Socket编程（三）demo举例

客户端Client源码如下：

public class Client {
    public static void main(String[] args) throws Exception{
        String readLine=null;
        int port=4000;

        byte ipAddressTemp[]={127,0,0,1};
        InetAddress ipAddress = InetAddress.getByAddress(ipAddressTemp);
        //1.初始化Socket
        Socket socket=new Socket(ipAddress,port);
        //创建三个流，系统输入流BufferedReader systemIn，socket输入流BufferedReader socketIn，socket输出流PrintWriter socketOut;
        BufferedReader systemIn = new BufferedReader(new InputStreamReader(System.in));
        BufferedReader socketIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        PrintWriter socketOut = new PrintWriter(socket.getOutputStream());
        while (readLine!="bye"){
            System.out.println("Client");
            readLine=systemIn.readLine();

            socketOut.println(readLine);
            socketOut.flush();    //赶快刷新使Server收到，也可以换成socketOut.println(readline, ture)

            String inTemp=socketIn.readLine();
            System.out.println("Server:
"+ inTemp);
        }
        systemIn.close();
        socketIn.close();
        socketOut.close();
        socket.close();
    }
}

服务器Server源码如下：

public class Server {
    public static void main(String[] args) throws Exception {
        String readLine=null;
        int port=4000;
        //1.初始化socket,绑定端口
        ServerSocket serverSocket=new ServerSocket(port);
        //2.调用服务器的accept（）进行阻塞（程序会在这等待），当有申请连接时会打开阻塞并返回一个socket
        Socket socket=serverSocket.accept();
        BufferedReader systemIn= new BufferedReader(new InputStreamReader(System.in));
        BufferedReader socketIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        PrintWriter socketOut=new PrintWriter(socket.getOutputStream());
        while (readLine!="bye"){
            String inTemp=socketIn.readLine();
            System.out.println("Client:
"+ inTemp);
            System.out.println("Server");
            readLine=systemIn.readLine();
            socketOut.println(readLine);
            socketOut.flush();//赶快刷新使Client收到，也可以换成socketOut.println(readline, ture)
        }
        systemIn.close();
        socketIn.close();
        socketOut.close();
        socket.close();
        serverSocket.close();
    }
}