Go XML 解析：结构体字段无法被识别的问题排查与解决

package main

import (
    "encoding/xml"
    "fmt"
    "io/ioutil"
)

type String struct {
    XMLName xml.Name `xml:"STRING"`
    Lang    string   `xml:"lang,attr"`
    Value   string   `xml:"value,attr"`
}

type Entry struct {
    XMLName xml.Name `xml:"ENTRY"`
    Id      string   `xml:"id,attr"`
    Strings []String `xml:"STRING"` // 注意这里，如果XML中有多个STRING，需要使用slice
}

type Dictionary struct {
    XMLName xml.Name `xml:"DICTIONARY"`
    Type    string   `xml:"type,attr"`
    Ignore  string   `xml:"ignore,attr"`
    Entries []Entry  `xml:"ENTRY"` // 注意这里，如果XML中有多个ENTRY，需要使用slice
}

func main() {
    dict := Dictionary{}

    b := []byte(`<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<DICTIONARY type="multilanguage" ignore="en">
  <ENTRY id="ActionText.Description.AI_ConfigureChainer">
    <STRING lang="en" value="ActionText.Description.AI_ConfigureChainer"/>
    <STRING lang="da" value=""/>
    <STRING lang="nl" value=""/>
    <STRING lang="fi" value=""/>
  </ENTRY>
</DICTIONARY>
`)

    err := xml.Unmarshal(b, &dict)
    if err != nil {
        panic(err)
    }

    fmt.Printf("%+v\n", dict)

    dict.Ignore = "test"

    out, err := xml.MarshalIndent(&dict, "  ", "    ")
    if err != nil {
        panic(err)
    }
    fmt.Println(string(out))
}