I am attempting to upload multiple files using Dio, upon the request being sent I am receiving the error:
DioError (DioError [DioErrorType.other]: Bad state: Can't finalize a finalized MultipartFile.
My request is as follows:
Future<String> sendRequest() async {
_className = classController.text;
_studentName = studentController.text;
_assnNum = assignmentController.text;
if (_className != null && _studentName != null && _assnNum != null) {
var url =
"http://157.245.141.117:8000/uploadfile?collection=$_className&assn_num=$_assnNum&student_name=$_studentName";
var uri = Uri.parse(url);
var formData = FormData();
for (var file in _files) {
print('FilePath: ${file.path}');
formData.files.addAll([
MapEntry("assignment", await MultipartFile.fromFile(file.path)),
]);
var response = await dio.post(
url,
data: formData,
options: Options(headers: {
HttpHeaders.contentTypeHeader: "application/x-www-form-urlencoded",
}),
);
print(response.statusCode);
}
}
return '';
}
I am receiving a status on my api of 200, all params are being passed, but the files are not being uploaded. I'm not sure where to begin. I am uploading cpp files and python files, most examples I have found are dealing exclusively with images. I am unsure how to proceed.
Related
How can we upload images(.jpg, .png) to Azure blob storage. Not getting any insight to start with.
If you have used example would love to see and try if that is the way to do, any working example/url would help get started with
Here is i am trying to upload .jpg file and getting 400 error,
image.forEach((element) async {
ImageDetailsUpload result = ImageDetailsUpload.fromJson(element);
var postUri = Uri.parse('$url/${result.fileName}?$code'); //Azure blob url
var request = new http.MultipartRequest("PUT", postUri); //Put method
request.files.add(
new http.MultipartFile.fromBytes(
'file',
await File.fromUri(Uri.parse(result.path)).readAsBytes(),
),
);
request.send().then((response) {
print(response.statusCode);
}, onError: (err) {
print(err);
});
});
image is a LIST and holds the fileName and File path, this is what i get as bytes (see image below)
Solved the issue of upload but image is being corrupted now on server -
image.forEach((element) async {
ImageDetailsUpload result = ImageDetailsUpload.fromJson(element);
var postUri = Uri.parse('$url/${result.fileName}?$code');
var request = new http.MultipartRequest("PUT", postUri);
request.headers['X-MS-BLOB-TYPE'] = 'BlockBlob';
request.files.add(
new http.MultipartFile.fromBytes(
'file',
await File.fromUri(Uri.parse(result.path)).readAsBytes(),
),
);
request.send().then((response) {
print(response.statusCode);
}, onError: (err) {
print(err);
});
});
this seems to haunting me.
There is more to the question, what i noticed is the file uploaded using postman to blob storage are store as actual image of type image/jpeg depending on what type of image i am uploading. But when uploading using application i am using as mutipart which is making th e stored file into of type multipart/form-data. Uploaded both types of image jpg/png both gives type as mentioned above.
[![enter image description here][3]][3]
check here if you are using HTTP
How to upload images and file to a server in Flutter?
check this code if you are using Dio
FormData formData = FormData.from({
"name": "wendux",
"age": 25,
"file": await MultipartFile.fromFile("./text.txt",filename: "upload.txt")
});
response = await dio.post("/info", data: formData);
and check Dio's documentation
https://pub.dev/packages/dio
Here is a working example from one of my codes
Future<UploadImageResultModel> uploadImage(File image, String memberToken,
{String type = "IMAGE"}) async {
var uri = Uri.parse('${Constants.baseUrl}member/UploadImage/$type');
var request = new http.MultipartRequest("POST", uri);
request.headers.addAll({
"Authentication": memberToken,
});
var stream = new http.ByteStream(DelegatingStream.typed(image.openRead()));
var length = await image.length();
var multipartFile = new http.MultipartFile('file', stream, length,
filename: image.path.split("/").last);
request.files.add(multipartFile);
var streamedResponse = await request.send();
var response = await http.Response.fromStream(streamedResponse);
if (response.statusCode != 200)
return UploadImageResultModel.fromJson(json.decode("{}"));
return UploadImageResultModel.fromJson(json.decode(response.body));
}
First, convert the image File to Stream as data will be a push to the blob container in form of a stream.
