数据传输模板-java源代码

package server2; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.net.*; import java.util.concurrent.*; public class MultiThreadServer { private int port = 8821; private ServerSocket serverSocket; private ExecutorService executorService;// 线程池 private final int POOL_SIZE = 10;// 单个CPU线程池大小 public MultiThreadServer() throws IOException { serverSocket = new ServerSocket(port); // Runtime的availableProcessor()方法返回当前系统的CPU数目. executorService = Executors.newFixedThreadPool(Runtime.getRuntime() .availableProcessors() * POOL_SIZE); System.out.println("服务器启动"); } public void service() { while (true) { Socket socket = null; try { // 接收客户连接,只要客户进行了连接,就会触发accept();从而建立连接 socket = serverSocket.accept(); executorService.execute(new Handler(socket)); } catch (Exception e) { e.printStackTrace(); } } } public static void main(String[] args) throws IOException { new MultiThreadServer().service(); } } class Handler implements Runnable { private Socket socket; public Handler(Socket socket) { this.socket = socket; } private PrintWriter getWriter(Socket socket) throws IOException { OutputStream socketOut = socket.getOutputStream(); return new PrintWriter(socketOut, true); } private BufferedReader getReader(Socket socket) throws IOException { InputStream socketIn = socket.getInputStream(); return new BufferedReader(new InputStreamReader(socketIn)); } public String echo(String msg) { return "echo:" + msg; } public void run() { try { System.out.println("New connection accepted " + socket.getInetAddress() + ":" + socket.getPort()); BufferedReader br = getReader(socket); PrintWriter pw = getWriter(socket); String msg = null; while ((msg = br.readLine()) != null) { System.out.println(msg); pw.println(echo(msg)); if (msg.equals("bye")) break; } } catch (IOException e) { e.printStackTrace(); } finally { try { if (socket != null) socket.close(); } catch (IOException e) { e.printStackTrace(); } } } }