I have use expo-image-picker and axios 0.26.1. formData in axios version 0.26.1 isn't work. when using formData, data is not sent to the api
downgrade axios to version 0.24.0 but I get this error when sending formData in Android emulator.
Error: Network Error
formData:
export const sendRequest = (url, response, method, formData) => {
return axios({
url,
method,
data: method !== "get" ? formData : null,
headers: {
Authorization: `Bearer ${response.data.access}`,
transformRequest: (data, headers) => {
return formData;
},
},
});
const formData = new FormData();
const imageUri = image.value.uri;
const newImageUri = "file:///" + imageUri.split("file:/").join("");
formData.append("photo", {
uri: newImageUri,
type: mime.getType(newImageUri),
name: newImageUri.split("/").pop(),
});
data.append("title", title);
can you help me please?
This bug has been posted on Axios GitHub issues and apparently it is present since 0.25.0. I had to roll back to version 0.24.0 to make it work. However, this issue has been closed with the following solutions.
Method 1:
const formData = new FormData();
const response = await axios.post('/URL', formData, {
headers: {
...formData.getHeaders()
}
});
Method 2:
axios.post(url, formData, {
headers: { 'Content-Type': 'multipart/form-data' },
transformRequest: formData => formData,
})
You can check the issue here
I have tried doing
var photo = {
uri: uriFromCameraRoll,
type: 'image/jpeg',
name: 'photo.jpg',
};
and using
axios
var body = new FormData();
body.append('authToken', 'secret');
body.append('photo', photo);
body.append('title', 'A beautiful photo!');
const config = {
headers: {
'content-Type': 'multipart/form-data'
}
}
MY_API().then(instance => {
// it is axios instance
instance.post("/api/v1/upload",
{ body }
, config).then(res => {
console.log(JSON.stringify(res));
}).catch(err => {
console.log(err);
})
}
)
On removing config I get
Error 503
and with config it gives
Error: Multipart: Boundary not found
and works fine with POSTMAN also... Along with headers
I have also tried to upload File (blob) , but same error of
Error: Multipart: Boundary not found
dataURLtoFile(dataurl, filename) {
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while(n--){
u8arr[n] = bstr.charCodeAt(n);
}
return new File([u8arr], filename, {type:mime});
}
//Usage example:
var file = dataURLtoFile('data:text/plain;base64,aGVsbG8gd29ybGQ=', 'hello.txt');
console.log(file);
API works well in ReactJS with code
EDIT : I have solved the problem by using React-native-fetch-blob, but looking to solve using axios ,
here is the code :
RNFetchBlob.fetch('POST', 'https://helloapp.herokuapp.com/api/v1/upload', {
'authorization': jwtToken,
'Content-Type': 'multipart/form-data',
},
[
{ name: 'image', filename: 'avatar-png.png', type: 'image/png', data: base64logo },
{ name: 'name', data: name }
]
).then((resp) => {
console.log(resp);
}).catch((err) => {
console.log(err);
});
I have solved the problem by using React-native-fetch-blob, but looking to solve using axios ,
here is the code :
RNFetchBlob.fetch('POST', 'https://helloapp.herokuapp.com/api/v1/upload', {
'authorization': jwtToken,
'Content-Type': 'multipart/form-data',
},
[
{ name: 'image', filename: 'avatar-png.png', type: 'image/png', data: base64logo },
{ name: 'name', data: name }
]
).then((resp) => {
console.log(resp);
}).catch((err) => {
console.log(err);
});
Never Ever define content-type header while sending a file.
Browser/Postman will add it automatically which looks like this.
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7BojnnMEteO0aHWP
Form boundary is the delimiter for the form data. Boundary is calculated when request is sent so you cannot hardcode it.
Thats why you were getting error boundary not found.
Now you can use fetch , axios anything, it will work.
This is very important info which is not captured in the MDN Fetch docs
I have the following code for creating an event with a image and some body params. It was working fine when i was doing it without image, i am using react-native-image-crop-picker for selecting images. I am getting "Network request failed" error when posting data from react-native. The request never reach my backend as i am getting no logs there. It is working fine with postmen.
