get http.Response into struct using json.Unmarshal - go

Question

I'm calling a remote API and getting a JSON response back. I'm trying to convert the *http.Response into a struct that I defined. Everything i've tried so far has resulted in an empty struct. Here is my attempt with json.Unmarshal
type Summary struct {
Created string `json:"created"`
High float64 `json:"high"`
Low float64 `json:"low"`
}
func getSummary() {
url := "http://myurl"
resp, err := http.Get(url)
if err != nil {
log.Fatalln(err)
}
body, err2 := ioutil.ReadAll(resp.Body)
if err2 != nil {
panic(err.Error())
}
log.Printf("body = %v", string(body))
//outputs: {"success":true,"message":"","result":["High":0.43600000,"Low":0.43003737],"Created":"2017-06-25T03:06:46.83"}]}
var summary = new(Summary)
err3 := json.Unmarshal(body, &summary)
if err3 != nil {
fmt.Println("whoops:", err3)
//outputs: whoops: <nil>
}
log.Printf("s = %v", summary)
//outputs: s = &{{0 0 0 0 0 0 0 0 0 0}}
}
What am I doing wrong? The JSON tags in my struct match the json keys from the response exactly...
edit: here is the JSON returned from the API
{
"success": true,
"message": "''",
"result": [
{
"High": 0.0135,
"Low": 0.012,
"Created": "2014-02-13T00:00:00"
}
]
}
edit
i changed the struct to this but still not working
type Summary struct {
Result struct {
Created string `json:"created"`
High float64 `json:"high"`
Low float64 `json:"low"`
}
}

Answer 1

Change your structure like this
type Summary struct {
Sucess bool `json:"success"`
Message string `json:"message"`
Result []Result `json:"result"`
}
type Result struct {
Created string `json:"Created"`
High float64 `json:"High"`
Low float64 `json:"Low"`
}
Try this link

Answer 2

Its because you're trying to unmarshal an array into struct,
Use array instead of the Result struct
type Summary struct {
Result []struct {
Created string `json:"created"`
High float64 `json:"high"`
Low float64 `json:"low"`
}
}
Use this weblink to convert your JSON objects to Go Struct >> https://mholt.github.io/json-to-go/