Trying to read a file into a byte array

[jcampom]

Greetings!
i am using the following piece of code to read a file ( .tmm extension ) from the internal storage of my mobile device ( nokia 1680)

InputStream tmmFile = getClass().getResourceAsStream(path);
byte[] tmmData = new byte[tmmFile.available()];
tmmFile.read(tmmData);

path = "file:///C:/predefgallery/predefphotos/FILENAME.tmm"

In the 2nd line of the code shown above, an error is prompted
Uncaught exception java/lang/NullPointerException.

The file exists in this path ..... and i don't have any other path to store this file - i uploaded it thru MobiMB ( Mobile Media Browser )

Am i doing something (or all ) wrong? =0)

Looking forward to receive your views from above,

[grahamhughes]

Class.getResourceAsStream() does not operate on a URL. The argument must be the name of a file in the application's JAR file.

To access a file in the phone's file system, you need to use the FileConnection API. Note that this API is subject to a variety of security restrictions, including restricted access to certain parts of the file system, and security prompts to the user for access permission.

Useful wiki pages:

* File Connection API (JSR 75)

* How to Read an Image from the Gallery in Java ME

Graham.

[jcampom]

Thanx graham for your kind answer.
If it works, i'll post the entire code.
The purpose is to send a file from the mobile device to a webserver.
This is just the part 1 of the entire task =0) the part 2 is to receive the bytearray in ASP.NET and store it in the server's filesystem.

So far, very thank you.

[jcampom]

Thanx Graham! with your help, my code works! The file is read from the internal storage and is uploaded to the webserver thru a ASP.NET .aspx page.

This is the final code to read the file from the internal storage:

public void EnviarFichero(String iPath) throws IOException{
	String path =iPath;
	Image img = null;
	String sURL = "http://webserver/virtualfolder/upload.aspx";
	HttpConnection httpConnection = null;
	DataOutputStream os = null;
        String mensaje="";

	//img = Image.createImage(path);
	httpConnection = (HttpConnection) Connector.open(sURL, Connector.READ_WRITE, false);
	httpConnection.setRequestProperty("Connection", "keep-alive");
	httpConnection.setRequestMethod(HttpConnection.POST);


        String photos = "fileconn.dir.photos";
        path = System.getProperty(photos) + iPath;
       
	
        try {
            FileConnection fc = (FileConnection)Connector.open(path, Connector.READ);
            if(!fc.exists()) {
                System.out.println("Archivo no existe!");
            }
            else {
                int size = (int)fc.fileSize();
                InputStream is = fc.openInputStream();
                byte bytesFichero[] = new byte[size];
                is.read(bytesFichero, 0, size);

                httpConnection.setRequestProperty("Content-Type", "multipart/form-data");
                httpConnection.setRequestProperty("Content-Length", bytesFichero.length + "");
                os = httpConnection.openDataOutputStream();

                // enviar el archivo
                int index = 0;
                int sizeMaximo = 1024;
                do{
                    System.out.println("write:" + index);
                    if((index+sizeMaximo)>bytesFichero.length){
                        sizeMaximo = bytesFichero.length - index;
                    }
                    os.write(bytesFichero, index, sizeMaximo);
                    index+=sizeMaximo;
                }while(index<bytesFichero.length);
                os.flush();

                mensaje=iPath + " enviado.";
            }

        } catch (IOException ioe) {
            mensaje="IOException: "+ioe.getMessage();
        } catch (IllegalArgumentException iae) {
            mensaje="IllegalArgumentException: "+iae.getMessage();
        }

        Alert Alerta1 =  new Alert("Status", mensaje, null, AlertType.INFO);
        pantalla=Display.getDisplay(this);
        pantalla.setCurrent(Alerta1);

}//fin de public void EnviarFichero

This is the code in the ASP.NET page "upload.aspx"

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Introducir aquí el código de usuario para inicializar la página
        If Not Page.IsPostBack Then
            Dim str As System.IO.Stream, strmContents As String
            Dim counter, strLen, strRead As Integer


            str = Request.InputStream ' Create a Stream object.strArr
            strLen = CInt(str.Length) ' Find number of bytes in stream.
            Dim strArr(strLen) As Byte  ' Create a byte array.
            strRead = str.Read(strArr, 0, strLen) ' Read stream into byte array.


            ' Create a file and write the byte data to a file.
            Dim oFileStream As System.IO.FileStream
            oFileStream = New System.IO.FileStream(Server.MapPath("_tmm/" & Date.Now.Ticks.ToString), System.IO.FileMode.Create)
            oFileStream.Write(strArr, 0, strArr.Length)
            oFileStream.Close()
        End If
    End Sub

I have two final questions:


1) Is there a way to put the real name to the uploaded file? that is, in the j2me code, i sent the bytes, not the name. I had to assign a name to the uploaded file, based upon the Ticks property of the Date class (in ASP.NET ....) but i would like to assign the real name "as is" in the mobile internal storage.

2) Is there a way to initialize the FileBrowser "control" to start in a predefined folder, in order to avoid the navigation thru the filesystem of the device ( every time i navigate thru the folder it prompts me the security restrictions and i hope you agree with me: IS ANNOYING ....!!! =0) - or at least just one question...?

Thanx in advance and very thanx again for your kind help!