src/test_interface.git/main.go

packagemain

import(
task"test_interface.git/task"
)

funcmain(){
do:=task.NewInter(task.NewTask())
do.OnInit()
}

src/test_interface.git/task/print.go

packagetask

import(
"fmt"
)

typeStvestruct{
}

funcNewTask()Inter{
return&Stve{}
}

func(self*Stve)OnInit(){
fmt.Println("Hellowrold")
}

src/test_interface.git/task/interface.go

packagetask

import()

typeInterinterface{
OnInit()
}

typeAppstruct{
appInter
}

funcNewInter(tmpInter)*App{
app1:=new(App)
app1.app=tmp
returnapp1
}

func(self*App)OnInit(){
self.app.OnInit()
}

编译

go run main.go

执行结果：

Hellowrold