回滚美团外卖

platformapi/fnpsapi_v3/fnpsapi.go

@@ -45,7 +45,7 @@ func New(appID, appSecret, merchantId string, config ...*platformapi.APIConfig)
 func (a *API) signParam2() (sig string) {
 	sb := new(strings.Builder)
 	sb.WriteString("grant_type=")
-	sb.WriteString("CODE") //todo
+	sb.WriteString(a.grantType)
 	sb.WriteString("&code=")
 	sb.WriteString(a.code) //todo
 	sb.WriteString("&app_id=")
@@ -104,6 +104,8 @@ func (a *API) AccessAPI(baseUrl, actionApi, method string, bizParams map[string]
 
 // 获取access_token
 func (a *API) GetAccessToken() (tokenInfo *TokenInfo, err error) {
+	a.grantType = "authorization_code"
+	a.signature = a.signParam2()
 	result, err := a.AccessAPI(TokenURL, "", RequestPost, nil)
 	if err != nil {
 		return nil, err