Sending file list from Server to Client in java Socket programming - PrintWriter can't send?

Question

How can I send the file listing to client from server using Socket programming. I have used DataOutputStream and PrintWriter, both returns only one file name to Client. I know there is some problem in '\n'. But unable to solve it. Awaiting experts advice ... Thank you.

Client

switch (choice) {

.......

  case 2: // for viewing files in the client's directory
  Socket mysocket = new Socket("localhost", 6103);
  String user_name = username;
  DataOutputStream outToServer2= new DataOutputStream(mysocket.getOutputStream());
  outToServer2.writeBytes(user_name + '\n');
  BufferedReader inFromServer2 = new BufferedReader(newInputStreamReader(mysocket.getInputStream()));
  String list = inFromServer2.readLine();
  System.out.println("FROM SERVER - LIST OF FILES:" + list);

  break;

}

.......

Server

import java.io.*;
import java.net.*;

class DirList
{
   public static void main(String argv[]) throws Exception
      {
         String clientSentence;
         String capitalizedSentence;
         ServerSocket welcomeSocket = new ServerSocket(6103);

         while(true)
         {
            Socket connectionSocket = welcomeSocket.accept();
            BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
            PrintWriter outToClient = new PrintWriter(connectionSocket.getOutputStream(),true);
            clientSentence = inFromClient.readLine();
            System.out.println("Received view files request from user: " + clientSentence);
            String path = "/home/user/Files/";
            String userdir = path + clientSentence;
            String text="";
            String capitalizedSentence1;
            File f = new File(userdir);
                File[] listOfFiles = f.listFiles();
                for (int j = 0; j < listOfFiles.length; j++) {
                        if (listOfFiles[j].isFile()) {
                                text = listOfFiles[j].getName();
                                outToClient.println(text);
                                System.out.print(text+' ');

                   }
                }


         }
      }
}

`outToClient.println` change it to `outToClient.print` and flush the output after the `for` loop. — nullpotent, Sep 15 '12 at 09:57

Reimeus · Accepted Answer · 2012-09-15T10:12:19.760

3

You need to flush the output from your server:

outToClient.flush();

Also, in your client, you need to place the read in a loop to consume all the output:

String line = null;
while ((line = inFromServer2.readLine()) != null) {
   System.out.println(line);
}

edited Sep 15 '12 at 10:12

answered Sep 15 '12 at 09:57

Reimeus

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That's what I want ... Got it, Thanks a lot :) – highlander141 Sep 15 '12 at 10:17

score 0 · Answer 2 · answered Sep 15 '12 at 09:57

0

Try using "\r\n". It might solve your problem.

answered Sep 15 '12 at 09:57

conectionist

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Sending file list from Server to Client in java Socket programming - PrintWriter can't send?

2 Answers2