MY CODE:
const { name, date, description, location, uri, mime, time } = this.state;
const formData = new FormData();
formData.append('name', name)
formData.append('date', date)
formData.append('description', description)
formData.append('location', location)
formData.append('time', time)
formData.append('image',{
uri:uri,
mime:'image/jpeg',
name:`image${moment()}`
})
alert(JSON.stringify(formData));
const config = {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'multipart/form-data',
},
body: formData,
};
fetch(`http://${Config.apihost}:${Config.port}/events`,config).then((res) => res.json())
.then((res) => {
this.setState({ modalVisible: false, name:'', date: moment().format('YYYY-MM-DD'), description:'', Location: 'AlHedaya Masjid' })
this.props.addEvent(res.message);
// this.props.navigation.goBack();
}).catch((err) => alert(err));
I have another screen which contains different number of pictures like gallery i am uploading multiple picture to the gallery, the request is working fine with code below.
const data = new FormData();
data.append('name', 'avatar');
images.map((res, i) => {
data.append('fileData[]', {
uri: res.path,
type: res.mime,
name: `image${i}${moment()}`
});
})
const config = {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'multipart/form-data',
},
body: data,
};
fetch(`http://${Config.apihost}:${Config.port}/events/${this.state.item.id}/photos`, config)
.then((checkStatusAndGetJSONResponse) => checkStatusAndGetJSONResponse.json())
.then((response) => {
if (response.status && response.message.length > 0) {
var images = this.state.images;
response.message.map(file => {
images.push(`http:${Config.apihost}:${Config.port}/images/${file.id}`);
});
this.setState({ images });
}
}).catch((err) => { alert(err) });
I can't really see the difference between the two codes but the upper code giving me error.
I am testing on android
I am using the IP address instead of localhost (my others requests are working so thats out of equation)
None of the solution in this link worked
React Native fetch() Network Request Failed
Am I missing something?
In first code snippet you have written mime instead of type.
formData.append('image',{
uri:uri,
**mime:'image/jpeg**',
name:`image${moment()}`
})
it should be like below snippet
formData.append('image',{
uri:uri,
type:'image/jpeg',
name:`image${moment()}`
})
Is there a way to upload video to a server in react native?
I've looked into the react-native-uploader plugin on github, but it doesn't give any guidance on video uploads if it's even possible with that plugin.
Just use fetch for uploading
let formData = new FormData();
formData.append("videoFile", {
name: name.mp4,
uri: video.uri,
type: 'video/mp4'
});
formData.append("id", "1234567");
try {
let response = await fetch(url, {
method: 'post',
headers: {
'Content-Type': 'multipart/form-data',
},
body: formData
});
return await response.json();
}
catch (error) {
console.log('error : ' + error);
return error;
}
Here is another answer, using rn-fetch-blob in RN 0.57.8.
postVideo = (video,url) => {
RNFetchBlob.fetch('POST',url, {
'content-type': 'multipart/form-data',
"Accept":"multipart/form-data",
'access-token': AuthToken.token, //token from server
},[
//the value of name depends on the key from server
{name: 'video', filename: 'vid.mp4', data: RNFetchBlob.wrap(video.uri) },
]).then(response => response.json())
.then(response => {
if (response.status === 'success') {
alert("Upload success");
this.props.navigation.navigate('publish');
} else {
alert(response.msg);
}})
.catch((err) => {
alert(err);
})
}
Yes, it is possible.
you have to be running React Native 0.45.0 or higher, which do support accessing videos from camera roll.
you have to receive reference to image/video access from camera roll by calling CameraRoll.getPhotos(params) (more on this in docs)
then, use RNUploader.upload(...) to send assets to your serve (you need to link lib before!)
I'm trying to POST a JSON object using fetch.
From what I can understand, I need to attach a stringified object to the body of the request, e.g.:
fetch("/echo/json/",
{
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
method: "POST",
body: JSON.stringify({a: 1, b: 2})
})
.then(function(res){ console.log(res) })
.catch(function(res){ console.log(res) })
When using jsfiddle's JSON echo I'd expect to see the object I've sent ({a: 1, b: 2}) back, but this does not happen - chrome devtools doesn't even show the JSON as part of the request, which means that it's not being sent.
