英文:
Golang marshal dynamic xml element name
问题
XML文件由两个元素组成。这些元素具有相同的结构，除了一个元素名称不同。我尝试设置XMLName属性的值，但没有成功。
XML:
<!-- 第一个元素 -->
<PERSON>
<ELEM1>...</ELEM1>
<ELEM2>...</ELEM2>
<ELEM3>...</ELEM3>
<ELEM4>...</ELEM4>
</PERSON>
<!-- 第二个元素 -->
<SENDER>
<ELEM1>...</ELEM1>
<ELEM2>...</ELEM2>
<ELEM3>...</ELEM3>
<ELEM4>...</ELEM4>
</SENDER>
是否可以定义一个结构体，使元素名称是动态的？
type Person struct {
XMLName string `xml:"???"` // 如何使其动态？
e1 string `xml:"ELEM1"`
e2 string `xml:"ELEM2"`
e3 string `xml:"ELEM3"`
e4 string `xml:"ELEM4"`
}
英文:
The xml file consists of two elements. Those elements have the same structure except for one element name. I tried to set a value to the XMLName property, but that didn't work.
Xml:
<!-- first element -->
<PERSON>
<ELEM1>...</ELEM1>
<ELEM2>...</ELEM2>
<ELEM3>...</ELEM3>
<ELEM4>...</ELEM4>
</PERSON>
<!-- second element -->
<SENDER>
<ELEM1>...</ELEM1>
<ELEM2>...</ELEM2>
<ELEM3>...</ELEM3>
<ELEM4>...</ELEM4>
</SENDER>
Is it possible to define a struct such that the element name is dynamic?
type Person struct {
XMLName string `xml:"???"` // How make this dynamic?
e1 string `xml:"ELEM1"`
e2 string `xml:"ELEM2"`
e3 string `xml:"ELEM3"`
e4 string `xml:"ELEM4"`
}
答案1
得分: 10
在文档中，它说XMLName字段必须是xml.Name类型。
type Person struct {
XMLName xml.Name
E1 string `xml:"ELEM1"`
// ...
}
通过xml.Name的Local字段设置元素名称：
person := Person {
XMLName: xml.Name { Local: "Person" },
// ...
}
（另外，为了将其包含在XML输出中，E1 - E4必须是可导出的）。
Playground示例：http://play.golang.org/p/bzSutFF9Bo
英文:
In the documentation, it says that the XMLName field must be of type xml.Name.
type Person struct {
XMLName xml.Name
E1 string `xml:"ELEM1"`
// ...
}
Set the element name via the Local field of xml.Name:
person := Person {
XMLName: xml.Name { Local: "Person" },
// ...
}
(Also, E1 - E4 must be exported in order to be included in the XML output).
Playground example: http://play.golang.org/p/bzSutFF9Bo
答案2
得分: 3
我找到了一个更简洁的解决方案，你只需要像这样为XMLName字段设置结构标签：
type Person struct {
XMLName xml.Name `xml:"Person"`
E1 string `xml:"ELEM1"`
// ...
}
英文:
I found a lighter solution for this case where you only need to set the struct tag for XMLName field like this:
type Person struct {
XMLName xml.Name `xml:"Person"`
E1 string `xml:"ELEM1"`
// ...
}
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