Tcp之双向通信

TestServer.java

package com.sxt.tcp;
/*
 * 服务端
 */
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;

import javax.xml.crypto.Data;

public class TestServer {
    public static void main(String[] args) throws IOException {
        System.out.println("服务端准备就绪！");
        ServerSocket server = new ServerSocket(8888);
        //获取客户端的Socket!
        Socket accept = server.accept();
        //读    Socket获取输入流
        InputStream inputStream = accept.getInputStream();
        DataInputStream dis = new DataInputStream(inputStream);
        //读出数据
        String string = dis.readUTF();
        System.out.println(string);

        //实现双向通信 写 输出流 数据流
        DataOutputStream dos = new DataOutputStream(accept.getOutputStream());//注意！
        dos.writeUTF("服务端说：我已经收到！");

        accept.close();
        server.close();
    }
}

TestClient.java

package com.sxt.tcp2;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

/* 基于TCP协议的Socket编程
 * 双向通信
 * 通过IO流传输数据
 *
 */
//客户端
public class TestClient {
    public static void main(String[] args) throws UnknownHostException, IOException {
        Socket socket = new Socket(InetAddress.getLocalHost(), 8888);
        OutputStream os = socket.getOutputStream();//socket获取输出流

        //数据写到客户端  输出流  数据流（4个特殊的方法）
        DataOutputStream dos = new DataOutputStream(os);
        //数据写到服务端
        dos.writeUTF("客户端说：你好服务器！");

        //接收服务端的反馈信息 读  输入流
        DataInputStream dis = new DataInputStream(socket.getInputStream());//注意！
        String string = dis.readUTF();
        System.out.println(string);

        socket.close();
    }
}