Corey Nelson wrote:
>So I spent a couple days reading the web site and documentation and getting
>all excited and I decided I'm ready to start coding. So I crack my knuckles
>and whip up a quick sample app just to make sure I understand the basics...
>and it doesn't work. :(
>
>------------------------------------
>import javax.swing.*;
>import java.io.*;
>import net.sourceforge.poi.poifs.filesystem.*;
>
>/**
> * Open an OLE CD file and count the entries.
> *
> * @author Corey Nelson
> *
> * Excuse the sloppy style. :)
> */
>public class DemoApp1 extends JFrame {
>
> public DemoApp1() {
> // Get user to choose a file
> JFileChooser fileChooser = new JFileChooser();
> int retVal = fileChooser.showOpenDialog(this);
> if(retVal == JFileChooser.APPROVE_OPTION) {
> File file = fileChooser.getSelectedFile();
> System.out.println(file);
>
> try{
> // Get an InputStream and POI Filesystem
>from the file
> InputStream in = new FileInputStream(file);
> Filesystem fs = new Filesystem();
>
> // Count the entries in root
> DirectoryEntry root = fs.getRoot();
> System.out.println(root.getName() + " " +
>root.getEntryCount());
> }
> catch(IOException e) {
> System.out.println(e);
> }
> }
> }
>
> public static void main (String args[]) {
> DemoApp1 app = new DemoApp1();
> System.exit(0);
> }
>
>}
>------------------------------------
>
>Here's some results:
>
>C:\Documents and Settings\CoreyN\My Documents\NotebookTestFiles\5.nbk
>Root Entry 0
>
>C:\Documents and Settings\CoreyN\Book1.xls
>Root Entry 0
>
>C:\Documents and Settings\CoreyN\My Documents\todo.txt
>Root Entry 0
>
>------------------------------------
>
>I'm sure I'm just doing something dumb or misunderstanding some fundamental
>concept here. Shouldn't I be able to open and read an OLE Compound Document
>this way? Shouldn't the Root have some entries? Shouldn't opening a none OLE
>CD produce some sort or exception?
>
>I'd appreciate it if someone could clue me in. Thanks.
>
>Corey
>
>
>
>
>
Try "FileSystem fs = new FileSystem(in);"
Your code, as written, is opening the file, then ignoring the file and
creating a brand new POIFS file system and reading its root entry. Being
a brand new file system, it has no files in its root ...
Marc
