[JAVA] 자바(JAVA)로 채팅방 서버 접속하기 [이클립스(Eclipse) 콘솔에서 채팅하기(2)]

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[JAVA] 자바(JAVA)로 채팅방 서버 개설하기[이클립스(Eclipse) 콘솔에서 채팅하기]

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- 자바(JAVA)로 채팅방 서버 접속하기

- TcpIpMultiChatClient.java

package chap16;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.Socket;
import java.util.Scanner;

public class TcpIpMultiChatClient {
    public static void main(String[] args) {
        if(args.length != 1) {
            System.out.println("USAGE: java TmpIpMultichatClient 대화명");
            System.exit(0);
        }
        try {
            String serverIp = "000.000.000.000"; // sever ip 입력

            Socket socket = new Socket(serverIp, 80); // server port 확인
            System.out.println("서버에 연결되었습니다.");
            Thread sender = new Thread(new ClientSender(socket, args[0]));
            Thread receiver = new Thread(new ClientReceiver(socket));

            sender.start();
            receiver.start();
        } catch (Exception e) {
        	e.printStackTrace();
        }
    }

    static class ClientSender extends Thread {
        Socket socket;
        DataOutputStream out;
        String name;

        ClientSender(Socket socket, String name) {
        	this.socket = socket;
            try {
                out = new DataOutputStream(socket.getOutputStream());
                this.name = name;
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        public void run() {
            Scanner scanner = new Scanner(System.in);
            try {
                if(out!=null) {
                    out.writeUTF(name);
                }
                while (out != null) {
                    out.writeUTF("["+name+"]"+scanner.nextLine());
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    static class ClientReceiver extends Thread {
        Socket socket;
        DataInputStream in;

        ClientReceiver(Socket socket) {
            this.socket = socket;
            try {
            	in = new DataInputStream(socket.getInputStream());
            } catch (Exception e) {
            	e.printStackTrace();
            }
        }

        public void run() {
            while(in!=null) {
                try {
                	System.out.println(in.readUTF());
                } catch (Exception e) {
                	e.printStackTrace();
                }
            }
        }
    }
}

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- 채팅방 접속 방법

'Run Configurations' 클릭

'Program arguments'에 닉네임으로 쓸 이름 입력 후, 'Run' 클릭

클라이언트 코드에서 실행(Ctrl+F11)하면 채팅방 접속 완료!

채팅 입력도 완료! / 서버 측 ip가 공인 ip가 아니면 내부망만 사용 가능

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채팅방 서버 콘솔 내용