Jackson TypeIdResolver实现多态序列化和反序列化
https://blog.youkuaiyun.com/lidoudouding/article/details/120767884
https://www.icode9.com/content-1-287429.html
https://www.jianshu.com/p/684794b02d19
java 非常好用的反射框架Reflections介绍
http://www.zzvips.com/article/188695.html
https://blog.youkuaiyun.com/weixin_30342639/article/details/124521467
常量池详解
https://zhuanlan.zhihu.com/p/64839455
触摸java常量池
https://www.cnblogs.com/iyangyuan/p/4631696.html
java中String与new String的区别
https://blog.youkuaiyun.com/dreamzuora/article/details/79464081
Java中符号引用和直接引用
https://zhuanlan.zhihu.com/p/428714540