socket超简单实例

public class SocketServer {

    public static void main(String[] args) {
        makeSocketSerer();
    }
    
    public static void makeSocketSerer(){
        
        ServerSocket serverSocket = null;
        try{
            //启动一个服务,指定端口
            serverSocket = new ServerSocket(8888);
            while(true){
                //等待一个接收请求
                Socket socket = serverSocket.accept();
                //lamda表达式
                new Thread(()->{
                    try {
                        //读取客户端带来的数据
                        BufferedReader bufferReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                        //返回给客户端数据
                        PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
                        
                        while(true){
                            String getClientDate = bufferReader.readLine();
                            if(getClientDate == null){
                                break;
                            }
                            System.out.println("server端接收到的消息内容： "+getClientDate);
                            
                            printWriter.println("Hello socket Client!!!");
                            printWriter.flush();
                        }
                        printWriter.close();
                        bufferReader.close();
                    } catch (Exception e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }).start();
            }
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if(serverSocket != null){
                try {
                    serverSocket.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
        
    }
}

public class SocketClient {
    
    public static void main(String[] args) {
        makeSocketClient();
    }
    
    public static void makeSocketClient(){
        try {
            //定一个ip和端口的socket连接
            Socket socket = new Socket("localhost", 8888);
            
            //接收服务端返回的消息
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            
            //往服务端发送消息
            PrintWriter printWriter = new PrintWriter(socket.getOutputStream(), true);
            printWriter.println("Hello socket Server !!!");
            
            while(true){
                String getServerData = bufferedReader.readLine();
                if(getServerData == null){
                    break;
                }
                System.out.println("Client接收到的数据： "+getServerData);
            }
            
            printWriter.close();
            socket.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}