java socket 多线程处理

public class MallShopSoketServer implements Runnable {

	private static Logger logger = Logger.getLogger(MallShopSoketServer.class);

	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 MallShopSoketServer() {
		try {
			serverSocket = new ServerSocket(port);
		} catch (Exception e) {

			logger.error(e);
		}
		executorService = Executors.newFixedThreadPool(POOL_SIZE);
		logger.info("商城Sokect Server 启动,端口:" + port);
	}

	
	
	public void run() {
		try {
			while (true) {
				Socket socket = null;
				// 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 MallShopHandler(socket));
			}
		} catch (Exception e) {
			logger.error(e);
		}
	}

}

/**
 * 商城信息处理器
 * 
 * @author panxiuyan
 * 
 */
public class MallShopHandler implements Runnable {

	private Logger logger = Logger.getLogger(MallShopHandler.class);

	private Socket socket;

	public MallShopHandler(Socket socket) {
		this.socket = socket;
	}

	/**
	 * 获取Socket 输入流
	 * 
	 * @param socket
	 * @return
	 * @throws IOException
	 */
	private PrintWriter getWriter(Socket socket) throws IOException {
		OutputStream socketOut = socket.getOutputStream();
		return new PrintWriter(socketOut, true);
	}

	/**
	 * 获取socket 输出流
	 * 
	 * @param socket
	 * @return
	 * @throws IOException
	 */
	private BufferedReader getReader(Socket socket) throws IOException {
		InputStream socketIn = socket.getInputStream();
		return new BufferedReader(new InputStreamReader(socketIn));
	}

	public void run() {
		try {
			logger.info("New connection accepted " + socket.getInetAddress()
					+ ":" + socket.getPort());
			BufferedReader br = getReader(socket);
			PrintWriter pw = getWriter(socket);
			String msg = br.readLine();
			pw.println(doMsg(msg));
		} catch (IOException e) {
			logger.error(e);
		} finally {
			try {
				if (socket != null)
					socket.close();
			} catch (IOException e) {
				logger.error(e);
			}
		}
	}

	/**
	 * 处理信息
	 * 
	 * @param msg
	 * @return
	 */
	public String doMsg(String msg) {
		.................

	}

}