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

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?

CodePudding user response：

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)
}