MsgPackServerHandler

@ChannelHandler.Sharable
public class MsgPackServerHandler extends ChannelInboundHandlerAdapter {
    private AtomicInteger counter = new AtomicInteger(0);
    /*** 服务端读取到网络数据后的处理*/
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        //将上一个handler生成的数据强制转型
        User user = (User)msg;
        System.out.println("Server Accept["+user
                +"] and the counter is:"+counter.incrementAndGet());
        //服务器的应答
        String resp = "I process user :"+user.getUserName()
                + System.getProperty("line.separator");
        ctx.writeAndFlush(Unpooled.copiedBuffer(resp.getBytes()));
        ctx.fireChannelRead(user);
    }
    /*** 发生异常后的处理*/
    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}