我正在嘗試通過將 auth 結構轉換為application/x-www-form-urlencoded數據來發送 POST 請求。package mainimport ( "bytes" "encoding/json" "io/ioutil" "log" "net/http")type Payload struct { Username string `json:"username"` Password string `json:"password"` GrantType string `json:"grant_type"` Scope string `json:"scope"`}func main() { var endpoint string = "https://api.io/v1/oauth/token" jsonPay := &Payload{ Username: "email", Password: "pass", GrantType: "password", Scope: "SPACE SEPARATED STRINGS", } //byteArr, err := json.Marshal(jsonPay) //if err != nil { // log.Printf("Unable to map structure\n%v", err) //} payloadBuf := new(bytes.Buffer) json.NewEncoder(payloadBuf).Encode(jsonPay) req, err := http.NewRequest("POST", endpoint, payloadBuf) if err != nil { log.Fatal(err) } req.Header.Set("Content-Type", "application/x-www-form-urlencoded") req.Header.Add("Accept", "application/json") resp, err := http.DefaultClient.Do(req) if err != nil { log.Fatal(err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { log.Fatal(err) } log.Printf(string(body))}我試過了：發送一個 JSON 編碼的負載緩沖區，它返回{"error":"invalid_request","error_description":"Missing grant type"}與編組的 JSON 對象一起使用bytes.NewReader，它也返回{"error":"invalid_request","error_description":"Missing grant type"}strings.NewReader與 JSON 編碼的負載緩沖區一起使用，它返回cannot use payloadBuf (variable of type *bytes.Buffer) as type string in argument to strings.NewReader
1 回答
函數式編程
TA貢獻1807條經驗 獲得超9個贊
實施了@RedBlue 的建議：
package main
import (
"io/ioutil"
"log"
"net/http"
"strings"
"net/url"
)
type Payload struct {
Username string `json:"username"`
Password string `json:"password"`
GrantType string `json:"grant_type"`
Scope string `json:"scope"`
}
func main() {
const endpoint string = "https://api.io/v1/oauth/token"
formData := &Payload{
Username: "email",
Password: "pass",
GrantType: "password",
Scope: "SPACE SEPARATED STRINGS",
}
payload := url.Values{
"username": {formData.Username},
"password": {formData.Password},
"grant_type": {formData.GrantType},
"scope": {formData.Scope},
}
req, err := http.NewRequest("POST", endpoint, strings.NewReader(payload.Encode()))
if err != nil {
log.Printf("Unable to perform POST request:\n%v", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("Accept", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal(err)
}
log.Println(string(body))
}
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