Java：Socket编程

1.Server端

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

public class Server{
    public final static int PORT = 6666;
    public static void main(String[] args){
        ServerSocket ss = null;
        DataInputStream dis = null;
        DataOutputStream dos = null;
        
        Socket s = null;
        try{
            ss = new ServerSocket(PORT);
            while(true){
                System.out.println("wait for client...");
                s = ss.accept();
                System.out.println("client link success!");
                dis = new DataInputStream(s.getInputStream());
                dos = new DataOutputStream(s.getOutputStream());
                new Thread(new ServerSend(dos)).start();
                new Thread(new ServerRecv(dis)).start();
            }
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

//启动新的线程发送信息给Client
class ServerSend implements Runnable{
    private DataOutputStream dos = null;
    public ServerSend(DataOutputStream dos){
        this.dos = dos;
    }
    
    public void run(){
        Scanner sc = new Scanner(System.in);
        while(true){
            try{
                String content = sc.nextLine();
                System.out.println("Server: " + content);
                dos.write(content.getBytes());
                dos.flush();
            }catch(Exception e){
                e.printStackTrace();
            }
            
        }
    }
}


//启动新的线程接收Client发来的信息
class ServerRecv implements Runnable{
    private DataInputStream dis = null;
    public ServerRecv(DataInputStream dis){
        this.dis = dis;
    }
    
    public void run(){
        try{
            byte[] buffer = new byte[1024*10];
            int length = -1;
            while((length = dis.read(buffer)) != -1){
                String str = new String(buffer,0,length);
                System.out.println("Client: "+str);
            }
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

 

2.Client端

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

public class Client{
    public final static String IP = "127.0.0.1";
    public final static int PORT = 6666;
    public static void main(String[] args){
        Socket s  = null;
        DataInputStream dis = null;
        DataOutputStream dos = null;
        try{
            System.out.println("start link sever...");
            s = new Socket(IP,PORT);
            System.out.println("link sever success!");
            dis = new DataInputStream(s.getInputStream());
            dos = new DataOutputStream(s.getOutputStream());
            new Thread(new ClientRecv(dis)).start();
            new Thread(new ClientSend(dos)).start();
            
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

//启动新的线程发送信息给Server
class ClientSend implements Runnable{
    private DataOutputStream dos = null;
    public ClientSend(DataOutputStream dos){
        this.dos = dos;
    }
    
    public void run(){
        Scanner sc = new Scanner(System.in);
        while(true){
            try{
                String content = sc.nextLine();
                System.out.println("Client: " + content);
                dos.write(content.getBytes());
                dos.flush();
            }catch(Exception e){
                e.printStackTrace();
            }
        }
    }
}

//启动新的线程接收Server发来的信息
class ClientRecv implements Runnable{
    private DataInputStream dis = null;
    public ClientRecv(DataInputStream dis){
        this.dis = dis;
    }
    
    public void run(){
        try{
            byte[] buffer = new byte[1024*10];
            int length = -1;
            while((length = dis.read(buffer)) != -1){
                String str = new String(buffer,0,length);
                System.out.println("Server: "+str);
            }
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

 

 

3.测试结果