Parsing an array/slice sent by server

Question

A server is sending back such a response:

me@linux:~> curl -X GET http://*.*.*.*:8080/profiles

[
        {
                "ProfileID": 1,
                "Title": "65micron"
        },
        {
                "ProfileID": 2,
                "Title": "80micron"
        }
]

I have tried this solution to parse the response as JSON but it only works if the server response is like this:

{
    "array": [
        {
                "ProfileID": 1,
                "Title": "65micron"
        },
        {
                "ProfileID": 2,
                "Title": "80micron"
        }
    ]
}

Does anybody know how I can parse the server response as JSON?

One idea which occurred to me is to add { "array": to the beginning of http.Response.Body buffer and also add } to the its end, then use the standard solution. However, I'm not sure if that's the best idea.

Your json isn't valid, you are adding an extra ',' at the end of your objects. You can validate it using jsonlint.com. Correct it and try again — Ahmad Essam
– Ahmad Essam, Commented Dec 9, 2018 at 13:39
@AhmedEssam Thanks, my JSONs are super lengthy. I just pasted two key/values here as samples and I forgot to remove the extra , I'm going to fix my question now — Megidd
– Megidd, Commented Dec 9, 2018 at 13:41

ssemilla · Accepted Answer · 2018-12-09 13:55:18Z

2

You can unmarshal directly into an array

data := `[
    {
        "ProfileID": 1,
        "Title": "65micron"
    },
    {
        "ProfileID": 2,
        "Title": "80micron"
    }]`

type Profile struct {
    ProfileID int
    Title     string
}

var profiles []Profile

json.Unmarshal([]byte(data), &profiles)

You can also read directly from the Request.Body.

func Handler(w http.ResponseWriter, r *http.Request) {

    var profiles []Profile
    json.NewDecoder(r.Body).Decode(&profiles)
    // use `profiles`
}

Playground

edited Dec 9, 2018 at 13:55

answered Dec 9, 2018 at 13:36

ssemilla

3,96814 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

KibGzr · Accepted Answer · 2018-12-09 13:45:06Z

1

You should define a struct

type Profile struct {
    ID int `json:"ProfileID"`
    Title string `json:"Title"`
}

After that decode response

var r []Profile
err := json.NewDecoder(res.Body).Decode(&r)

edited Dec 9, 2018 at 13:45

answered Dec 9, 2018 at 13:38

KibGzr

2,09316 silver badges16 bronze badges

Collectives™ on Stack Overflow

Parsing an array/slice sent by server

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related