UserEncoder.java

package com.lyncc.netty.codec.jackson;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

public class UserEncoder extends MessageToByteEncoder<Object>{

    @Override
    protected void encode(ChannelHandlerContext ctx, Object msg, ByteBuf out) throws Exception {
        ByteBufOutputStream byteBufOutputStream = new ByteBufOutputStream(out);
        UserMapper.getInstance().writeValue(byteBufOutputStream, msg);
    }

}