Marshall在Go中映射到XML [英] Marshall map to XML in Go
本文介绍了Marshall在Go中映射到XML的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我尝试将地图输出为XML数据,但是我收到以下错误:
I'm trying to output a map as XML data, however I receive the following error:
xml: unsupported type: map[string]int
编组映射对于JSON工作正常,所以我不明白为什么它不会对XML来说工作是一样的。使用Struct真的是唯一的方法吗?
Marshalling maps works fine for JSON so I don't get why it wouldn't work the same for XML. Is using a Struct really the only way?
推荐答案
我最终通过使用xml.Marshaler解决了 Dave C
I ended up solving this by using the xml.Marshaler as suggested by Dave C
// StringMap is a map[string]string.
type StringMap map[string]string
// StringMap marshals into XML.
func (s StringMap) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
tokens := []xml.Token{start}
for key, value := range s {
t := xml.StartElement{Name: xml.Name{"", key}}
tokens = append(tokens, t, xml.CharData(value), xml.EndElement{t.Name})
}
tokens = append(tokens, xml.EndElement{start.Name})
for _, t := range tokens {
err := e.EncodeToken(t)
if err != nil {
return err
}
}
// flush to ensure tokens are written
err := e.Flush()
if err != nil {
return err
}
return nil
}
来源: https://gist.github.com/jackspirou/4477e37d1f1c043806e
现在可以通过简单地调用
Now the map can be marshalled by simply calling
output, err := xml.MarshalIndent(data, "", " ")
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