英文:
Problems decoding XML in go
问题
我有一个关于在Go中解析XML的问题。
我一直在尝试解析这段XML：
<?xml version="1.0" encoding="UTF-8"?>
<response>
<folders>
<folder id="78" name="Test 1" />
<folder id="95" name="Test 2" />
<folder id="96" name="Test 3" />
</folders>
</response>
这是我的结构体：
type XmlResponse struct {
Folders []Folder `xml:"folders>folder"`
}
type Folder struct {
XMLName xml.Name `xml:"folder"`
Id int `xml:"id,attr"`
Name string `xml:"name,attr"`
}
由于某种原因，Go不会将每个文件夹解析为文件夹数组，如结构体中定义的那样。相反，我得到了以下消息：
"expected element type <folder> but have <folders>"
正如你所看到的，我已经将xml:"folders"添加到文件夹列表中，但它仍然无法正确识别。我尝试将XMLName属性放在不同的位置，但要么出现上述错误，要么只得到一个空的XmlResponse结构体。我还尝试创建一个包含文件夹数组的Folders结构体，结果相同。我是否在XML解码方面有什么概念上的错误？名称可能太接近了吗？
我在Go Playground上制作了一个示例，展示了这个问题：http://play.golang.org/p/XRCGVNzO_O
非常感谢。
英文:
I have a question regarding unmarshalling of XML in Go.
I have been trying to unmarshal this piece of XML
<?xml version="1.0" encoding="UTF-8"?>
<response>
<folders>
<folder id="78" name="Test 1" />
<folder id="95" name="Test 2" />
<folder id="96" name="Test 3" />
</folders>
</response>
These are my structs
type XmlResponse struct {
Folders []Folder `xml:"folders"`
}
type Folder struct {
XMLName xml.Name `xml:"folder"`
Id int `xml:"id,attr"`
Name string `xml:"name, attr"`
}
For some reason, Go won't unmarshal each folder into an array of folders, as defined in the struct. Instead i get the message
"expected element type <folder> but have <folders>"
As you can see, i have added xml:"folders" to the list of folders, but it still won't recognize it correctly. I have tried to place the XMLName attributes in different places but i either end up with the above error, or just an empty XmlResponse struct. I have also tried to make a Folders struct containing an array of Folders, with the same result. Am i conceptually missing something regarding XML decoding? Are the names maybe a little too close to eachother?
I have made an example on Go playground that shows the issue: http://play.golang.org/p/XRCGVNzO_O
Thank you very much.
答案1
得分: 3
你需要将xml:"folders"的元数据更改为xml:"folders>folder"，以匹配folders元素内的folder元素。
请参考这个修改后的playground示例。
英文:
You need to change the xml:"folders" meta to xml:"folders>folder" to match the folder elements inside the folders element.
See this modified playground example.
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