json - With Go (golang) how can I Unmarshal data into a struct, and then call specific fields from the struct? -
i'm trying api request information steams public api (this learning go , learning how deal json / api requests) have gotten code far:
package main import ( "encoding/json" "fmt" "io/ioutil" "net/http" "strconv" ) type steamapi struct { apikey string } type getappnews struct { appnews struct { appid int `json:"appid"` newsitems []struct { gid int `json:"gid"` title string `json:"title"` url string `json:"url"` isexternalurl bool `json:"is_external_url"` author string `json:"author"` contents string `json:"contents"` feedlabel string `json:"feedlabel"` date int `json:"date"` } `json:"newsitems"` } `json:"appnews"` } type jsonresponse map[string]getappnews func (s steamapi) getnewsforapp(appid, count, maxlength int) error { sappid := strconv.itoa(appid) scount := strconv.itoa(count) smaxlength := strconv.itoa(maxlength) resp, err := http.get("http://api.steampowered.com/isteamnews/getnewsforapp/v0002/?appid=" + sappid + "&count=" + scount + "&maxlength=" + smaxlength + "&format=json") if err != nil { return err } defer resp.body.close() body, err := ioutil.readall(resp.body) if err != nil { return err } var jsonreturn jsonresponse json.unmarshal(body, &jsonreturn) fmt.println(jsonreturn) return nil } func main() { tester := steamapi{""} tester.getnewsforapp(440, 3, 300) } things seem work, alright, guess not formatting way expect unmarshal. prints out this:
map[appnews:{{0 []}}]
you can click here see format of json response looks like, if tell me have done wrong struct, in end expect able go like:
fmt.println(blah["appnews"]["appid"]) , return 440.
thats got go off of, if need anymore specific information let me know! help!
the data fits struct fine, no need map[string]getappnews.
type jsonresponse map[string]getappnews should getappnews.
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