如何在Go中为元素添加XML属性？

type Person struct {
    XMLName xml.Name `xml:"person"`
    Name    string   `xml:"name,attr"`
    Age     int      `xml:"age,attr"`
}

p := Person{Name: "Alice", Age: 25}
xmlData, err := xml.Marshal(p)
if err != nil {
    fmt.Println("XML encoding error:", err)
    return
}

file, err := os.Create("person.xml")
if err != nil {
    fmt.Println("File creation error:", err)
    return
}
defer file.Close()

file.Write(xmlData)

<person name="Alice" age="25"></person>