参考资料
SpringBoot中使用RMI进行远程方法调用
https://www.cnblogs.com/shamo89/p/10631320.html
https://blog.youkuaiyun.com/qq_30434271/article/details/109508451
手写实现简单的微服务之RMI框架
https://blog.youkuaiyun.com/weixin_45500506/article/details/113511137
https://blog.youkuaiyun.com/qq_36371162/article/details/107604631