How to parse a multipart/form-data of http response from server, if it contains a list of binary files (images)?
For example:
var request = http.MultipartRequest('GET', url);
var streamedResponse = await request.send();
if (streamedResponse.statusCode == 200) {
var response = await http.Response.fromStream(streamedResponse); // it is just a binary data, not a list of files
}
Maybe there is something similar to HttpMultipartParser from .NET in flutter?
Try below solution
Future uploadmultipleimage(List images) async {
var uri = Uri.parse("");
http.MultipartRequest request = new http.MultipartRequest('POST', uri);
request.headers[''] = '';
request.fields['user_id'] = '10';
request.fields['post_details'] = 'dfsfdsfsd';
//multipartFile = new http.MultipartFile("imagefile", stream, length, filename: basename(imageFile.path));
List<MultipartFile> newList = new List<MultipartFile>();
for (int i = 0; i < images.length; i++) {
File imageFile = File(images[i].toString());
var stream =
new http.ByteStream(DelegatingStream.typed(imageFile.openRead()));
var length = await imageFile.length();
var multipartFile = new http.MultipartFile("imagefile", stream, length,
filename: basename(imageFile.path));
newList.add(multipartFile);
}
request.files.addAll(newList);
var response = await request.send();
if (response.statusCode == 200) {
print("Image Uploaded");
} else {
print("Upload Failed");
}
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}
Related
I am trying to do so using Multipartfile class. My field name in the strapi is profile_image. Other details are updated, but neither image is uploaded in the media library, nor image is updated for this particular record.
try {
var url = "${kAPIURL}users/${bodyData["id"]}";
var imageBytes = await image!.readAsBytes();
int length = imageBytes.length;
http.ByteStream byteStream = http.ByteStream(image.openRead());
Stream<List<int>> stream = byteStream.cast();
var request = http.MultipartRequest('PUT', Uri.parse(url));
request.headers['Authorization'] = 'Bearer ${bodyData["jwt"]}';
request.fields['id'] = bodyData['id'];
request.fields['username'] = bodyData['username'];
request.fields['specific_type'] = bodyData['specific_type'];
request.fields['sex'] = bodyData['sex'];
request.fields['phone_number'] = bodyData['phone_number'];
request.fields['email'] = bodyData['email'];
var profileImage = http.MultipartFile(
'files.profile_image', stream, length,
filename: image.path.split('/').last.toString(),
contentType: MediaType('image', 'jpg'));
request.files.add(profileImage);
var response = await request.send();
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
if (response.statusCode == 200) {
Provider.of<MainScreenProvider>(context, listen: false).isDeleteCache =
true;
return response;
} else {
return response;
}
} on Exception {
throw Exception("Unable to update user details.");
}
I'm trying to upload image to my server but it's not receiving in my server when I upload file from app. But if I upload via postman it works but not from simulator
My Code
final request = http.MultipartRequest(
'POST', Uri.parse(''));
request.fields['title'] = title.text;
request.fields['sub_title'] = subTitle.text;
request.files
.add(await http.MultipartFile.fromPath('profile_photo', photo.path));
request.files
.add(await http.MultipartFile.fromPath('profile_video', video.path));
var response = await request.send();
var responseString = await response.stream.bytesToString();
print(responseString);
`
Output
{'title': 'zia', 'sub_title' : 'sultan', 'profile_photo' : {}, 'profile_video' : {}}
I too faced a similar issue and here is the solution to how I fixed it:
var fileExtension = AppUtils.getFileExtension(filePath);
if (fileExtension.isEmpty) {
AppUtils.showToast('File extension was not found');
return false;
}
final file = await http.MultipartFile.fromPath('vid', filePath,
contentType: MediaType('application', fileExtension));
request.files.add(file);
var res = await request.send();
if (res.statusCode == 200) {
final respString = await res.stream.bytesToString();
debugPrint('respString: $respString');
}
AppUtils:
class AppUtils {
static String getFileExtension(String filePath) {
try {
int index = filePath.lastIndexOf('.');
return filePath.substring(index + 1);
} catch (e) {
return '';
}
}
}
I am trying to uploading multiple files from my flutter mobile app. Here is my screenshot of the postman. This works fine on postMan. But I am getting 400 errors on the flutter mobile app. I can't find out where is the problem?
Now here is the code of my flutter mobile app upload.
if(images.length>0){
for (int i = 0; i < images.length; i++) {
var path = await FlutterAbsolutePath.getAbsolutePath(images[i].identifier);
String fileName = path.split('/').last;
var file = await MultipartFile.fromFile(path, filename:fileName);
multipart.add(file);
}
FormData imageFormData = FormData.fromMap(
{
"feedId": value.id,
"images": multipart,
"userInformationsId": value.userInformationId
});
print(multipart.length);
uploadFeedPicture(imageFormData);
}
Future<String> uploadFeedPicture(FormData _imageformData) async{
String at = await _apiProvider.getAccessToken();
Dio dio = new Dio();
// dio.options.headers['accept'] = 'application/json';
// dio.options.headers["content-Type"] = "multipart/form-data";
dio.options.headers["Authorization"] = "Bearer ${at}";
dio.options.baseUrl = getBaseUrl();
var _baseUrl = getBaseUrl();
await dio.post('/api/feed/upload', data: _imageformData, options: Options(
followRedirects: false,
validateStatus: (status) { return status < 500; }
), onSendProgress: (int sent, int total) {
print("$sent $total");
},).then((value) {
print(value.data);
print(value.headers);
}
).catchError((error) => print(error) );
}
And I am getting this response.
