Flutter多部分请求，包含标头和其他字段

Question

我想向我的服务器发送一个Multipart请求，如下所示：

{
"file" : some_file.jpg,
"room" : {
"roomName" : "Room Name"
}
}

我有一些标题

{
"authorisation" : "Basic header"
"screenInfo" : "screenInfo",
"operation" : "operation",
"userId" : "integer",
}

我试过http。多部分请求以及Dio包，但我无法正确发送请求

我使用过的：

1. http.MultipartRequest

   final length = _mWebRequest.getRequestFiles()["file"].lengthSync();
   print("Length : $length");
   var request = http.MultipartRequest('POST', Uri.parse(urlString))
   ..headers.addAll(_mWebRequest.getHeaders())
   ..fields.addAll(_mWebRequest.getRequestParam())
   ..files.add(
   http.MultipartFile.fromBytes('file',
   _mWebRequest.getRequestFiles()["file"].readAsBytesSync(),
   filename: _mWebRequest
   .getRequestFiles()["file"]
   .path
   .split("/")
   .last),
   );
   

2. Dio包

   Dio dio = new Dio();
   var formData = FormData.fromMap({
   "room": {"roomName": "Custom Room 1", "isDefault": "false"},
   "file": await MultipartFile.fromFile(
   _mWebRequest.getRequestFiles()["file"].path,
   filename:
   _mWebRequest.getRequestFiles()["file"].path.split("/").last)
   });
   dio.options.headers.addAll(_mWebRequest.getHeaders());
   var response = await dio.post(urlString, data: formData);
   

有人能帮我吗？

Answer 1

虽然迟到了，但你在"授权"；与Z一起，授权