Download File

[Amy Howard]

My J2EE application enables the users to download files in remote server. I created a stateless session bean which returns a StringBuffer that has the content of the download file. Then I tried to create a temp file to save the content of the file. But the problem is how to read this temp file. I found that it creates different file names use the following code (download****.tmp). Is there a way directly send the StringBuffer to the browse or any editor such as WordPad or NotePad to enable the user to view or download?
// Create temp file.
File temp = File.createTempFile("download", ".tmp");
// Delete temp file when program exits.
temp.deleteOnExit();

// Write to temp file
BufferedWriter out = new BufferedWriter(new FileWriter(temp));
out.write(lines_buffer.toString());
out.close();
Thanks for the help in advance!

[Michael Morris]

Hi Amy,
Well you could just use a simple swing reader like this:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class SimpleFileReader extends JFrame {
    private static int WIDTH =  300;
    private static int LENGTH = 500;
    public SimpleFileReader(StringBuffer buff) {
        super("Simple File Reader");
        JEditorPane reader = new JEditorPane();
        reader.setContentType("text/plain");
        reader.setText(buff.toString());
        JButton stop = new JButton("Dismiss");
        stop.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    System.exit(0);
                }
            }
        );
        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
        buttonPanel.add(stop);
        getContentPane().add(new JScrollPane(reader), BorderLayout.CENTER);
        getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        setSize(WIDTH, LENGTH);
        show();
    }

    public static void main(String[] args) throws Exception {
        BufferedReader in = new BufferedReader(new FileReader("beams.txt"));
        StringBuffer sb = new StringBuffer();
        String line = null;
        while((line = in.readLine()) != null) {
            sb.append(line + "\n");
        }
        new SimpleFileReader(sb);
    }
}

Michael Morris

[Amy Howard]

I solved my problem using temp.getAbsolutePath():
stream = new BufferedInputStream(new FileInputStream(temp.getAbsolutePath()));
Thanks!