类似手机QQ的软件，和QQ界面基本一样。 供新手学习，基于NIO完成。 服务端的源码丢失，只有初步的源码，大家勉强看下。客服端全部都在。-Similar mobile QQ software, and QQ interface is basically the same. For novices to learn, based NIO completed. Server source code is lost, only an initial source, we barely