Go（golang）包含多个文件夹的包(Go (golang) Package consisting of several folders)

No, this is not possible.

If you want to use folders inside your go project you have to use several packages.

NOT VALID

myproject
| -- main.go (package main)
| -- routes.go (package main)
+ -- models
     | -- db.go (package main)
     | -- mymodel.go (package main)

VALID

myproject
| -- main.go (package main)
| -- routes.go (package main)
+ -- models
     | -- db.go (package models)
     | -- mymodel.go (package models)