decode_json_map_interface.go

package main

import (
	"encoding/json"
	"fmt"
)

type mydata struct {
	First    string              `json:first`
	Second   float32             `json:second`
	Third    map[string]string   `json:third`
}

func main() {
	b := []byte(`{
	   "k1" : "v1", 
	   "k3" : 10,
	   "result":{"first": "v4","second": 12.3,"third": {"k11" : "v11", "k22" : "v22"}}
	}`)

	var objmap map[string]*json.RawMessage
	err := json.Unmarshal(b, &objmap)
	if err != nil {
		fmt.Println(err)
	}
	fmt.Println(objmap)
	
	var dat mydata
	err = json.Unmarshal(*objmap["result"], &dat)
	if err != nil {
		fmt.Println(err)
	}
	fmt.Println(dat)
	fmt.Println(dat.Third["k22"])
}