在解组字段的JSON内容时打印struct field标记吗？

package main

import (
    "encoding/json"
    "fmt"
)

type Person struct {
    Name  string `json:"name"`
    Age   int    `json:"age"`
    Email string `json:"email"`
}

func main() {
    jsonData := `{"name":"Alice","age":25,"email":"alice@example.com","address":"123 Main St"}`

    var person Person
    err := json.Unmarshal([]byte(jsonData), &person)
    if err != nil {
        fmt.Println("JSON unmarshal error:", err)
        return
    }

    fmt.Println("Name:", person.Name)
    fmt.Println("Age:", person.Age)
    fmt.Println("Email:", person.Email)
}