Future uploadImage(File file) async {
String fileName = file.path.split('/').last;
_logger.info("File Path: " + fileName);
String imageToken = "Get your own token";
String containerName = "Blob container name";
final fileBytes = file.readAsBytesSync();
var streamData = Stream.fromIterable(fileBytes.map((e) => [e]));
String uploadDestinationUrl = RollaConstants.HOST_IMAGE +
"/$containerName" +
"/$fileName" +
imageToken;
final Dio _dio = Dio();
Response response;
try {
response = await _dio.put(uploadDestinationUrl,
data: streamData,
options: Options(headers: {
Headers.contentLengthHeader: fileBytes.length,
"x-ms-blob-type": "BlockBlob",
"content-type": "image/jpeg"
}));
} catch (error, stacktrace) {
print("Exception occured: $error.response stackTrace: $stacktrace");
}
print("Blob response: " + response.statusCode.toString());
}
Hi i'm trying refreshtoken logic in Dio interceptor. it's working fine for json body params, but its throwing DioError [DioErrorType.DEFAULT]: Bad state: Can‘t finalize a finalized MultipartFile when i tried uploading images.
onError: (DioError error) async {
// Do something with response error
if (error.response?.statusCode == 401) {
// _dio.interceptors.requestLock.lock();
Response response;
RequestOptions options = error.response.request;
response = await _dio
.post('/user/refresh', data: {"refreshToken": _refreshToken});
if (response.statusCode == 200) {
final userData = json.encode(
{
'token': response.data["accessToken"],
'tokenType': _tokenType,
'refreshToken': response.data["refreshToken"]
},
);
prefs.setString('userData', userData);
options.data = formData;
}
options.headers["Authorization"] =
"$_tokenType ${response.data['accessToken']}";
return await _dio.request(options.path, options: options);
} else {
throw error;
}
I put together a workaround for this issue which basically consists of rebuilding the FormData before retrying. It feels a bit hacky but it works. I start by passing any info I need for the reconstruction in via the "extra" map in the request options so the interceptor has access to it. Here is some pseudo code:
//original request
dioResponse = await dio.post(
'http://my/api/endpoint',
data: myOriginalFormData,
options: Options(
headers: myHeaders,
extra: {'pathToMyFile': pathToMyFile},
),
);
//and in my interceptor I use it to construct a fresh FormData that has not been finalized
final FormData newFormData = FormData.fromMap({
'file': await MultipartFile.fromFile(
requestOptions.extra['pathToMyFile'],
contentType: MediaType('application/json', 'json')),
});
//retry with the fresh FormData
return dio.request(
requestOptions.path,
data: newFormData,
options: requestOptions,
cancelToken: requestOptions.cancelToken,
onReceiveProgress: requestOptions.onReceiveProgress,
onSendProgress: requestOptions.onSendProgress,
queryParameters: requestOptions.queryParameters,
);
Anyone have thoughts on this approach? Any major downsides?
I am trying to Upload Multiple Images through Api but i am not understanding how to send a list, I can upload a single image though. Tried alot of searches but does'nt helped, i also import multi_image_picker i can pick the images but the problem is in uploading.
