MsgPackEncode

/*基于MessagePack的编码器，序列化*/
public class MsgPackEncode extends MessageToByteEncoder<User> {
    @Override
    protected void encode(ChannelHandlerContext ctx, User msg, ByteBuf out)
            throws Exception {
        MessagePack messagePack = new MessagePack();
        byte[] raw = messagePack.write(msg);
        out.writeBytes(raw);
    }
}