With ES2017 async/await support, this is how to POST a JSON payload:
(async () => {
const rawResponse = await fetch('https://httpbin.org/post', {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({a: 1, b: 'Textual content'})
});
const content = await rawResponse.json();
console.log(content);
})();
Can't use ES2017? See #vp_art's answer using promises
The question however is asking for an issue caused by a long since fixed chrome bug.
Original answer follows.
chrome devtools doesn't even show the JSON as part of the request
This is the real issue here, and it's a bug with chrome devtools, fixed in Chrome 46.
That code works fine - it is POSTing the JSON correctly, it just cannot be seen.
I'd expect to see the object I've sent back
that's not working because that is not the correct format for JSfiddle's echo.
The correct code is:
var payload = {
a: 1,
b: 2
};
var data = new FormData();
data.append( "json", JSON.stringify( payload ) );
fetch("/echo/json/",
{
method: "POST",
body: data
})
.then(function(res){ return res.json(); })
.then(function(data){ alert( JSON.stringify( data ) ) })
For endpoints accepting JSON payloads, the original code is correct
I think your issue is jsfiddle can process form-urlencoded request only. But correct way to make json request is pass correct json as a body:
fetch('https://httpbin.org/post', {
method: 'POST',
headers: {
'Accept': 'application/json, text/plain, */*',
'Content-Type': 'application/json'
},
body: JSON.stringify({a: 7, str: 'Some string: &=&'})
}).then(res => res.json())
.then(res => console.log(res));
From search engines, I ended up on this topic for non-json posting data with fetch, so thought I would add this.
For non-json you don't have to use form data. You can simply set the Content-Type header to application/x-www-form-urlencoded and use a string:
fetch('url here', {
method: 'POST',
headers: {'Content-Type':'application/x-www-form-urlencoded'}, // this line is important, if this content-type is not set it wont work
body: 'foo=bar&blah=1'
});
An alternative way to build that body string, rather then typing it out as I did above, is to use libraries. For instance the stringify function from query-string or qs packages. So using this it would look like:
import queryString from 'query-string'; // import the queryString class
fetch('url here', {
method: 'POST',
headers: {'Content-Type':'application/x-www-form-urlencoded'}, // this line is important, if this content-type is not set it wont work
body: queryString.stringify({for:'bar', blah:1}) //use the stringify object of the queryString class
});
After spending some times, reverse engineering jsFiddle, trying to generate payload - there is an effect.
Please take eye (care) on line return response.json(); where response is not a response - it is promise.
var json = {
json: JSON.stringify({
a: 1,
b: 2
}),
delay: 3
};
fetch('/echo/json/', {
method: 'post',
headers: {
'Accept': 'application/json, text/plain, */*',
'Content-Type': 'application/json'
},
body: 'json=' + encodeURIComponent(JSON.stringify(json.json)) + '&delay=' + json.delay
})
.then(function (response) {
return response.json();
})
.then(function (result) {
alert(result);
})
.catch (function (error) {
console.log('Request failed', error);
});
jsFiddle: http://jsfiddle.net/egxt6cpz/46/ && Firefox > 39 && Chrome > 42
2021 answer: just in case you land here looking for how to make GET and POST Fetch api requests using async/await or promises as compared to axios.
I'm using jsonplaceholder fake API to demonstrate:
Fetch api GET request using async/await:
const asyncGetCall = async () => {
try {
const response = await fetch('https://jsonplaceholder.typicode.com/posts');
const data = await response.json();
// enter you logic when the fetch is successful
console.log(data);
} catch(error) {
// enter your logic for when there is an error (ex. error toast)
console.log(error)
}
}
asyncGetCall()
Fetch api POST request using async/await:
const asyncPostCall = async () => {
try {
const response = await fetch('https://jsonplaceholder.typicode.com/posts', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
// your expected POST request payload goes here
title: "My post title",
body: "My post content."
})
});
const data = await response.json();
// enter you logic when the fetch is successful
console.log(data);
} catch(error) {
// enter your logic for when there is an error (ex. error toast)
console.log(error)
}
}
asyncPostCall()
GET request using Promises:
fetch('https://jsonplaceholder.typicode.com/posts')
.then(res => res.json())
.then(data => {
// enter you logic when the fetch is successful
console.log(data)
})
.catch(error => {
// enter your logic for when there is an error (ex. error toast)
console.log(error)
})
POST request using Promises:
fetch('https://jsonplaceholder.typicode.com/posts', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({
// your expected POST request payload goes here
title: "My post title",
body: "My post content."
