同时收发消息

这是因为接受和发送都在主线程中，不能同时进行。 为了实现同时收发消息，基本设计思路是把收发分别放在不同的线程中进行

1. SendThread 发送消息线程
2. RecieveThread 接受消息线程
3. Server一旦接受到连接，就启动收发两个线程
4. Client 一旦建立了连接，就启动收发两个线程
 
 
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package socket;
 
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;
 
public class SendThread extends Thread{
 
    private Socket s;
 
    public SendThread(Socket s){
        this.s = s;
    }
    public void run(){
        try {
            OutputStream os = s.getOutputStream();
            DataOutputStream dos = new DataOutputStream(os);
 
            while(true){
                Scanner sc = new Scanner(System.in);
                String str = sc.next();
                dos.writeUTF(str);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
         
    }
     
}

 

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package socket;
 
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;
 
public class RecieveThread extends Thread {
 
    private Socket s;
 
    public RecieveThread(Socket s) {
        this.s = s;
    }
 
    public void run() {
        try {
            InputStream is = s.getInputStream();
 
            DataInputStream dis = new DataInputStream(is);
            while (true) {
                String msg = dis.readUTF();
                System.out.println(msg);
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 
    }
 
}

 

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package socket;
 
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(8888);
 
            System.out.println("监听在端口号:8888");
            Socket s = ss.accept();
 
            //启动发送消息线程
            new SendThread(s).start();
            //启动接受消息线程
            new RecieveThread(s).start();
 
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 
    }
}

 

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package socket;
 
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("127.0.0.1", 8888);
 
            // 启动发送消息线程
            new SendThread(s).start();
            // 启动接受消息线程
            new RecieveThread(s).start();
 
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

posted on 2018-12-29 11:46  我是司  阅读(424)  评论(0)  编辑  收藏  举报

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