java最简单的网络通信

客户端代码：

package socket;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Socket;

public class Client {
	public static void main(String[] args) throws Exception {
		//连接到指定主机的指定端口
		@SuppressWarnings("resource")
		Socket client = new Socket("localhost", 9999);
		BufferedReader reader = new BufferedReader(
				new InputStreamReader(client.getInputStream()));
		String message = reader.readLine();
		System.out.println("服务端:" + message);
		reader.close();
	}
}

服务端代码：

package socket;

import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {
	public static void main(String[] args) throws Exception {
		//1.创建服务端，指定端口号
		@SuppressWarnings("resource")
		ServerSocket server = new ServerSocket(9999);
	//	server.setSoTimeout(10000);
		System.out.println("等待客户端的连接.......");
		Socket socket = server.accept();
		System.out.println("客户端已连接到,服务端开始发送消息......");
		OutputStream out = socket.getOutputStream();
		out.write("客户端你好!你已经连接到了服务端.......".getBytes());
		socket.close();
		//write.close();
	}
}