Marcus Marcus - 6 months ago 55
React JSX Question

How to upload file to amazon s3 bucket using axios?

first of all, I am very very new to react. I am trying to upload a file to my amazon S3 bucket using axios.
I get the signature url correctly but I don't know how to continue.. I tried this but it doesn't work.

The error I get is the following:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

import React, { Component } from 'react'
import Dropzone from 'react-dropzone'
import aws from 'aws-sdk'
import axios from 'axios'

export default class ImageAWS extends Component{


console.log('uploadFile: ')
const file = files[0]

accessKeyId: 'xxxxxxxxx',
secretAccessKey: 'xxxxxxxx'

var s3 = new aws.S3();

var params = {
Bucket: 'xxx',
Expires: 60,
ContentType: file.type

s3.getSignedUrl('putObject', params, function(err, signedUrl) {
if (err) {
return err;
} else {

var instance = axios.create();

instance.put(signedUrl, file, {headers: {'Content-Type': file.type}})
.then(function (result) {
.catch(function (err) {
return signedUrl;


render () {
return (
Images Component
<Dropzone onDrop={this.uploadFile.bind(this)} />



AWSAccessKeyId=xxxxxxxxxxxxxxxxxx&Content-Type=image%2Fjpeg&Expires=1502894764&Signature=FqAccUimhyrLgLBldVy%2Fkyx2Xmc%3D HTTP/1.1


User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate, br

Access-Control-Request-Method: PUT

Access-Control-Request-Headers: access-control-allow-headers,access-control-allow-methods,access-control-allow-origin

Origin: http://localhost:8080

Connection: keep-alive

HTTP/1.1 403 Forbidden

x-amz-request-id: 4282B87BA935EF9A

x-amz-id-2: jWOwOQ/7BCzvw1xPmJroOzUBhbCmpfGx5HCPaPUvMoYTFMrlhoG5wN902B1brZ5cjYnKHMLWmpQ=

Content-Type: application/xml

Date: Wed, 16 Aug 2017 14:45:05 GMT

Server: AmazonS3

Content-Length: 514

<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessForbidden</Code><Message>CORSResponse: This CORS request is not allowed. This is usually because the evalution of Origin, request method / Access-Control-Request-Method or Access-Control-Request-Headers are not whitelisted by the resource's CORS spec.</Message><Method>PUT</Method><ResourceType>OBJECT</ResourceType><RequestId>4282B87BA935EF9A</RequestId><HostId>jWOwOQ/7BCzvw1xPmJroOzUBhbCmpfGx5HCPaPUvMoYTFMrlhoG5wN902B1brZ5cjYnKHMLWmpQ=</HostId></Error>

Answer Source

You'll need to add the required CORS headers to your dev server. Read about CORS. Depending on your development server, search for the proper way to add response headers. Then, add the following headers to every response:

"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, PATCH, OPTIONS",
"Access-Control-Allow-Headers": "X-Requested-With, content-type, Authorization"

This will enable to request data from other websites on the web. Make sure you add them to the development version only(I assume you are learning, so that's OK). On production, you'll need to limit the "Access-Control-Allow-Origin": "*", to specific urls.

Further reading:

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