Viper Configuration Example

config.json

{
    "msg": "Hello World"
}

main.go

package main

import (
	"fmt"

	"github.com/spf13/viper"
)

func main() {
	viper.SetConfigName("config")
	//viper.AddConfigPath("/Users/chadlung/GoProjects/src/github.com/chadlung/viper-example")
	err := viper.ReadInConfig()

	if err != nil {
		fmt.Println("No configuration file loaded - using defaults")
	}

	// If no config is found, use the default(s)
	viper.SetDefault("msg", "Hello World (default)")

	theMessage := viper.GetString("msg")
	fmt.Printf("\n%s\n\n", theMessage)
}