go - Handle response from post request to Json -

i'm using following code response server after post request:

type responsefrompost struct {     n_expediente string     enviar string }  func main(){      ......      res, err := client.do(req)     if err != nil {         return     }      defer res.body.close()      body, err := ioutil.readall(res.body)      var re responsefrompost     err = json.unmarshal(body, &re)     fmt.println(re.enviar); } 

with get:

    error: &{%!e(string=array) %!e(*reflect.rtype=&{32 2509985895 0 8 8 25 0x608170 [0x7703c0 <nil>] 0x730b80 0x69acb0 0x6116c0 0x7732c0})} 

the value sent server is:

[{"n_expediente":"9","enviar":"2"}] 

how can use json variables?

the json array of objects having strings n_expediente , enviar on each instance. in go you'll need array of type;

re := []responsefrompost{}  err := json.unmarshal([]byte(`[{"n_expediente":"9","enviar":"2"}]`), &re) fmt.println(re[0].enviar); 

here's example show model needs https://play.golang.org/p/d64sict4ag

you'll want make other changes code based on that. loop bound length of slice ( for := range re { print } ) after unmarshal , different name type.