Trying to get 2 integers out of a JSON subsection - json

Question

I'm using the VirusTotal HTTP API in Golang to get the votes on an URL, both malicious and harmless.
I want to get them using structs, and then unmarshaling the URL using data from these structs. But when I try that, this error shows up:
cannot convert "harmless" (untyped string constant) to int
The code I am currently using is:
type Votes struct {
harmless int
malicious int
}
type Attributes struct {
votes []Votes `json:"total_votes"`
}
type data struct {
attributes []Attributes `json:"attributes"`
}
type jsonstruct struct {
data []data `json:"data"`
}
var printdata jsonstruct
fmt.Println(resp)
json.Unmarshal([]byte(body), &printdata)
fmt.Println(printdata.data[0].attributes[0].votes["harmless"])
And the part of the JSON that I want to get is:
{
"data": {
"attributes": {
"last_modification_date": 1642534694,
"last_http_response_cookies": {
"1P_JAR": "2022-01-18-19",
"NID": "511=drq8-0Gwl0gpw2D-iyZhxrizpE--UMOyc_bO381XXkxknypvl_IETvsxRw3p8kMlBtiYEuSbASKK1wHirmgxce79kgzGMg9MryT0PnHox6kWbmEQTe2vsv_HtVZDFDXiLt4HKpcyDczOT8c_OK8bPb_P-f8rbIXJu_xrA0Ce4lw",
"SameSite": "none"
},
"times_submitted": 82289,
"total_votes": {
"harmless": 54,
"malicious": 18
},
As you can see, I want to get the contents of the subsection total_votes, which are integers harmless and malicious. In short, how can I get them without getting the error about them being untyped strings?

Answer 1

You need to define valid data structure that matches json structure. And after Unmarshal you can access votes fields as res.Data.Attributes.TotalVotes.Harmless . For example (https://go.dev/play/p/YCtV1u-KF7Y):
package main
import (
"encoding/json"
"fmt"
"log"
)
type Result struct {
Data struct {
Attributes struct {
LastHTTPResponseCookies struct {
OnePJAR string `json:"1P_JAR"`
Nid string `json:"NID"`
SameSite string `json:"SameSite"`
} `json:"last_http_response_cookies"`
LastModificationDate float64 `json:"last_modification_date"`
TimesSubmitted float64 `json:"times_submitted"`
TotalVotes struct {
Harmless float64 `json:"harmless"`
Malicious float64 `json:"malicious"`
} `json:"total_votes"`
} `json:"attributes"`
} `json:"data"`
}
var input = `{
"data": {
"attributes": {
"last_modification_date": 1642534694,
"last_http_response_cookies": {
"1P_JAR": "2022-01-18-19",
"NID": "pcyDczOT8c_OK8bPb_P-f8rbIXJu_xrA0Ce4lw",
"SameSite": "none"
},
"times_submitted": 82289,
"total_votes": {
"harmless": 54,
"malicious": 18
}
}
}
}
`
func main() {
var res Result
if err := json.Unmarshal([]byte(input), &res); err != nil {
log.Fatal(err)
}
fmt.Printf("%+v", res.Data.Attributes.TotalVotes.Harmless)
}