服务器端用了Mina 是不是客户端也要用Mina才能通讯？

[goblin_god]

服务器端代码

private static Logger log = Logger.getLogger(ServerMain.class.getName());
	
	private static final int PORT = 11104;

	public static void main(String[] args){
		
		IoAcceptor acceptor;
		try{
			acceptor = new NioSocketAcceptor();
			
			DefaultIoFilterChainBuilder builder = acceptor.getFilterChain();
			
			 //过滤器的位置很重要，在这里因为放到了第一个位置，它会记录原始字节码数据  
	        LoggingFilter lf = new LoggingFilter();   
	        builder.addLast("logger", lf); 
			
			//设置解码器
			builder.addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(
					Charset.forName("GBK"))));
			
			//进行配置信息的设置  
	        acceptor.getSessionConfig().setReadBufferSize(10);
			
			//session配置
			IoSessionConfig sessionConfig = acceptor.getSessionConfig();
			//sessionConfig.setMaxReadBufferSize(1024*100);
			//读写通道10秒后无操作进入空闲状态
			sessionConfig.setIdleTime(IdleStatus.BOTH_IDLE, 10);
			
			//设置处理器 
			acceptor.setHandler(new ServerHandler());
			
			//绑定本地端口
			acceptor.bind(new InetSocketAddress(PORT));
		}catch(Exception e){
			e.printStackTrace();
		}
		
		log.info("main thread exit!");
	}

public class ServerHandler extends IoHandlerAdapter {
	
	private final Logger log = Logger.getLogger(ServerHandler.class.getName());

	@Override
	public void sessionCreated(IoSession session) throws Exception {
		log.log(Level.INFO, "........................session created");
		super.sessionCreated(session);
	}

	@Override
	public void sessionOpened(IoSession session) throws Exception {
		log.log(Level.INFO, "........................session opened");
		session.write("12345");
		super.sessionOpened(session);
	}

	@Override
	public void sessionClosed(IoSession session) throws Exception {
		log.log(Level.INFO, "........................session closed");
		super.sessionClosed(session);
	}

	@Override
	public void sessionIdle(IoSession session, IdleStatus status)
			throws Exception {
		log.log(Level.INFO, "........................session idle");
		super.sessionIdle(session, status);
	}

	@Override
	public void exceptionCaught(IoSession session, Throwable cause)
			throws Exception {
		log.log(Level.INFO, "........................session exception");
		log.log(Level.WARNING,cause.getMessage());
		super.exceptionCaught(session, cause);
	}

	@Override
	public void messageReceived(IoSession session, Object message)
			throws Exception {
		log.log(Level.INFO, "........................message received");
		log.log(Level.INFO, message.toString());
		super.messageReceived(session, message);
	}

	@Override
	public void messageSent(IoSession session, Object message) throws Exception {
		log.log(Level.INFO, "........................message sent");
		super.messageSent(session, message);
	}

	
	
}

客户端代码

	public static void main(String[] args) {

		try {
			Socket socket = new Socket("localhost",11104);
			
			OutputStream os = socket.getOutputStream();
			
			os.write("abcdef".getBytes());
			os.flush();
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
		
		while(true){
			
		}

	}

日志：

2011-9-28 17:42:03 ServerMain main
信息: main thread exit!
log4j:WARN No appenders could be found for logger (org.apache.mina.filter.logging.LoggingFilter).
log4j:WARN Please initialize the log4j system properly.
2011-9-28 17:42:09 ServerHandler sessionCreated
信息: ........................session created
2011-9-28 17:42:09 ServerHandler sessionOpened
信息: ........................session opened
2011-9-28 17:42:09 ServerHandler messageSent
信息: ........................message sent


从日志上可以看出
客户端是连上了的，但是往服务器端发数据部成功，服务器往客户端发数据是可以的。例子很简单但却找不到问题出在哪里。
麻烦大家帮忙看看。