英文:
Unmarshalling to instantiated empty interface in golang
问题
我正在尝试将其反序列化为一个空的go接口类型的变量。具体类型具有正确的xml标签，但由于某种原因，我无法反序列化xml值。它们只是变为空值。
以下是我想要实现的代码：
type Address struct {
City, State string
}
type Result struct {
XMLName xml.Name `xml:"Person"`
Name string `xml:"FullName" json:"FullName"`
Address interface{}
}
func main() {
xmlAddress := &Address{}
xmlResult := &Result{Name: "none", Address: xmlAddress}
xmlData := `
<Person>
<FullName>Mike McCartney</FullName>
<Address>
<City>Austin</City>
<State>Texas</State>
</Address>
</Person>
`
err := xml.Unmarshal([]byte(xmlData), xmlResult)
// xmlResult = {"XMLName":{"Space":"","Local":"Person"},"FullName":"Mike McCartney","Address":{"City":"Austin","State":"Texas"}}
}
完整代码：https://play.golang.org/p/QXyoOPMFZr
但在我自己的带有实际xml和命名空间的示例中，它不起作用：
type Envelope struct {
XMLName xml.Name `xml:"http://www.w3.org/2003/05/soap-envelope Envelope"`
Body Body `xml:"http://www.w3.org/2003/05/soap-envelope Body"`
}
type Body struct {
XMLName xml.Name `xml:"http://www.w3.org/2003/05/soap-envelope Body"`
Content interface{}
}
type DebtorGetNameResponse struct {
XMLName xml.Name `xml:"http://e-conomic.com Debtor_GetNameResponse"`
DebtorGetNameResult string `xml:"Debtor_GetNameResult"`
}
func main() {
xmlData := `
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
<soap:Body>
<Debtor_GetNameResponse xmlns="http://e-conomic.com">
<Debtor_GetNameResult>THIS SHOULD BE IN THE OUTPUT</Debtor_GetNameResult>
</Debtor_GetNameResponse>
</soap:Body>
</soap:Envelope>`
e := new(Envelope)
res := new(DebtorGetNameResponse)
e.Body = Body{Content: res}
err := xml.Unmarshal([]byte(xmlData), e)
// res = {"XMLName":{"Space":"","Local":""},"DebtorGetNameResult":""}
}
完整代码：https://play.golang.org/p/AsV1LGW1lR
英文:
I am trying to unmarshall into a variable of the empty go interface type. The concrete type has proper xml tags, but for some reason i cannot unmarshall the xml values. They just turn up empty.
This code does what I want to do:
type Address struct {
City, State string
}
type Result struct {
XMLName xml.Name `xml:"Person"`
Name string `xml:"FullName" json:"FullName"`
Address interface{}
}
func main() {
xmlAddress := &Address{}
xmlResult := &Result{Name: "none", Address: xmlAddress}
xmlData := `
<Person>
<FullName>Mike McCartney</FullName>
<Address>
<City>Austin</City>
<State>Texas</State>
</Address>
</Person>
`
err := xml.Unmarshal([]byte(xmlData), xmlResult)
// xmlResult = {"XMLName":{"Space":"","Local":"Person"},"FullName":"Mike McCartney","Address":{"City":"Austin","State":"Texas"}}
}
Full code: https://play.golang.org/p/QXyoOPMFZr
But in my own example with actual xml with namespaces it doesn't work:
type Envelope struct {
XMLName xml.Name `xml:"http://www.w3.org/2003/05/soap-envelope Envelope"`
Body Body `xml:"http://www.w3.org/2003/05/soap-envelope Body"`
}
type Body struct {
XMLName xml.Name `xml:"http://www.w3.org/2003/05/soap-envelope Body"`
Content interface{}
}
type DebtorGetNameResponse struct {
XMLName xml.Name `xml:"http://e-conomic.com Debtor_GetNameResponse"`
DebtorGetNameResult string `xml:"Debtor_GetNameResult"`
}
func main() {
xmlData := `
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
<soap:Body>
<Debtor_GetNameResponse xmlns="http://e-conomic.com">
<Debtor_GetNameResult>THIS SHOULD BE IN THE OUTPUT</Debtor_GetNameResult>
</Debtor_GetNameResponse>
</soap:Body>
</soap:Envelope>`
e := new(Envelope)
res := new(DebtorGetNameResponse)
e.Body = Body{Content: res}
err := xml.Unmarshal([]byte(xmlData), e)
// res = {"XMLName":{"Space":"","Local":""},"DebtorGetNameResult":""}
}
Full code: https://play.golang.org/p/AsV1LGW1lR
答案1
得分: 1
你需要将xml标签添加到你的interface{}中，例如：
Content interface{} `xml:"http://e-conomic.com Debtor_GetNameResponse"`
在你的另一个示例中，Address interface{}可以工作，因为它的名称与xml标签<Address></Address>相同，并且Unmarshal通过名称进行查找。
英文:
You need to add the xml tags to your interface{}, ie.
Content interface{} `xml:"http://e-conomic.com Debtor_GetNameResponse"`
Address interface{} in your other example works because its name is the same of the xml tag <Address></Address> and Unmarshal lookups by it.
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