UserDecoder.java

package com.lyncc.netty.codec.jackson;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufInputStream;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;

import java.util.List;

public class UserDecoder<T> extends ByteToMessageDecoder {
    
    private final Class<T> clazz;
    
    
    public UserDecoder(Class<T> clazz) {
        this.clazz = clazz;
    }

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
        ByteBufInputStream byteBufInputStream = new ByteBufInputStream(in);
        out.add(UserMapper.getInstance().readValue(byteBufInputStream, clazz));
    }

}