说明：  go golang web编程基本框架封装,主要包括路由,中间件,日志,错误统一处理(中间件一部分),代码由以前学习go语言文章改造,整理而来,希望对大家学习go语言有用,
(The basic framework of go golang web programming is encapsulated, mainly including routing, middleware, logs, and unified error handling (part of middleware). The code is transformed and sorted from the previous articles on learning go language. I hope it is useful for everyone to learn go language,)