Question

I’m trying to generate a PDF document from an uploaded “.docx” file using JODConverter.
The call to the method that generates the PDF is something like this :

File inputFile = new File("document.doc");
File outputFile = new File("document.pdf");

// connect to an OpenOffice.org instance running on port 8100
OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100);
connection.connect();

// convert
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
converter.convert(inputFile, outputFile);

// close the connection
connection.disconnect();

I’m using apache commons FileUpload to handle uploading the docx file, from which I can get an InputStream object. I’m aware that Java.io.File is just an abstract reference to a file in the system.

I want to avoid the disk write (saving the InputStream to disk) and the disk read (reading the saved file in JODConverter).

Is there any way I can get a File object refering to an input stream? just any other way to avoid disk IO will also do!

EDIT: I don’t care if this will end up using a lot of system memory. The application is going to be hosted on a LAN with very little to zero number of parallel users.

Answer 1

File-based conversions are faster than stream-based ones (provided by StreamOpenOfficeDocumentConverter) but they require the OpenOffice.org service to be running locally and have the correct permissions to the files.

Try the doc to avoid disk writting:

convert(java.io.InputStream inputStream, DocumentFormat inputFormat, java.io.OutputStream outputStream, DocumentFormat outputFormat)