如何在Go中将带有嵌入结构字段的结构编组为平面JSON对象？

type Address struct {
    City  string `json:"city"`
    State string `json:"state"`
}

type Person struct {
    Name    string  `json:"name"`
    Age     int     `json:"age"`
    Address `json:"-"`
}

package main

import (
    "encoding/json"
    "fmt"
)

type FlatPerson struct {
    Name    string `json:"name"`
    Age     int    `json:"age"`
    City    string `json:"city"`
    State   string `json:"state"`
}

func (p Person) MarshalJSON() ([]byte, error) {
    flat := FlatPerson{
        Name:  p.Name,
        Age:   p.Age,
        City:  p.Address.City,
        State: p.Address.State,
    }
    return json.Marshal(flat)
}

func main() {
    person := Person{
        Name: "John Doe",
        Age:  30,
        Address: Address{
            City:  "New York",
            State: "NY",
        },
    }

    jsonData, err := json.Marshal(person)
    if err != nil {
        fmt.Println("Error marshaling JSON:", err)
        return
    }
    fmt.Println(string(jsonData))
}

{"name":"John Doe","age":30,"city":"New York","state":"NY"}