Socket编程
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1 /** 2 *客户端 3 */ 4 import java.io.*; 5 import java.net.*; 6 7 public class Client { 8 Socket socket; 9 BufferedReader in; 10 PrintWriter out; 11 12 public Client() { 13 try { 14 socket = new Socket("xxx.xxx.xxx.xxx", 10000); 15 in = new BufferedReader(new InputStreamReader(socket.getInputStream())); 16 out = new PrintWriter(socket.getOutputStream(), true); 17 BufferedReader line = new BufferedReader(new InputStreamReader(System.in)); 18 out.println(line.readLine()); 19 20 line.close(); 21 out.close(); 22 in.close(); 23 socket.close(); 24 } catch (IOException e) { 25 } 26 } 27 28 public static void main(String[] args) { 29 new Client(); 30 } 31 }
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1 /** 2 * 监听一个客户的服务器端 3 */ 4 import java.net.*; 5 import java.io.*; 6 7 public class Server { 8 private ServerSocket ss; 9 private Socket socket; 10 private BufferedReader in; 11 private PrintWriter out; 12 13 public Server() { 14 try { 15 ss = new ServerSocket(10000); 16 while (true) { 17 socket = ss.accept(); 18 in = new BufferedReader(new InputStreamReader(socket.getInputStream())); 19 out = new PrintWriter(socket.getOutputStream(), true); 20 String line = in.readLine(); 21 out.println("you input is :" + line); 22 23 out.close(); 24 in.close(); 25 socket.close(); 26 ss.close(); 27 } 28 } catch (IOException e) { 29 } 30 } 31 32 public static void main(String[] args) { 33 new Server(); 34 } 35 }
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1 /** 2 * 监听多个客户的服务器端 3 * 4 * 主程序监听一端口,等待客户接入;同时构造一个线程类,准备接管会话。 5 * 当一个Socket会话产生后,将这个会话交给线程处理,然后主程序继续监听。 6 */ 7 import java.io.*; 8 import java.net.*; 9 10 public class MultiServer extends ServerSocket { 11 private static final int SERVER_PORT = 10000; 12 13 public MultiServer() throws IOException { 14 super(SERVER_PORT); 15 try { 16 while (true) { 17 Socket socket = accept(); 18 new CreateServerThread(socket); 19 } 20 } catch (IOException e) { 21 } finally { 22 close(); 23 } 24 } 25 26 // --- CreateServerThread 27 class CreateServerThread extends Thread { 28 private Socket client; 29 private BufferedReader in; 30 private PrintWriter out; 31 32 public CreateServerThread(Socket s) throws IOException { 33 client = s; 34 in = new BufferedReader(new InputStreamReader( 35 client.getInputStream(), "GB2312")); 36 out = new PrintWriter(client.getOutputStream(), true); 37 out.println("--- Welcome ---"); 38 start(); 39 } 40 41 public void run() { 42 try { 43 String line = in.readLine(); 44 while (!line.equals("bye")) { 45 String msg = createMessage(line); 46 out.println(msg); 47 line = in.readLine(); 48 } 49 out.println("--- See you, bye! ---"); 50 client.close(); 51 } catch (IOException e) { 52 } 53 } 54 55 private String createMessage(String line) { 56 // xxxxxxxxx; 57 return line; 58 } 59 } 60 61 public static void main(String[] args) throws IOException { 62 new MultiServer(); 63 } 64 }