j2me - How can zip and unzip on j2me ?????

[thanhlnh]

I try to use "jazzlib-j2me-0.0.7.jar" and code

public void zipBytes(String filename, byte[] input) throws IOException {
        FileConnection fnn = (FileConnection) Connector.open("file:///e:/TestZip.zip", Connector.READ_WRITE);
        fnn.create();
        ZipOutputStream zos = new ZipOutputStream(fnn.openDataOutputStream());
        ZipEntry entry = new ZipEntry(filename);
        entry.setSize(input.length);
        zos.putNextEntry(entry);
        zos.write(input);
        zos.closeEntry();
        zos.close();
    }

    public byte[] getByteDAta() {
        byte[] imageData = new byte[0];
        try {
            int CHUNK_SIZE = 1024;
            InputStream fis = null;
            String path = "file:///e:/ABCDEG.log";
            FileConnection fileConn = (FileConnection) Connector.open(path, Connector.READ_WRITE);
            try {
                fileConn = (FileConnection) Connector.open(path);
            } catch (Exception e) {
                Logger.printErrorln("Exception " + e);
                fileConn = (FileConnection) Connector.open(path, Connector.READ_WRITE);
            }

            fis = fileConn.openInputStream();
            long overallSize = fileConn.fileSize();
            Logger.printErrorln(" fileConn.fileSize = " + fileConn.fileSize());
            int length = 0;

            while (length < overallSize) {
                byte[] mdata = new byte[CHUNK_SIZE];
                int readAmount = fis.read(mdata, 0, CHUNK_SIZE);
                byte[] newImageData = new byte[imageData.length + CHUNK_SIZE];
                System.arraycopy(imageData, 0, newImageData, 0, length);
                System.arraycopy(mdata, 0, newImageData, length, readAmount);
                imageData = newImageData;
                length += readAmount;
            }
            fis.close();
            fileConn.close();
        } catch (Exception e) {
        }
        return imageData;

    }

and call it
try {
zipBytes("ABCDEG.log", getByteDAta());
} catch (IOException ex) {
ex.printStackTrace();
}

but it throw a exception :
java.io.IOException: failed to write to file
at com.nokia.mid.impl.isa.io.protocol.external.storage.Protocol$FileConnectionOutputStream.write(+86)
at java.io.DataOutputStream.write(+10)
at java.io.OutputStream.write(+8)
at net.sf.jazzlib.ZipOutputStream.putNextEntry(+389)
at App.TestZI.zipBytes(+56)
at App.TestZI$1.run(+16)
at com.sun.lwuit.Display.processSerialCalls(+107)
at com.sun.lwuit.Display.mainEDTLoop(+57)
at com.sun.lwuit.RunnableWrapper.run(+245)

Please help me !!!!

[im2amit]

You might not have access to - file:///e:/TestZip.zip on the device, try to use the default photo/images folder on the device. Try to run Sun WTK22 - PDAPDemo - File connection example and see the path on which you are able to create(read/write) the files and folders on the device.

[thanhlnh]

I tried but i can't write "zip file" in any folder.I can write *.mp3 file, *.txt file but i can't write *.zip file

[madhurij2me]

hi
am got the same exception.
Can anyone help me how to reslove this exception ?
@ thanhlnh : can you please tell how was your problem sloved ?

[grift]

hi
am got the same exception.
Can anyone help me how to reslove this exception ?
@ thanhlnh : can you please tell how was your problem sloved ?

Can you give us a sample of your code?