Golang: Convert JSON string/objects to list of structure

convert_json_to_strct_list.go

// Go Playground: https://play.golang.org/p/cMutpCzpmth

package main

import (
	"fmt"
	 "encoding/json"
)

// Field is a key value structure
type Field struct {
	name string
	value string
}
	
func main() {
	fields := []Field{}
	jsonStr := `[
		{"a": "alles klar", "b": "c", "d": "1"}, 
		{"key": "value"}
	]`
	data := []map[string]interface{}{}
	
	// Convert json string to list of map[string]interface{}
	err := json.Unmarshal([]byte(jsonStr), &data)
	if err != nil {
		panic(err)
	}
	
	for _, v := range data {
		// Keys contains available keys in current map
		keys := make([]string, 0, len(v))
		
		// Copy keys
		for k := range v {
			keys = append(keys, k)
		}
		
		for _, key := range keys {
			field := Field {
				name: key, 
				value: fmt.Sprintf("%s", v[key].(string)),
			}
				
			fields = append(fields, field)
		}
	}
	
	for _, f := range fields {
		fmt.Printf("%#v\n", f)
	}

}