新建wwwform 键值对

         WWWForm form = new WWWForm();
        form.AddField("image_base64", hs.image_base64);
        form.AddField("template_base64", hs.template_base64);
        form.AddField("action_id", hs.action_id);
        form.AddField("version", hs.version);
         Encoding.UTF8.GetString(form.data);
1
2
3
4
5
6

form.data是byte[]类型

 UnityWebRequest request = new UnityWebRequest(url, "POST");
  request.uploadHandler = new UploadHandlerRaw(form.data); 
1
2