How to upload local device image using Axios to S3 bucket - react-native

Question

I need to upload an image directly to an S3 bucket. I am using react native, and react-native-image-picker to select a photo. This returns a local image uri. Here is my code right now.
ImagePicker.showImagePicker(options, response => {
var bodyFormData = new FormData(); // If I don't use FormData I end up
// uploading the json not an image
bodyFormData.append('image', {
uri: response.uri, // uri rather than data to avoid loading into memory
type: 'image/jpeg'
});
const uploadImageRequest = {
method: 'PUT',
url: presignedS3Url,
body: bodyFormData,
headers: {
'Content-Type: 'multipart/form-data'
}
};
axios(uploadImageRequest);
});
This almost works.. when I check my S3 bucket I have a file thats nearly an image. It has the following format
--Y_kogEdJ16jhDUS9qhn.KjyYACKZGEw0gO-8vPw3BcdOMIrqVtmXsdJOLPl6nKFDJmLpvj^M
content-disposition: form-data; name="image"^M
content-type: image/jpeg^M
^M
<Image data>
If I manually go in and delete the header, then I have my image! However, I need to be uploading an image directly to S3, which clients will be grabbing and expecting to already be in a proper image format.
I can make this work using response.data and decoding to a string and uploading that directly, but for the sake of memory I'd rather not do this.

Answer 1

Upload image to S3 from client using AJAX with presigned URL
It's been a while since you posted your question so I guess you already found a solution, but anyway... I was trying to do the same, i.e. upload an image to S3 using axios, but I just wasn't able to make it work properly. Fortunately, I found out that we can easily do the trick with plain AJAX:
const xhr = new XMLHttpRequest();
xhr.open('PUT', presignedS3Url);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
console.log('Image successfully uploaded to S3');
} else {
console.log('Error while sending the image to S3.\nStatus:', xhr.status, "\nError text: ", xhr.responseText);
}
}
}
xhr.setRequestHeader('Content-Type', 'image/jpeg');
xhr.send({ uri: imageUri, type: 'image/jpeg', name: fileName});
This code is taken from this really useful article which borrows from this blog.