Future<Map<String, dynamic>> _uploadImage(File image) async {
String value = '';
SharedPreferences pref2 = await SharedPreferences.getInstance();
value = pref2.getString("user_role");
final mimeTypeData =
lookupMimeType(image.path, headerBytes: [0xFF, 0xD8]).split('/');
// Intilize the multipart request
final imageUploadRequest = http.MultipartRequest('POST', apiUrl);
// Attach the file in the request
final file = await http.MultipartFile.fromPath('photo', image.path,
contentType: MediaType(mimeTypeData[0], mimeTypeData[1]));
// Explicitly pass the extension of the image with request body
// Since image_picker has some bugs due which it mixes up
// image extension with file name like this filenamejpge
// Which creates some problem at the server side to manage
// or verify the file extension
imageUploadRequest.files.add(file);
imageUploadRequest.fields['mobile'] = _mobileNo.text;
imageUploadRequest.headers.addAll({
'Content-Type': 'application/json',
'Authorization': Constants.authToken,
});
var response = await imageUploadRequest.send();
if (response.statusCode == 200) print('Done!');
final respStr = await response.stream.bytesToString();
return json.decode(respStr);
}
this an example of uploading files to your API with HTTP package
import 'package:http/http.dart' as http;
void uploadFiles(List<File> files) async {
final url = YOUR-API-LINK;
for (var file in files) {
// Create a multipart request
var request = http.MultipartRequest('POST', Uri.parse(url));
// Add the file to the request
request.files.add(http.MultipartFile.fromBytes(
'file',
file.readAsBytesSync(),
filename: file.path.split('/').last,
));
// Send the request
var response = await request.send();
// Check the status code
if (response.statusCode != 200) {
print('Failed to upload file');
}else{
print response.body;
}
}
}
for Dio use this
void uploadFiles(List<File> files) async {
final url = YOUR-API-LINK;
// Create a Dio client
var dio = Dio();
// Create a FormData object
var formData = FormData();
// Add the files to the FormData object
for (var file in files) {
formData.files.add(MapEntry(
'file',
await MultipartFile.fromFile(file.path, filename: file.path.split('/').last),
));
}
// Send the request
var response = await dio.post(url, data: formData);
// Check the status code
if (response.statusCode != 200) {
print('Failed to upload files');
}else {
print(response.data)
}
}
as you can see there not much difference between them in http you use MultipartRequest in dio you use FormData.
I am trying to upload files using dio package in my flutter application. I am sending my files through formdata. Here is my implementation:
Future<FormData> formData1() async {
return FormData.fromMap({
"title": "from app2",
"description": "app upload test",
"files": [
for (var i = 0; i < pathNames.length; i++)
await MultipartFile.fromFile(pathNames[i],
filename: fileNames[i])
]
});
}
Here is how I am sending my files.
_sendToServer() async {
Dio dio = Dio(
BaseOptions(
contentType: 'multipart/form-data',
headers: {
"Authorization": "$token",
},
),
);
dio.interceptors.add(
LogInterceptor(requestBody: true, request: true, responseBody: true));
FormData formData = await formData1();
try {
var response = await dio.post("http://url/api/upload",
data: formData, onSendProgress: (int send, int total) {
print((send / total) * 100);
});
print(response);
} on DioError catch (e) {
if (e.response != null) {
print(e.response.data);
print(e.response.headers);
print(e.response.request);
} else {
print(e.request.headers);
print(e.message);
}
}
}
The other fields in formdata are sent to the server but not the multipartfile. When I try and do the same from postman form-data, it uploads correctly. Am I doing something wrong here?
If you want to upload the file you can convert multipart array before calling API function because even if you put await in form data dio response will not wait for formdata object or you can use MultipartFile.fromFileSync() to get rid of await.
Let me show you in a simple way using my example. try to understand.
Multipart conversion
List multipartArray = [];
for (var i = 0; i < pathNames.length; i++){
multipartArray.add(MultipartFile.fromFileSync(pathNames[i], filename:
basename(pathNames[i])));
}
Api side
static Future<Response> createPostApi(multipartArray) async {
var uri = Uri.parse('http://your_base_url/post');
return await Dio()
.post('$uri',
data: FormData.fromMap({
"title": "from app2",
"description": "app upload test",
"files": multipartArray
}))
.catchError((e) {
print(e.response.data);
print(e.response.headers);
print(e.response.request);
});
}
Here is my code where I used file_picker flutter library and MediaType('application', 'pdf') to ensure that the content passed to the API was indeed a .pdf file.
