go get请求 json字符串转为结构体

package main

import (
	"io/ioutil"
	"fmt"
	"net/http"
	"encoding/json"
)
type Eth struct {
	Status int
	Data Ticker
}
type Ticker struct {
	Ticker []float64
	Seq int
}
func main() {
	httpGet()
}
func httpGet() {
	resp, err := http.Get("https://api.fcoin.com/v2/market/ticker/ethusdt")
	if err != nil {
		// handle error
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}

	fmt.Println(string(body))
	var s Eth
	json.Unmarshal([]byte(string(body)), &s)
	fmt.Println(s.Data.Ticker)
}