JavaTCP Upload Text File Code

File transfer based on chat client (TXT file)

Client Code:

public class UploadClient {
 public static void main(String[] args) throws UnknownHostException, IOException {
 // TODO Auto-generated method stub
 //1 , create socket Client Object 
 Socket s = new Socket("localhost",10005);
 //2 , read local files 
 BufferedReader bufr = new BufferedReader(new FileReader("C:\\ New Folder \\client.txt"));
 //3 , Socket flow 
 PrintWriter out = new PrintWriter(s.getOutputStream(),true);
 String line = null;
 while((line=bufr.readLine())!=null){
  out.println(line);
 }
 // Tell the server that the client is done 
 s.shutdownOutput();
 //4 Read the upload success object returned by the server 
 BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));
 String str = bufIn.readLine();
 System.out.println(str);
 // close resource 
 bufr.close();
 s.close();
 }
}

Server side code:

public static void main(String[] args) throws UnknownHostException, IOException {
 // TODO Auto-generated method stub
 //1,
 ServerSocket ss = new ServerSocket(10005);
 //2, Obtain Socket object 
 Socket s = ss.accept();
 // Obtain IP
 System.out.println(s.getInetAddress().getHostAddress()+"....conected");
 //3, Obtain Socket Read streams and decorate 
 BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));
 //4, write file 
 BufferedWriter bufw = new BufferedWriter(new FileWriter("C:\\ New Folder \\server.txt"));
 String line = null;
 while((line=bufIn.readLine())!=null){
  bufw.write(line);
  bufw.newLine();// Line Break 
  bufw.flush();// Refresh Stream  
 }
 PrintWriter out = new PrintWriter(s.getOutputStream(),true);
 out.println(" Upload Successful ");
 bufw.close();
 s.close();// Close Client 
 ss.close();// Close Server 
 }

It should be noted that in the TCP transport, 1 must run the server before the client.

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