// 当前程序的包名

package main

// 导入其它的包

import (

    "encoding/json"

    "fmt"

)

func main() {

    map2json2map()

}

func map2json2map() {

    map1 := make(map[string]interface{})

    map1["1"] = "hello"

    map1["2"] = "world"

    //return []byte

    str, err := json.Marshal(map1)

    if err != nil {

        fmt.Println(err)

    }

    fmt.Println("map to json", string(str))

    //json([]byte) to map

    map2 := make(map[string]interface{})

    err = json.Unmarshal(str, &map2)

    if err != nil {

        fmt.Println(err)

    }

    fmt.Println("json to map ", map2)

    fmt.Println("The value of key1 is", map2["1"])

}