How to convert org.apache.myfaces.trinidad.model.UploadedFile to java.io.File in Java?

It’s pretty common to have to convert an org.apache.myfaces.trinidad.model.UploadedFile to a java.io.File when working with an ADF <af:inputFile>.

Working with a java.io.File being the only way to retrieve values from a CSV.

Here is a simple code snippet to do so :

	public static File uploadedFileToFileConverter(UploadedFile uf) {
	InputStream inputStream = null;
	OutputStream outputStream = null;
	//Add you expected file encoding here:
	System.setProperty("file.encoding", "UTF-8");
	File newFile = new File(uf.getFilename());
	try {
	inputStream = uf.getInputStream();
	outputStream = new FileOutputStream(newFile);
	int read = 0;
	byte[] bytes = new byte[1024];
	while ((read = inputStream.read(bytes)) != -1) {
	outputStream.write(bytes, 0, read);
	}
	} catch (IOException e) {
	//Do something with the Exception (logging, etc.)
	}
	return newFile;
	}

view raw uploadedFileToFileConverter.java hosted with by GitHub