arrays - 在 go 中解析简单值的 xml 数组

Question

我有一个如下所示的 xml:

<MyElement>
    <Ids>
        <int>1</int>
        <int>2</int>
    </Ids>
</MyElement>

我发现在 go 中进行解析具有挑战性。我试过以下方法

type MyElement struct {
  Ids int[] 
}

甚至

type Ids struct {
  id int[] `xml:"int"`
}

type MyElement struct {
  Ids Ids
}

但它永远不会被拾取。

困难在于元素都被称为 int 并且只存储一个 int 值，而不是通常的键/值对。

Answer 1

您需要指定 int 元素的路径:

type MyElement struct {
    Ids []int `xml:"Ids>int"`
}

https://play.golang.org/p/HfyQzOiSqa

您也可以这样做以避免重复“Ids”

type MyElement struct {
    Ids []int `xml:">int"`
}

xml.Unmarshal's documentation 中提到了此功能:

• If the XML element contains a sub-element whose name matches the prefix of a tag formatted as "a" or "a>b>c", unmarshal will descend into the XML structure looking for elements with the given names, and will map the innermost elements to that struct field. A tag starting with ">" is equivalent to one starting with the field name followed by ">".