How to send a file..?
Haiya...
I'm trying to send a txt file within an Ambient system using TCP.
Is there any java.net API methods which I can use to transfer
the whole file to the other end? I can't use DatagramSocket class's
send () because it requires bytes of data...
I can probably use like... <i copied it from the tuts>
byte[] buf = new byte[256];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
But, my data is String, and the DatagramPacket constrcutor paramters
are Byte type. The data is already stored as txt file in the client computer.
I'm looking for a way to transfer that file to the server system.
Any existing API methods..? Appreciated, very much.
Jey
[791 byte] By [
Java_Jey] at [2007-9-26 4:27:36]
these following functions may help u...
pacific
DatagramPacket recvPacket () throws IOException
{
byte [] bytes = new byte [chatServer.PACKET_SIZE];
DatagramPacket clientPacket = new DatagramPacket (bytes, bytes.length);
threadSocket.receive (clientPacket);
return clientPacket;
}
void sendPacket (String clientMessage) throws IOException
{
byte [] bytes = clientMessage.getBytes ();
DatagramPacket packetToSend = new DatagramPacket (bytes,bytes.length,clientAddress,clientPort);
threadSocket.send (packetToSend);
}
String extractMessage (DatagramPacket clientPacket)
{
byte [] clientData = clientPacket.getData ();
String clientMessage = (new String (clientData)).trim ();
return clientMessage;
}
hi,
So, how're files normally transferred in Java lang.? The data is transferred
into stream of arrays via TCP and then the bytes of data is assembled back
at the destination to create a file?
If you know, would you mind giving me some website regarding datagrams,
file transfers techniques regarding in Java?
Thanks for replying my early mail.
Jey
Hi Pacific,
Thanks a lot for your code. I haven't fully checked the code you gave
yet...it looks like it can only transfer a String data. Is there any other
built in java lib. methods I can use which can transfer a binary file
to another computer.
Thanks very much.
Jey
hi,
yeah, the code works only for the string data transfer. to my knowledge there is no library available for transfering the binary file thru datagramsockets.
But java provides enuf libraries using which u can write the similar functions for other type of data. just c various types of IOstreams....
~Pacific
