修改获取公众号openid

openid.go

@@ -89,5 +89,9 @@ func GetMpOpenid(appid, secret, code string) (MpOpenIdData, error) {
 
 	err = json.Unmarshal(data_byte, &data)
 
+	if data.Errcode != 0 {
+		return data, errors.New(data.Errmsg)
+	}
+
 	return data, err
 }