file by poi:
....
Workbook workbook = WorkbookFactory.create(new
FileInputStream("test.xls"));
...
I got exception:
Exception in thread "main" java.lang.IllegalArgumentException: Your
InputStream was neither an OLE2 stream, nor an OOXML stream
I opened this file in MS Excel and saved as real xls: test1.xls
I tried to read this file by POI - no exceptions!
And question: Is it possible to convert this xml file to xls using POI?
Thanks!
depends on your needs but if you only want to process the information
within the file. You could use xmlBeans (http://xmlbeans.apache.org/) to
read the xml file and process it that way.
Cheers
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