Golang - library / package that returns json string from http request

Question

Is there a library / package that returns a json string received in response to an HTTP request. It's pretty simple, so I can write my own, but would prefer the existing / tested code to reinvent the wheel.

I currently have:

func getJsonStr(url string) ([]byte, error) { resp, err := http.Get(url) if err != nil { return []byte{0}, err } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { return []byte{0}, err } return body, nil } 

EDIT: I'm looking for something like a Node module 'request' that allows me to do this on one line, for example: jsonStr, err: = getJsonStr (url).

Answer 1

Since you did not want to define the structure, it is also possible (but a little ugly) to untie a map of a card like [string] interface {} {}

 package main import ( "encoding/json" "fmt" "io/ioutil" "net/http" ) func main() { data := map[string]interface{}{} r, _ := http.Get("http://api.stackoverflow.com/1.1/tags?pagesize=100&page=1") defer r.Body.Close() body, _ := ioutil.ReadAll(r.Body) json.Unmarshal(body, &data) fmt.Println("Total:", data["total"], "page:", data["page"], "pagesize:", data["pagesize"]) // Total: 34055 page: 1 pagesize: 100 } 

Answer 2

There is nothing wrong with using an existing system package and it is quite simple to get json data over http in go

 package main import ( "encoding/json" "fmt" "net/http" ) func main() { var data struct { Items []struct { Name string Count int Is_required bool Is_moderator_only bool Has_synonyms bool } } r, _ := http.Get("https://api.stackexchange.com/2.2/tags?page=1&pagesize=100&order=desc&sort=popular&site=stackoverflow") defer r.Body.Close() dec := json.NewDecoder(r.Body) dec.Decode(&data) for _, item := range data.Items { fmt.Printf("%s = %d\n", item.Name, item.Count) } } 

Exit go run main.go

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