Re: Can POIFS convert PDF to OLE

[mbenetin <mb...@gmail.com>]

Hello all,
i have solved problem for embedding txt ole objects to word(using POI). It
should be similar for PDFs.

this is procedure:
1.create template word document with embedded empty file in word.
2.use 
http://apache-poi.1045710.n5.nabble.com/file/n4770470/Ole10Native.java
Ole10Native.java . It is edited class from POIs Ole10Native.
3. in code use:
		final PackagePart packagePart = document.getAllEmbedds().get(0);//document
is XWPFDocument
		
		final POIFSFileSystem fs = new
POIFSFileSystem(packagePart.getInputStream());
		
		final Ole10Native ole =
Ole10Native.createFromEmbeddedOleObject(fs);//before mentioned Ole10Native
class
		
		Entry entry = fs.getRoot().getEntry(Ole10Native.OLE10_NATIVE);
		
		//Deletes old ole
		entry.delete();
		
		//creates new content
		byte[] newContent = "New Content of embedded ole object".getBytes();

		//Creates new ole
		fs.getRoot().createDocument(Ole10Native.OLE10_NATIVE, new
ByteArrayInputStream(ole.getOutputStream(newContent).toByteArray()));
		
		ByteArrayOutputStream stream = new ByteArrayOutputStream();
		fs.writeFilesystem(stream);
		
		//Save package part
		OutputStream os3 = packagePart.getOutputStream();
		try{
			os3.write(stream.toByteArray());
			os3.flush();
		} finally {
			os3.close();
		}

4. save document to some file

Note: this just changes content of embedded file. Does not affect e.g. name
of icon displayed in word as embedded file

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