server.channelInitializer(new ChannelInitializer() {
            public void initChannel(AioChannel channel) throws Exception {
                //获取责任链对象
                defaultChannelPipeline.addLast(new DelimiterFrameDecoder(DelimiterFrameDecoder.lineDelimiter));
                defaultChannelPipeline.addLast(new StringDecoder());
                //添加自定义的简单消息处理器
                defaultChannelPipeline.addLast(new SimpleHandler());