在golang中将Json转换为字符串

Question

What I am trying to do is to convert the JSON response I got from a third party API to string to be able to render it on the webpage. My attempt first was to create a struct called money which holds the 3 values which are being returned and then Unmarshel the bytes but I don't get anything displayed

Here is the struct

type money struct {
Base     string  `json:"base"`
Currency string  `json:"currency"`
Amount   float32 `json:"amount"`}

and inside the getCurrency() func

    response, err := http.Get("https://api.coinbase.com/v2/prices/spot?currency=USD")

if err != nil {
    fmt.Printf("The http requst failed with error %s 
", err)
} else {
    answer, _ := ioutil.ReadAll(response.Body)
    response := money{}
    json.Unmarshal([]byte(answer), &response)
    fmt.Fprintln(w, response)
    fmt.Fprintln(w, response.Currency)


}

Finally here is what i get from the json response

 {"data":{"base":"BTC","currency":"USD","amount":"4225.87"}}

Answer 1

I had to remove the double quotes from the 'amount' value in order to allow the parsing into float32:

 {"data":{"base":"BTC","currency":"USD","amount":4225.87}}

See on Playground: https://play.golang.org/p/4QVclgjrtyi

Full code:

package main

import (
    "encoding/json"
    "fmt"
)

type money struct {
    Base     string  `json:"base"`
    Currency string  `json:"currency"`
    Amount   float32 `json:"amount"`
}

type info struct {
    Data money
}

func main() {
    str := `{"data":{"base":"BTC","currency":"USD","amount":4225.87}}`

    var i info

    if err := json.Unmarshal([]byte(str), &i); err != nil {
        fmt.Println("ugh: ", err)
    }

    fmt.Println("info: ", i)
    fmt.Println("currency: ", i.Data.Currency)
}