})
})
.then(res => res.json())
.then(data => {
// enter you logic when the fetch is successful
console.log(data)
})
.catch(error => {
// enter your logic for when there is an error (ex. error toast)
console.log(error)
})
GET request using Axios:
const axiosGetCall = async () => {
try {
const { data } = await axios.get('https://jsonplaceholder.typicode.com/posts')
// enter you logic when the fetch is successful
console.log(`data: `, data)
} catch (error) {
// enter your logic for when there is an error (ex. error toast)
console.log(`error: `, error)
}
}
axiosGetCall()
POST request using Axios:
const axiosPostCall = async () => {
try {
const { data } = await axios.post('https://jsonplaceholder.typicode.com/posts', {
// your expected POST request payload goes here
title: "My post title",
body: "My post content."
})
// enter you logic when the fetch is successful
console.log(`data: `, data)
} catch (error) {
// enter your logic for when there is an error (ex. error toast)
console.log(`error: `, error)
}
}
axiosPostCall()
I have created a thin wrapper around fetch() with many improvements if you are using a purely json REST API:
// Small library to improve on fetch() usage
const api = function(method, url, data, headers = {}){
return fetch(url, {
method: method.toUpperCase(),
body: JSON.stringify(data), // send it as stringified json
credentials: api.credentials, // to keep the session on the request
headers: Object.assign({}, api.headers, headers) // extend the headers
}).then(res => res.ok ? res.json() : Promise.reject(res));
};
// Defaults that can be globally overwritten
api.credentials = 'include';
api.headers = {
'csrf-token': window.csrf || '', // only if globally set, otherwise ignored
'Accept': 'application/json', // receive json
'Content-Type': 'application/json' // send json
};
// Convenient methods
['get', 'post', 'put', 'delete'].forEach(method => {
api[method] = api.bind(null, method);
});
To use it you have the variable api and 4 methods:
api.get('/todo').then(all => { /* ... */ });
And within an async function:
const all = await api.get('/todo');
// ...
Example with jQuery:
$('.like').on('click', async e => {
const id = 123; // Get it however it is better suited
await api.put(`/like/${id}`, { like: true });
// Whatever:
$(e.target).addClass('active dislike').removeClass('like');
});
Had the same issue - no body was sent from a client to a server.
Adding Content-Type header solved it for me:
var headers = new Headers();
headers.append('Accept', 'application/json'); // This one is enough for GET requests
headers.append('Content-Type', 'application/json'); // This one sends body
return fetch('/some/endpoint', {
method: 'POST',
mode: 'same-origin',
credentials: 'include',
redirect: 'follow',
headers: headers,
body: JSON.stringify({
name: 'John',
surname: 'Doe'
}),
}).then(resp => {
...
}).catch(err => {
...
})
This is related to Content-Type. As you might have noticed from other discussions and answers to this question some people were able to solve it by setting Content-Type: 'application/json'. Unfortunately in my case it didn't work, my POST request was still empty on the server side.
However, if you try with jQuery's $.post() and it's working, the reason is probably because of jQuery using Content-Type: 'x-www-form-urlencoded' instead of application/json.
data = Object.keys(data).map(key => encodeURIComponent(key) + '=' + encodeURIComponent(data[key])).join('&')
fetch('/api/', {
method: 'post',
credentials: "include",
body: data,
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
})
The top answer doesn't work for PHP7, because it has wrong encoding, but I could figure the right encoding out with the other answers. This code also sends authentication cookies, which you probably want when dealing with e.g. PHP forums:
julia = function(juliacode) {
fetch('julia.php', {
method: "POST",
credentials: "include", // send cookies
headers: {
'Accept': 'application/json, text/plain, */*',
//'Content-Type': 'application/json'
"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" // otherwise $_POST is empty
},
body: "juliacode=" + encodeURIComponent(juliacode)
})
.then(function(response) {
return response.json(); // .text();
})
.then(function(myJson) {
console.log(myJson);
});
}
It might be useful to somebody:
I was having the issue that formdata was not being sent for my request
In my case it was a combination of following headers that were also causing the issue and the wrong Content-Type.
