Post request with data in go - go

Question

I'm trying to access an API like this:
package main
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"net/url"
)
func main() {
apiUrl := "https://example.com/api/"
data := url.Values{}
data.Set("api_token", "MY_KEY")
data.Add("action", "list_projects")
req, _ := http.NewRequest("POST", apiUrl, bytes.NewBufferString(data.Encode()))
client := &http.Client{}
resp, err := client.Do(req)
defer resp.Body.Close()
if err == nil {
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(resp.Status)
fmt.Println(string(body))
}
}
But the response from an API tells me there was no data in POST request.
If I do it like this with curl, it works:
$ curl -X POST "https://example.com/api/" -d "api_token=MY_KEY" -d "action=list_projects"

Answer 1

You may want to use this form of request
resp, err := http.PostForm("http://example.com/form",
url.Values{"key": {"Value"}, "id": {"123"}})
or use the right mime type :
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
and encode data
strings.NewReader(data.Encode())
It's better if you test err != nil and return if necessary. This code may not work cause the request failed.
defer resp.Body.Close()
instead use this pattern:
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
fmt.Println(err)
return
}
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println(resp.Status)
fmt.Println(string(body))
So you can see in the console if the request failed or not