Replacing JSON Key by Golang

This sample is for replacing JSON key by golang.

package main

import (
    "encoding/json"
    "fmt"
)

func main() {
    json1 := `{"key1": "value1"}`

    obj := map[string]interface{}{}
    json.Unmarshal([]byte(json1), &obj)

    fmt.Println(obj) // <-- map[key1:value1]

    obj["key2"] = obj["key1"]
    delete(obj, "key1")

    fmt.Println(obj) // <-- map[key2:value1]
}