package main

import (
	"encoding/json"
	"fmt"
)

// User 基础数据模型
type User struct {
	ID       int64  `json:"user_id"`
	Username string `json:"username"`
	Age      int    `json:"age"`
}

func main() {
	// 序列化：Go → JSON
	user := User{ID: 1001, Username: "bulma_admin", Age: 26}
	jsonData, err := json.MarshalIndent(user, "", "  ")
	if err != nil {
		fmt.Printf("序列化失败：%v\n", err)
		return
	}
	fmt.Println("=== 序列化结果 ===")
	fmt.Println(string(jsonData))

	// 反序列化：JSON → Go
	jsonStr := `{"user_id":1002,"username":"json_test","age":28}`
	var newUser User
	if err := json.Unmarshal([]byte(jsonStr), &newUser); err != nil {
		fmt.Printf("反序列化失败：%v\n", err)
		return
	}
	fmt.Println("\n=== 反序列化结果 ===")
	fmt.Printf("%+v\n", newUser)
}