go - 如何使用 viper 加载 map 列表？

Question

我有以下配置要用 viper 加载:

artist:
  name: The Beatles
  albums:
  - name: The White Album
    year: 1968
  - name: Abbey Road
    year: 1969

我不知道如何加载 map 列表。我想我只需要解码这个 key ，但这段代码不起作用:

type Album struct {
    Name string
    Year int
}

type Artist struct {
    Name string
    Albums []Album
}

var artist Artist
viper.UnmarshalKey("artists", &artist)

我错过了什么？

Answer 1

你确定 yaml 中的键是 artists 吗？您的意思是提供 artist 吗？

工作示例:

str := []byte(`artist:
  name: The Beatles
  albums:
  - name: The White Album
    year: 1968
  - name: Abbey Road
    year: 1969
`)

    viper.SetConfigType("yaml")
    viper.ReadConfig(bytes.NewBuffer(str))

    var artist Artist
    err := viper.UnmarshalKey("artist", &artist)

    fmt.Printf("%v, %#v\n", err, artist)

输出:

<nil>, main.Artist{Name:"The Beatles", Albums:[]main.Album{main.Album{Name:"The White Album", Year:1968}, main.Album{Name:"Abbey Road", Year:1969}}}