使用Socket編寫了一個服務端和客戶端通訊的例子，下面帖代碼，本文使用了java7的部分特性,因此需要jdk至少7以上。

客戶端：

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.Socket; import java.net.UnknownHostException;public final class Client {final static int PORT = 8088;final static String ADDRESS = "127.0.0.1";public static void main(String[] args) {try (Socket socket = new Socket(ADDRESS, PORT);BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));PrintWriter out = new PrintWriter(socket.getOutputStream(), true);) {while(true) {//循環發送消息// 向服務器端發送數據out.println("今天天氣怎么樣？");String response = in.readLine();System.out.println("from server:"+response);out.println("我想知道我在服務器的積分是多少?");Thread.sleep(2000);}} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

服務器端:

import java.io.IOException; import java.net.ServerSocket; import java.net.Socket;public class Server {final static int PORT = 8088;public static void main(String[] args) {ServerSocket server = null;try {server = new ServerSocket(PORT);System.out.println("Server is start....");while (true) {//通過循環使服務器可持續接收請求// 進行阻塞,這里阻塞的是循環，但是當有請求傳入時會放行一次Socket socket = server.accept();new Thread(new ServerHandler(socket)).start();}} catch (IOException e) {e.printStackTrace();}} }

ServerHandler類

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintStream; import java.net.Socket;public class ServerHandler implements Runnable {private Socket socket;public ServerHandler(Socket socket) {this.socket = socket;}@Overridepublic void run() {try(BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));PrintStream out = new PrintStream(socket.getOutputStream(), true);){String body = null;while (true) {body = in.readLine();if (body == null)break;System.out.println("from Client:" + body);out.println("我是服務器返回的數據");}} catch (IOException e) {e.printStackTrace();}}}

總結

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