public NioClient read(ByteBuffer buffer) {
		try {
			this.channel.read(buffer);
		} catch (IOException e) {
			throw new IORuntimeException(e);
		}
		return this;
	}
public NioClient read ( ByteBuffer buffer ) { try { this . channel . read ( buffer ) ; } catch ( IOException e ) { throw new IORuntimeException ( e ) ; } return this ; }
处理读事件<br>
当收到读取准备就绪的信号后，回调此方法，用户可读取从客户端传世来的消息

@param buffer 服务端数据存储缓存