用go语言提取{"access_token":"hy.patrol.1.a1b421bb-46fd-4460-bddf-777eaefc68b4","token_type":"bearer","refresh_token":"hy.patrol.1.d669276c-446c-4654-9f12-837a9af1bb33","expires_in":3558,"scope":"all","user_info":{"username":"H02110"}}中的"access_token":"hy.patrol.1.a1b421bb-46fd-4460-bddf-777eaefc68b4"并保持成json

代码实现：

package main

import (
	"encoding/json"
	"fmt"
)

func main() {
	originalJson := `{"access_token":"hy.patrol.1.a1b421bb-46fd-4460-bddf-777eaefc68b4","token_type":"bearer","refresh_token":"hy.patrol.1.d669276c-446c-4654-9f12-837a9af1bb33","expires_in":3558,"scope":"all","user_info":{"username":"H02110"}}`

	var result map[string]interface{}
	err := json.Unmarshal([]byte(originalJson), &result)
	if err != nil {
		fmt.Println("Unmarshal error:", err)
		return
	}

	access_token, ok := result["access_token"]
	if !ok {
		fmt.Println("access_token not found")
		return
	}

	newJson := map[string]interface{}{
		"access_token": access_token,
	}

	newBytes, err := json.Marshal(newJson)
	if err != nil {
		fmt.Println("Marshal error:", err)
		return
	}

	fmt.Println(string(newBytes))
}

输出结果：

{"access_token":"hy.patrol.1.a1b421bb-46fd-4460-bddf-777eaefc68b4"}