how to use Unmarshal get ”include“ and ”hobbies“？

[dancheng9999]

yaml

AppName: "viper"
spring:
  profiles:
    include: "test"
hobbies:
- skateboarding
- snowboarding
- go

code go 1.17

package main

import (
	"fmt"

	"github.com/fsnotify/fsnotify"
	"github.com/spf13/viper"
)

type config struct {
	AppName string
	spring  struct {
		profiles struct {
			include string
		}
	}
}

func main() {
	viper.SetConfigName("app")  
	viper.SetConfigType("yaml") 
	viper.AddConfigPath("./app/project/viper/config") 
	err := viper.ReadInConfig()                     
	if err != nil {
		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
		         // Config file not found; ignore error if desired
	        } else {
		        // Config file was found but another error was produced
	        }
	}

var C config
err1 := viper.Unmarshal(&C)
if err1 != nil {
fmt.Printf("unable to decode into struct, %v", err1)
}

//here ,i get AppName from yaml
fmt.Println("AppName is: " + C.AppName)

//here ,spring.profiles.include is nil  how to get it with Unmarshal?
//how to get hobbies from yaml  with Unmarshal?
fmt.Println("include is: " + C.spring.profiles.include) //？nil

[sagikazarmark]

I'm not 100% sure what your question is.

Can you please create an example using this repl to demonstrate the problem?