netty是一个NIO的网络编程框架，给java开发者提供了一种新的网络编程思想，有利于快速实现服务器客户端的开发，开发者几乎可以通过netty定制自己的通信协议。-Netty is a NIO network programming fr a mework, to Java developers to provide a kind of new network programming ideas, facilitates rapid implementation of client serve