Swift 元编程，解决json转模型问题 http://www.cocoachina.com/articles/24637 https://www.codercto.com/a/18386.html https://blog.csdn.net/olsQ93038o99S/article/details/79753755 不用元编程，重载解决Json解析问题 https://kemchenj.github.io/2018-07-09/