TCP简单程序

服务器段：

package com.dcz.socket;

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

public class TcpServer {

	public static void main(String[] args) {

		String data = "你好啊，socket 世界！";

		// 端口
		int port = 17001;
		ServerSocket serverSocket = null;

		try {
			serverSocket = new ServerSocket(port);
			System.out.println("服务端已经准备就绪......");

			boolean isAccept = true;
			while (isAccept) {

				Socket client = serverSocket.accept();
				InetAddress inetAddress = client.getInetAddress();
				System.out.println("客户端ip:" + inetAddress);

				OutputStream clientOutputStream = client.getOutputStream();
				clientOutputStream.write(data.getBytes());
				clientOutputStream.close();
			}
			serverSocket.close();

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

　　

客户端代码：

package com.dcz.socket;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.net.UnknownHostException;

import org.apache.commons.io.output.ByteArrayOutputStream;

public class TcpClient {

	public static void main(String[] args) {

		String address = "127.0.0.1";
		int port = 17001;
		Socket client = null;
		try {
			client =  new Socket(address, port);
			InputStream serverInputStream = client.getInputStream();

			 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

			byte[] buffer = new byte[1024];
			while((serverInputStream.read(buffer, 0, buffer.length)) != -1){
				byteArrayOutputStream.write(buffer, 0, buffer.length);
			}

			byte[] data = byteArrayOutputStream.toByteArray();

			System.out.println(new String(data, "utf-8"));

			byteArrayOutputStream.close();
			client.close();

		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

}