Go

package main

import (
    "fmt"
    "io/ioutil"
    "net/http"
)

func main() {
    uri := "https://api.zaif.jp/api/1/last_price/btc_jpy"
    req, _ := http.NewRequest("GET", uri, nil)

    client := new(http.Client)
    resp, _ := client.Do(req)
    defer resp.Body.Close()

    byteArray, _ := ioutil.ReadAll(resp.Body)
    fmt.Println(string(byteArray))
}
>>>{"last_price": 130065.0}