java API 網絡相關

Socket：

獲取本地地址和端口號：

獲取遠端地址和端口號：

獲取網絡輸入流及輸出流

Server端：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * 服務端應用程序
 * @author wangyu
 */
public class Server {
	//服務端socket
	private ServerSocket serverSocket;
	/*
	 * 構造方法，用於初始化
	 */
	public Server(){
		try {
			serverSocket = new ServerSocket(8088);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	/**
	 * 服務器端開啓方法
	 */
	public void start()
	{
		System.out.println("等待客戶端連接。。。。");
		//監聽客戶端連接
		try {
			Socket socket = serverSocket.accept();
			System.out.println("客戶端已連接！");
			InputStream in = socket.getInputStream();
			InputStreamReader isr = new InputStreamReader(in,"UTF-8");
			BufferedReader br = new BufferedReader(isr);
			//循環讀取客戶端發送的信息
			while(true){
				System.out.println("客戶端說：" + br.readLine());
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public static void main(String[] args)
	{
		Server server = new Server();
		server.start();
	}
}

Client端：

import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

/**
 * 客戶端應用程序
 * @author wangyu
 *
 */
public class Client 
//客戶端Socket
{
	private Socket socket;
	
	/*
	 * 構造方法，用於初始化
	 */
	public Client(){
		try {
			socket = new Socket("localhost",8088);
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public void start(){
		try {
			OutputStream out = socket.getOutputStream();
			OutputStreamWriter osw = new OutputStreamWriter(out,"UTF-8");
			PrintWriter pw = new PrintWriter(osw,true);
			
			//創建scanner讀取用戶輸入內容
			Scanner scanner = new Scanner(System.in);
			while(true){
				pw.println(scanner.nextLine());
			}
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			if(socket != null){
				try {
					socket.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}
	public static void main(String[] args)
	{
		Client client = new Client();
		client.start();
	}
}

C-S：