MyByteToLoneDecoder2

package com.atguigu.netty.inboundhandlerandoutboundhandler;

import com.atguigu.netty.simple.NettyClientHandler;

import java.util.List;

public class MyByteToLoneDecoder2 extends  ReplayingDecoder<Void>{
    protected <CHannelHandlerContext> void decode
            (CHannelHandlerContext ctx, NettyClientHandler.
                    ByteBuf in, List<Object> out)throws Exception{
        System.out.println("MyByteToLongDecoder 被调用");
        //因为 long 8个字节，需要判断有8个字节，才能读取一个long
        if(in.readableBytes()>=8)
            out.add(in.readLong());




    }
}