Java TCP协议通信超详细讲解

ServerSocket serverSocket = new ServerSocket(6666); //绑定端口号为6666的端口

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
/**
 * 服务端
 * @author Administrator
*
*/
public class Server {
	public static void main(String[] args) {
		ServerSocket server = null;
		Socket socket = null;
		try {
			//准备服务器端用的通讯对象（套接字）,指明端口号为8888
			server = new ServerSocket(8888);
			//到指定端口去阻塞监听,一旦有客户端请求发送过来，那么立即自动与客户端建立连接
			socket = server.accept();
			System.out.println("服务器端准备ok");
			//我要发送到客户端的内容
			String msg = "你好,我是服务器，这是我的第一次通讯,请问你收到了吗";
			OutputStream os = socket.getOutputStream();//准备输出对象
			BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os));
			bw.write(msg);
			bw.newLine();
			bw.flush();
			//接收客户端发送的信息
			InputStream is = socket.getInputStream();
			BufferedReader br = new BufferedReader(new InputStreamReader(is));
			String reply = br.readLine();
			System.out.println("我是服务器，接收到信息："+reply);
			br.close();
			is.close();
			bw.close();
			os.close();
			socket.close();
			server.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.UnknownHostException;
/**
 * 客户端
 * @author Administrator
*
*/
public class Client {
	public static void main(String[] args) {
		Socket socket = null;
		try {
			socket = new Socket("localhost", 8888);
			System.out.println("客户端准备完成");
			//客户端开始接受请求
			InputStream is = socket.getInputStream();
			BufferedReader br = new BufferedReader(new InputStreamReader(is));
			String msg = br.readLine();
			System.out.println("我是客户端，接收到信息："+msg);
			//客户端接收到服务器端的信息之后，需要反馈信息给服务器
       	 //客户端想要反馈给服务器端的信息 
			String reply = "我是客户端，收到你的信息，这是我的反馈";
			OutputStream os = socket.getOutputStream();//准备客户端的输出流
			BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(os));
			bw.write(reply);
			bw.newLine();
			bw.flush();
			bw.close();
			os.close();
			br.close();
			is.close();
			socket.close();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}