file upload

[bejoy_ak]

hi
i want to upload a .png file to an ftp server..can anyone send me a sample code for the same...

[debayandas]

The file upload code can be downloaded from Sony Ericsson website.

Here's the J2ME client side code -

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.file.*;
import javax.microedition.io.*;
import java.io.*;

public class UPLOAD_FileConnection extends MIDlet implements Runnable, CommandListener{

    private final String FILE = "/image.jpg";
    private final String URL = "http://localhost/debayan/post.php"; // change this to a valid page.

    private final String CrLf = "\r\n";

    private Form form = null;
    private Gauge gauge = null;
    private Command exitCommand;
    private Command uploadCommand;

    public UPLOAD_FileConnection(){
        form = new Form("Upload File");
        gauge = new Gauge("Progress:", true, 100, 0);
        form.append(gauge);

        exitCommand = new Command("Exit", Command.EXIT, 0);
        uploadCommand = new Command("Upload", Command.SCREEN, 0);
        form.addCommand(exitCommand);
        form.addCommand(uploadCommand);

        form.setCommandListener(this);
    }

    public void startApp() {
        Display.getDisplay(this).setCurrent(form);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    private void progress(int total, int current){
        int percent = (int) (100 * ((float)current/(float)total));
        gauge.setValue(percent);
    }

    public void run() {
        httpConn();
    }

    private void httpConn(){
        HttpConnection conn = null;
        OutputStream os = null;
        InputStream is = null;

        try{
            conn = (HttpConnection)Connector.open(URL);
            conn.setRequestMethod(HttpConnection.POST);
            //InputStream imgIs = getClass().getResourceAsStream("/image.jpg");

            FileConnection fconn = (FileConnection)Connector.open("file:///E:/image.jpg", Connector.READ_WRITE);
            InputStream imgIs = fconn.openInputStream();
            //InputStream imgIs = fconn;

            byte []imgData = new byte[imgIs.available()];

            imgIs.read(imgData);

            String message1 = "";
            message1 += "-----------------------------4664151417711" + CrLf;
            message1 += "Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"" + FILE + "\"" + CrLf;
            message1 += "Content-Type: image/jpg" + CrLf;
            message1 += CrLf;

            // the image is sent between the messages ni the multipart message.

            String message2 = "";
            message2 += CrLf + "-----------------------------4664151417711--" + CrLf;

            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=---------------------------4664151417711");
            // might not need to specify the content-length when sending chunked data.
            // conn.setRequestProperty("Content-Length", String.valueOf((message1.length() + message2.length() + imgData.length)));

            System.out.println("open os");
            os = conn.openOutputStream();

            System.out.println(message1);
            os.write(message1.getBytes());

            // SEND THE IMAGE
            int index = 0;
            int size = 1024;
            do{
                System.out.println("write:" + index);
                if((index+size)>imgData.length){
                    size = imgData.length - index;
                }
                os.write(imgData, index, size);
                index+=size;
                progress(imgData.length, index); // update the progress bar.

            }while(index<imgData.length);
            System.out.println("written:" + index);

            System.out.println(message2);
            os.write(message2.getBytes());
            os.flush();

            System.out.println("open is");
            is = conn.openInputStream();

            char buff = 512;
            int len;
            byte []data = new byte[buff];
            do{
                System.out.println("READ");
                len = is.read(data);

                if(len > 0){
                    System.out.println(new String(data, 0, len));
                }
            }while(len>0);

            System.out.println("DONE");

        }catch(Exception e){
            System.out.println("ERROR" + e);
        }finally{
            System.out.println("Close connection");
            try{
                os.close();
            }catch(Exception e){}
            try{
                is.close();
            }catch(Exception e){}
            try{
                conn.close();
            }catch(Exception e){}
        }
    }

    public void commandAction(javax.microedition.lcdui.Command command, javax.microedition.lcdui.Displayable displayable) {
        if(command == exitCommand){
            this.notifyDestroyed();
        }else if(command == uploadCommand){
            new Thread(this).start();
        }
    }
}

And here's the PHP server side part -

<?php

$target_path = "uploads/";

$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
    echo "The file ".  basename( $_FILES['uploadedfile']['name']). 
    " has been uploaded";
} else{
    echo "There was an error uploading the file, please try again!";
}

?>

Find this line of code and change the highlighted text according to your need.

FileConnection fconn = (FileConnection)Connector.open("file:///E:/image.jpg", Connector.READ_WRITE);

I made some changes to the original code. See if it works for you or download the original.

Also you may try the following link -

http://wiki.forum.nokia.com/index.php/HTTP_Post_multipart_file_upload_in_Java_ME

[bejoy_ak]

i want to upload the file to an ftp server...please give me a sample code on that...

[im2amit]

Ref to http://www.forum.nokia.com/forum/showthread.php?t=13914

Do want to do it S40 phone ? or S60.

On S40, socket is not available so you cant connect directly to FTP server.

On S60, you can try porting this: http://www.jibble.org/simpleftp/ to J2me.

thanks,
~Amitabh

[bejoy_ak]

Thanks for your reply. What can be done for s40 phone?

[grahamhughes]

Series 40s (2nd edition and later) support sockets too, depending on network configuration.

I suggest you seriously consider HTTP rather than FTP (and use the code posted by debayandas), as handsets are more likely to be configured correctly with HTTP support, rather than raw TCP support. If the device is not configured for a TCP connection (or the user's data plan doesn't support it) then SocketConnections won't work.

Graham.

[im2amit]

For S40, best way is to put a HTTP Proxy server in between which can tansport your file to FTP server.

From client you can make a multipart HTTP request and transfer all file meta data, FTP creditals and URL to the proxy which can connect to the FTP server on TCP and transfer the file to it.

Refer to: http://wiki.forum.nokia.com/index.ph...oad_in_Java_ME


thanks,
~Amitabh

[bejoy_ak]

Amitabh i tried the simpleFTP given by you but its showing socket class not found....so what should i do to make it working code....also i hve to go for FTP since my client requested that....

[im2amit]

You need to port it to J2me, it doesnt have socket class but can open socket connection using GCF.

SocketConnection sc = (SocketConnection)
Connector.open("socket://FTPhost.com:21");


thanks,
~Amitabh

[bejoy_ak]

thanks Amitabh for your reply..i will try and let u know the result....