英文:
How to get the text from an XML element in go (structs tags)?
问题
以下是一个具有嵌套字段（title、author等）和文本（Blah Blah...）的元素示例的XML：
<?xml version="1.0" encoding="UTF-8"?>
<book category="cooking">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
Blah Blah Blah Bleh Blah
</book>
我已经编写了用于解码此XML的结构，但我不知道在这种情况下应该使用哪个结构标签。我在文档中搜索了一下，但没有找到相关内容。
type Book struct{
t string xml:"book>title"
p string xml:"book>price"
y string xml:"book>year"
a string xml:"book>author"
blah string ???????
}
英文:
The following XML has an exemple of an element that has nested fields (title, author etc) and a text (Blah Blah...):
<?xml version="1.0" encoding="UTF-8"?>
<book category="cooking">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
Blah Blah Blah Bleh Blah
</book>
I've coded this structure to decode this XML but I don't know which structure tag I should use in this case. I search in the docs but i have found nothing.
type Book struct{
t string `xml:"book>title"`
p string `xml:"book>price"`
y string `xml:"book>year"`
a string `xml:"book>author"`
blah string ???????
}
答案1
得分: 5
根据文档：
> 如果XML元素包含字符数据，则该数据将累积在具有标签",chardata"的第一个结构字段中。结构字段可以是[]byte或string类型。如果没有这样的字段，则字符数据将被丢弃。
因此，您可以使用以下结构体解码它：
type Book struct {
Title string `xml:"title"`
Price string `xml:"price"`
Year string `xml:"year"`
Author string `xml:"author"`
Body string `xml:",chardata"`
}
（请注意，您要解组的字段必须是公开的，即必须以大写字母开头，否则无法解组。）
您可以在这里查看一个示例：https://play.golang.org/p/OlwSqnHsT7
英文:
Per the documentation:
> If the XML element contains character data, that data is
accumulated in the first struct field that has tag ",chardata".
The struct field may have type []byte or string.
If there is no such field, the character data is discarded.
So, you can decode it with a struct as such:
type Book struct {
Title string `xml:"title"`
Price string `xml:"price"`
Year string `xml:"year"`
Author string `xml:"author"`
Body string `xml:",chardata"`
}
(Note that fields you're unmarshaling into must be exported, i.e., must start with an uppercase letter, or they cannot be unmarshaled into.)
You can see an example here: https://play.golang.org/p/OlwSqnHsT7
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