BufferedImage through FTP

[dudejonne]

I can choose between one of these lines to send an image to my ftp server:

ftp.stor(new File("img.jpg"));
ftp.stor(new FileInputStream(new File("img.jpg")), "img.jpg");
ftp.stor(someSocket.getInputStream(), "img.jpg");

But all I have is a BufferedImage called bimg. How can I create a jpg out of that bimg or send the BufferedImage as jpg in one of those three lines?

Note: I will use this application on my server so I cannot first save it and then send it.

[masijade]

See the API docs for ImageIO

[travishein]

  /**
   * puts an image to a ftp server. assumes ftp is already open / connected.
   * @param bimg the image
   * @param ftp that ftp client handle you're using there 
   * @param fileName the name to stor as
   */
  public void ftpPutImage(final BufferedImage bimg, FTP ftp, String fileName) {
      final PipedOutputStream pout = new PipedOutputStream();
      PipedInputStream pin = new PipedInputStream(pout);
      
      // i don't know if the image io will block or until the ftp stor is finished, so thats why  i run it in a thread here.
      Thread writerThread = new Thread(new Runnable() {
        public void run() {
          ImageIO.write(bimg, "png", pout);
        }
      });
      writerThread.start();
      
      ftp.stor(pin, fileName);
  }

[dudejonne]

Hm, it gives me an error:
image.java:206: local variable bimg is accessed from within inner class; needs t
o be declared final
ImageIO.write(bimg, "png", pout);
^

And also, should I change file name to something like "image.jpg" for example?

[travishein]

yea, you see in my example, i did that

ftpPutImage(final BufferedImage bimg

[dudejonne]

I use this code for ftp:

SimpleFTP ftp = new SimpleFTP();
    
ftp.connect("clipboard.site11.com", 21, "myusername", "mypass");
    
ftp.bin();
    
ftp.cwd("public_htm");

String fileName = "image.jpg";
    
ftpPutImage(bimg, ftp, fileName);

ftp.disconnect();

But I get this error:

image.java:181: cannot find symbol
symbol : class FTP
location: class image
public void ftpPutImage(final BufferedImage bimg, FTP ftp, String fileName) {
^
1 error

[travishein]

right, i was just using FTP as example, this should be that SimpleFTP thing

public void ftpPutImage(final BufferedImage bimg, SimpleFTP ftp, String fileName)

[masijade]

See, that's why you don't just simply provide code dumps. They usually expect to be able to just block copy cut-n-paste them and don't bother to even try to understand them. IOW they don't learn anything and you can settle back and expect to continue doing there work for them.