{statusCode: 400, error: Bad Request, message: Invalid request payload input}
Please Help me out where is the problem? I try with change content-type but not working.
After trying so many different ways I found the solution. Here it is.
if(value.id != null){
String at = await _apiProvider.getAccessToken();
Map<String, String> headers = { "Authorization": "Bearer ${at}"};
var uri = Uri.parse('$baseUrl/api/feed/upload');
var request = http.MultipartRequest('POST', uri);
request.headers.addAll(headers);
if(images.length>0){
for (int i = 0; i < images.length; i++) {
var path = await FlutterAbsolutePath.getAbsolutePath(images[i].identifier);
// String fileName = path.split('/').last;
var file = await MultipartFile.fromPath("images",path);
request.files.add(file);
}
request..fields['feedId'] = value.id;
request..fields['userInformationsId'] = value.userInformationId;
var response = await request.send();
if (response.statusCode == 200) {
Navigator.pop(context);
showSuccessToast("Posted succesfull");
counter.update(0);
Navigator.push(
context,
MaterialPageRoute(builder: (context) => HomePage()),
);
}else{
showErrorToast("Upload image failed");
}
}
}
I have an Endpoint on my server which accepts multipart/form-data and sends back json as a response.
I want to send an Image from my flutter App to my server and Decode the json received from the server.
You can use http.MultipartRequest for that
Example:-
static Future<UploadImageRes> uploadImage(int id, File imageFile) async {
if (imageFile != null) {
var stream = new http.ByteStream(imageFile.openRead());
var length = await imageFile.length();
String token = PreferenceUtils.getString(AppConstants.LOGGED_IN);
var uri = Uri.parse(UrlConstants.ADD_RECIPE_PHOTO);
LogUtils.d("====uri : $uri");
LogUtils.d("====recipeId : $id");
var request = new http.MultipartRequest("POST", uri);
String fileName = imageFile.path.split("/").last;
var multipartFile = new http.MultipartFile('photo', stream, length,
filename: fileName, contentType: new MediaType('image', 'jpeg'));
request.headers.addAll({"Authorization": "Bearer $token"});
request.files.add(multipartFile);
request.fields["recipeId"] = "$id";
var response = await request.send();
var statusCode = response.statusCode;
LogUtils.d("====statusCode : $statusCode");
if (statusCode < 200 || statusCode >= 400) {
throw new ApiException("Uploading failed");
}
final respStr = await response.stream.bytesToString();
return Future.value(UploadImageRes.fromJson(JsonDecoder().convert(respStr)));
} else {
throw new ApiException("Uploading failed");
}
}
In final respStr = await response.stream.bytesToString(); you will get your api response
I'm trying to upload an image through the flutter via post method. and I'm using image_picker for pick file from mobile but I can't able to upload
and I have tried to send the file like FormData that also doesn't work
Future<dynamic> uploadLicence(int id ,dynamic obj) async {
FormData formdata = new FormData(); // just like JS
formdata.add("image",obj);
final response = await post('Logistic/driver/LicenceImage?
driverId=$id',
formdata);
print(response);
// return null;
if (response.statusCode == 200) {
final result = json.decode(response.body);
return result;
} else {
return null;
}
}
after that, I just tried with this method but this also not working
Future<dynamic> uploadLicence(int id, File file) async {
final url = Uri.parse('$BASE_URL/Logistic/driver/LicenceImage?
driverId=$id');
final fileName = path.basename(file.path);
final bytes = await compute(compress, file.readAsBytesSync());
var request = http.MultipartRequest('POST', url)
..files.add(new http.MultipartFile.fromBytes(
'image',bytes,filename: fileName,);
var response = await request.send();
var decoded = await
response.stream.bytesToString().then(json.decode);
if (response.statusCode == HttpStatus.OK) {
print("image uploded $decoded");
} else {
print("image uplod failed ");
}
}
List<int> compress(List<int> bytes) {
var image = img.decodeImage(bytes);
var resize = img.copyResize(image);
return img.encodePng(resize, level: 1);
}
It's possible with MultipartRequest. Or you can use simply dio package. It's one command.
With http:
import 'package:http/http.dart' as http;
final Uri uri = Uri.parse(url);
final http.MultipartRequest request = http.MultipartRequest("POST", uri);
// Additional key-values here
request.fields['sample'] = variable;
// Adding the file, field is the key for file and file is the value
request.files.add(http.MultipartFile.fromBytes(
field, await file.readAsBytes(), filename: filename);
// progress track of uploading process
final http.StreamedResponse response = await request.send();
print('statusCode => ${response.statusCode}');
// checking response data
Map<String, dynamic> data;
await for (String s in response.stream.transform(utf8.decoder)) {
data = jsonDecode(s);
print('data: $data');
}
I user this code for my project i hope work for you
Upload(File imageFile) async {
var stream = new http.ByteStream(DelegatingStream.typed(imageFile.openRead()));
var length = await imageFile.length();
var uri = Uri.parse(uploadURL);
var request = new http.MultipartRequest("POST", uri);
var multipartFile = new http.MultipartFile('file', stream, length,
filename: basename(imageFile.path));
//contentType: new MediaType('image', 'png'));
request.files.add(multipartFile);
var response = await request.send();
print(response.statusCode);
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}