很多人都觉得写业务代码很枯燥，没有什么技术含量，大部分就是if-else逻辑的叠加。写业务代码确实没有写中间件来的高大上，但是我觉得不管是写什么代码，想要写出好的代码都不是一件容易的事情。这不，最近我们生产系统的版本迭代过程中一个需求就让我思考了很多，并且在实现方式上做得更加的优雅。

   场景如下：我们在生产系统中需要维护各个游戏的状态，当需要上线一个游戏时，需要对该游戏的各方面的信息做一遍检查，当检查所有的字段都达到要求之后，再切换该游戏的状态为已上线。首先，针对安卓游戏，我们需要检查该游戏的资质审核状态，运营包地址和渠道包地址是否分发完成，基本信息中的必填字段是否非空，是否接入公司的sdk，若接入sdk，则还需要检查该游戏的支付信息中的必填字段是否已经完成等等，针对ios游戏，h5游戏以及网页游戏，我们需要检查的字段各不相同。

   首先看到这个需求，给人的第一感觉是很繁琐，每个游戏的字段很多，由于在后台使用了mbg，游戏的支付信息，安装包信息和基本信息等字段并不在同一个bean中，并且我们还要区分游戏的类型，不同的游戏要检查的字段也不尽相同，最后，关于游戏的基本信息，支付信息等信息的必填字段还在不断的增加，这一部分的业务的变化也较为频繁。若后续的必填字段有调整或者新增，那这里的代码也要做改动。

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