Logging 中间件由 clevergo/middleware 提供。

import (
    "github.com/clevergo/clevergo"
    "github.com/clevergo/middleware"
)

m := middleware.Logging(os.Stdout)
// m := middleware.CombinedLogging(os.Stdout) // combined logging
router.Use(clevergo.WrapHH(m))