On Tue, Nov 13, 2018, 5:23 AM <alive.s...@gmail.com> wrote:
> I just want to send a rest call with golang, but it failed, the error
> message : {"header":{"code":201,"desc":"param data not exist"}} . (but
> when I send rest request with postman ,it success)
> the code as follow
>
> 1 package main
> 2
> 3 import(
> 4 "net/http"
> 5 "fmt"
> 6 "strings"
> 7 "io/ioutil"
> 8 )
> 9 func check(err error){
> 10 if err !=nil{
> 11 panic(err)
> 12 }
> 13 }
> 14 func main(){
> 15 url:="http://ip:8080/api";
> 16 method:="POST"
> 17 da:="base64 encoded string"
> 18 data:=strings.NewReader(da)
>
This isn't an encoded form. And your server is complaining that it can't
find a "data" form field. Use url.Values to encode a form:
https://golang.org/pkg/net/url/#Values.Encode
var vals url.Values
vals.Add("data", "form data")
data:=strings.NewReader(vals.Encode())
19 req,err:=http.NewRequest(method,url,data)
> 20 check(err)
> 21
> req.Header.Set("Content_Type","application/x-www-form-urlencoded")
>
Should be "Content-Type"
22 client:=&http.Client{}
> 23 resp,err:=client.Do(req)
> 24 check(err)
> 25 defer resp.Body.Close()
> 26 result,err:=ioutil.ReadAll(resp.Body)
> 27 check(err)
> 28 fmt.Println(string(result[:]))
> 29 }
>
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