//发送消息的线程
package 实验1;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;

public class SendThread extends Thread{

		private Socket send;
		public SendThread(Socket send){
			this.send = send;
		}
		public void run() {
			
			OutputStream os;
			try {
				while(true){
				os = send.getOutputStream();
				OutputStreamWriter osw = new OutputStreamWriter(os);
				BufferedWriter bw = new BufferedWriter(osw);
				PrintWriter pw = new PrintWriter(bw);
				
				Scanner sc = new Scanner(System.in);
				String send = sc.nextLine();
				if(!send.equalsIgnoreCase("exit")){
					pw.println(send);
					pw.flush();
				}
				}
				
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}
	
}
//接收消息的线程
package 实验1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;

public class ReciveThread extends Thread{

	private Socket recive;
	public ReciveThread(Socket recive){
		this.recive = recive;
	}
	public void run() {
		InputStream is;
		try {
			while(true){
			is = recive.getInputStream();
			InputStreamReader isr = new InputStreamReader(is);
			BufferedReader br = new BufferedReader(isr);
			
			String recive = br.readLine();
			System.out.println(recive);
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	
		
	}
}



//客户端充当 用户1
package 实验1;

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class Client {
	
	public static void main(String[] args) {		
		
		try {
			Socket s = new Socket("localhost",55555);
			SendThread se = new SendThread(s);
			ReciveThread re = new ReciveThread(s);
			
			se.start();
			re.start();
			
			} catch (UnknownHostException e) {
			
			e.printStackTrace();
		} catch (IOException e) {
			
			e.printStackTrace();
		}
		
		
		
	}
}


//服务器端充当 用户2
package 实验1;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

	public static void main(String[] args) {
	try {
			ServerSocket ss = new ServerSocket(55555);
			Socket s = ss.accept();
			SendThread se = new SendThread(s);
			ReciveThread re = new ReciveThread(s);
			
			se.start();
			re.start();
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}	
		

	}

}