import 'dart:io';
import 'package:dio/dio.dart';
import 'package:http_parser/http_parser.dart';
static Future<dynamic> uploadfile(int userid, File file, String token) async {
var fileName = file.path.split('/').last;
print(fileName);
var formData = FormData.fromMap({
'title': 'Upload Dokumen',
'uploaded_file': await MultipartFile.fromFile(file.path,
filename: fileName, contentType: MediaType('application', 'pdf')),
"type": "application/pdf"
});
var response = await Dio().post('${urlapi}request/',
options: Options(
contentType: 'multipart/form-data',
headers: {HttpHeaders.authorizationHeader: 'Token $token'}),
data: formData);
print(response);
return response;
}
The file picker:
FilePickerResult? result = await FilePicker.platform.pickFiles();
if (result != null) {
File file = File(result.files.single.path ??'file.pdf');
BlocProvider.of<UploadCubit>(context)
.uploadFile(statelogin.user.id, file,
statelogin.user.token);
}
Change formdata with following rest is fine
import 'package:path/path.dart' as pathManager;
import 'package:mime/mime.dart' as mimeManager;
FormData formdata = FormData();
formdata.add(
"files",
[UploadFileInfo(img, pathManager.basename(img.path),
contentType:
ContentType.parse(mimeManager.lookupMimeType(img.path)))]);
// here attachmentFile is File instance, which is set by File Picker
Map<String, dynamic> _documentFormData = {};
if (attachmentFile != null) {
_documentFormData['document_file'] = MultipartFile.fromFileSync(attachmentFile.path);
}
FormData formData = FormData.fromMap(_documentFormData);
try {
var response = await dio.post("http://url/api/upload",
data: formData, onSendProgress: (int send, int total) {
print((send / total) * 100);
});
print(response);
} on DioError catch (e) {
if (e.response != null) {
print(e.response.data);
print(e.response.headers);
print(e.response.request);
} else {
print(e.request.headers);
print(e.message);
}
}
Here you can use MultipartRequest class without using any of library to upload any kind of files using restAPI.
void uploadFile(File file) async {
// string to uri
var uri = Uri.parse("enter here upload URL");
// create multipart request
var request = new http.MultipartRequest("POST", uri);
// if you need more parameters to parse, add those like this. i added "user_id". here this "user_id" is a key of the API request
request.fields["user_id"] = "text";
// multipart that takes file.. here this "idDocumentOne_1" is a key of the API request
MultipartFile multipartFile = await http.MultipartFile.fromPath(
'idDocumentOne_1',
file.path
);
// add file to multipart
request.files.add(multipartFile);
// send request to upload file
await request.send().then((response) async {
// listen for response
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}).catchError((e) {
print(e);
});
}
I used file picker to pick file. Here is the codes for pick file.
Future getPdfAndUpload(int position) async {
File file = await FilePicker.getFile(
type: FileType.custom,
allowedExtensions: ['pdf','docx'],
);
if(file != null) {
setState(() {
file1 = file; //file1 is a global variable which i created
});
}
}
here file_picker flutter library.
This question already has an answer here:
Upload image with http.post and registration form in Flutter?
(1 answer)
Closed 3 years ago.
I am new to Flutter development. My problem is that I try to upload the image but I keep getting failed request.
This piece of code is where I connect it with a server API which will receive the image file from Flutter. String attachment which consist of the image path that is passed from createIncident function located at another page.
Future<IncidentCreateResponse> createIncident( String requesterName, String requesterEmail,
String requesterMobile, String attachment, String title,
String tags, String body, String teamId,
String address ) async {
IncidentCreateResponse incidentCreateResponse;
var url = GlobalConfig.API_BASE_HANDESK + GlobalConfig.API_INCIDENT_CREATE_TICKETS;
var token = Auth().loginSession.accessToken;
var postBody = new Map<String, dynamic>();
postBody["requester_name"] = requesterName;
postBody["requester_email"] = requesterEmail;
postBody["requester_mobile_no"] = requesterMobile;
postBody["attachment"] = attachment;
postBody["title"] = title;
postBody["tags"] = tags;
postBody["body"] = body;
postBody["teamId"] = teamId;
postBody["address"] = address;
// Await the http get response, then decode the json-formatted responce.