So I was sending these two headers with the request and it wasn't sending the formdata when I removed the headers that worked.
"X-Prototype-Version" : "1.6.1",
"X-Requested-With" : "XMLHttpRequest"
Also as other answers suggest that the Content-Type header needs to be correct.
For my request the correct Content-Type header was:
"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8"
So bottom line if your formdata is not being attached to the Request then it could potentially be your headers. Try bringing your headers to a minimum and then try adding them one by one to see if your problem is resolved.
If your JSON payload contains arrays and nested objects, I would use URLSearchParams and jQuery's param() method.
fetch('/somewhere', {
method: 'POST',
body: new URLSearchParams($.param(payload))
})
To your server, this will look like a standard HTML <form> being POSTed.
You could do it even better with await/async.
The parameters of http request:
const _url = 'https://jsonplaceholder.typicode.com/posts';
let _body = JSON.stringify({
title: 'foo',
body: 'bar',
userId: 1,
});
const _headers = {
'Content-type': 'application/json; charset=UTF-8',
};
const _options = { method: 'POST', headers: _headers, body: _body };
With clean async/await syntax:
const response = await fetch(_url, _options);
if (response.status >= 200 && response.status <= 204) {
let data = await response.json();
console.log(data);
} else {
console.log(`something wrong, the server code: ${response.status}`);
}
With old fashion fetch().then().then():
fetch(_url, _options)
.then((res) => res.json())
.then((json) => console.log(json));
**//POST a request**
const createTodo = async (todo) => {
let options = {
method: "POST",
headers: {
"Content-Type":"application/json",
},
body: JSON.stringify(todo)
}
let p = await fetch("https://jsonplaceholder.typicode.com/posts", options);
let response = await p.json();
return response;
}
**//GET request**
const getTodo = async (id) => {
let response = await fetch('https://jsonplaceholder.typicode.com/posts/' + id);
let r = await response.json();
return r;
}
const mainFunc = async () => {
let todo = {
title: "milan7",
body: "dai7",
userID: 101
}
let todor = await createTodo(todo);
console.log(todor);
console.log(await getTodo(5));
}
mainFunc()
I think that, we don't need parse the JSON object into a string, if the remote server accepts json into they request, just run:
const request = await fetch ('/echo/json', {
headers: {
'Content-type': 'application/json'
},
method: 'POST',
body: { a: 1, b: 2 }
});
Such as the curl request
curl -v -X POST -H 'Content-Type: application/json' -d '#data.json' '/echo/json'
In case to the remote serve not accept a json file as the body, just send a dataForm:
const data = new FormData ();
data.append ('a', 1);
data.append ('b', 2);
const request = await fetch ('/echo/form', {
headers: {
'Content-type': 'application/x-www-form-urlencoded'
},
method: 'POST',
body: data
});
Such as the curl request
curl -v -X POST -H 'Content-type: application/x-www-form-urlencoded' -d '#data.txt' '/echo/form'
You only need to check if response is ok coz the call not returning anything.
var json = {
json: JSON.stringify({
a: 1,
b: 2
}),
delay: 3
};
fetch('/echo/json/', {
method: 'post',
headers: {
'Accept': 'application/json, text/plain, */*',
'Content-Type': 'application/json'
},
body: 'json=' + encodeURIComponent(JSON.stringify(json.json)) + '&delay=' + json.delay
})
.then((response) => {if(response.ok){alert("the call works ok")}})
.catch (function (error) {
console.log('Request failed', error);
});
// extend FormData for direct use of js objects
Object.defineProperties(FormData.prototype, {
load: {
value: function (d) {
for (var v in d) {
this.append(v, typeof d[v] === 'string' ? d[v] : JSON.stringify(d[v]));
}
}
}
})
var F = new FormData;
F.load({A:1,B:2});
fetch('url_target?C=3&D=blabla', {
method: "POST",
body: F
}).then( response_handler )
you can use fill-fetch, which is an extension of fetch. Simply, you can post data as below:
import { fill } from 'fill-fetch';
const fetcher = fill();
fetcher.config.timeout = 3000;
fetcher.config.maxConcurrence = 10;
fetcher.config.baseURL = 'http://www.github.com';
const res = await fetcher.post('/', { a: 1 }, {
headers: {
'bearer': '1234'
}
});