golang 使用 viper 读取自定义配置文件

go get github.com/spf13/viper

database:
 driver: mysql
 host: 127.0.0.1
 port: 3306
 username: blog
 dbname: blog
 password: 123456

func InitConfig() {
  path, err := os.Getwd()
  if err != nil {
    panic(err)
  }
  viper.AddConfigPath(path + "/config/dev")
  viper.SetConfigName("config")
  viper.SetConfigType("yaml")
  if err := viper.ReadInConfig(); err != nil {
    panic(err)
  }
}

  username := viper.GetString("database.username")
  password := viper.GetString("database.password")
  host := viper.GetString("database.host")
  port := viper.GetInt("database.port")
  dbname := viper.GetString("database.dbname")
  dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s",username,password,host, port, dbname)
  GormPool, err = gorm.Open("mysql", dsn)