var response = await http.post(
url,
body: postBody,
headers: {
'X-APP-ID': GlobalConfig.APP_ID,
"Accept": "application/json; charset=UTF-8",
// "Content-Type": "application/x-www-form-urlencoded",
HttpHeaders.authorizationHeader: 'Bearer $token',
'token': GlobalConfig.API_INCIDENT_REPORT_TOKEN
}
);
if ((response.statusCode == 200) || (response.statusCode == 201)) {
print(response.body);
var data = json.decode(response.body);
incidentCreateResponse = IncidentCreateResponse.fromJson(data['data']);
} else {
print("createIncident failed with status: ${response.statusCode}.");
incidentCreateResponse = null;
}
return incidentCreateResponse;
}
This is the code snippet where I get the image path from the selected image from the gallery
Future getImageFromGallery(BuildContext context) async {
var picture = await ImagePicker.pickImage(source: ImageSource.gallery);
setState((){
_imageFile = picture;
attachment = basename(_imageFile.path);
});
Navigator.of(context).pop();
}
This is the code where I passed the attachment string to the HTTP Response
this.incidentService.createIncident(
Auth().loginSession.name,
Auth().loginSession.email,
Auth().loginSession.mobile_no,
this.attachment,
this._titleController.text,
this._tags,
this._contentController.text,
this._teamId,
this._addressController.text
).then((IncidentCreateResponse res) {
if (res != null) {
print('Ticket Id: ' + res.id);
// Navigator.pop(context);
this._successSubmittionDialog(context);
} else {
this._errorSubmittionDialog(context);
}
}
You can upload image using multipart or base64 Encode.
For uploading image using multipart Visit the Official documentation
For uploading image using base64 Encode you can checkout the Tutorial Here
I suggest using multipart image upload as it is even reliable when your image or files are larger in size.
Hope this could help you,
create a function to upload your image after picking or clicking an image like,
Future<ResponseModel> uploadPhoto(
String _token,
File _image,
String _path,
) async {
Dio dio = new Dio();
FormData _formdata = new FormData();
_formdata.add("photo", new UploadFileInfo(_image, _path));
final response = await dio.post(
baseUrl + '/image/upload',
data: _formdata,
options: Options(
method: 'POST',
headers: {
authTokenHeader: _token,
},
responseType: ResponseType.json,
),
);
if (response.statusCode == 200 || response.statusCode == 500) {
return ResponseModel.fromJson(json.decode(response.toString()));
} else {
throw Exception('Failed to upload!');
}
}
then you can use use uploadImage,
uploadImage(_token, _image,_image.uri.toFilePath()).then((ResponseModel response) {
//do something with the response
});
I have used Dio for the task, you can find more detail about dio here
Add this to your package's pubspec.yaml file:
dependencies:
dio: ^3.0.5
Then import it in your Dart code, you can use:
import 'package:dio/dio.dart';
To upload image using multipart API use this code ie
Add this library dio in your project in pubspec.yaml file
dio: ^3.0.5
and import this in your class
import 'package:dio/dio.dart';
Declare this variable in your class like State<CustomClass>
static var uri = "BASE_URL_HERE";
static BaseOptions options = BaseOptions(
baseUrl: uri,
responseType: ResponseType.plain,
connectTimeout: 30000,
receiveTimeout: 30000,
validateStatus: (code) {
if (code >= 200) {
return true;
}
});
static Dio dio = Dio(options);
then use this method to upload file
Future<dynamic> _uploadFile() async {
try {
Options options = Options(
//contentType: ContentType.parse('application/json'), // only for json type api
);
var directory = await getExternalStorageDirectory(); // directory path
final path = await directory.path; // path of the directory
Response response = await dio.post('/update_profile',
data: FormData.from({
"param_key": "value",
"param2_key": "value",
"param3_key": "value",
"profile_pic_param_key": UploadFileInfo(File("$path/pic.jpg"), "pic.jpg"),
}),
options: options);
setState(() {
isLoading = false;
});
if (response.statusCode == 200 || response.statusCode == 201) {
var responseJson = json.decode(response.data);
return responseJson;
} else if (response.statusCode == 401) {
print(' response code 401');
throw Exception("Incorrect Email/Password");
} else
throw Exception('Authentication Error');
} on DioError catch (exception) {
if (exception == null ||
exception.toString().contains('SocketException')) {
throw Exception("Network Error");
} else if (exception.type == DioErrorType.RECEIVE_TIMEOUT ||
exception.type == DioErrorType.CONNECT_TIMEOUT) {
throw Exception(
"Could'nt connect, please ensure you have a stable network.");
} else {
return null;
}
}
}