netty hander 执行顺序

hander 的执行顺序：

client 中pipeline 顺序：

//first,add codec

pipeline.addLast(new BigIntegferdecoder);

pipeline.addlast(new numberEncodeer);

pipeline.addLast(new FactoriesClientHander);

 

//first.codec

pipeline.addlast（new BigIntegerdecoder）；

pipeLine.addLast(new NumberEncoder);

//then,bussiness logic

pipeline.addLast(new FactotersServerHander);