base64EncodedString returns undesired backslashes [duplicate] - ios

Question

This question already has an answer here:
Alamofire 5 Escaping Forward Slashes
(1 answer)
Closed 4 years ago.
I am encoding a JPEG image to Base64 for sending to my app's backend using Alamofire.
When I inspect the sent string using Charles Proxy I find out that the encoded string escapes all slashes (/) with a backslash (becoming \/). For example, the string data:image/jpeg;base64, at the beginning becomes:
data:image\/jpeg;base64,
As all slashes in the Base64 encoded string, which renders the encoded string unusable.
Here is the code I use for encoding the image. The variable imageBase64 receives the string with the escaped slashes.
if let image = image {
let croppedImage = image.af_imageAspectScaled(toFill: CGSize(width: 500, height: 500))
if let imageData = UIImageJPEGRepresentation(croppedImage, 0.8) {
let imageBase64 = "data:image/jpeg;base64,\(imageData.base64EncodedString())"
base64dict["base64"] = imageBase64 as AnyObject
bodyParams["AVATAR"] = base64dict as AnyObject
} else {
base64dict["base64"] = "null" as AnyObject
bodyParams["AVATAR"] = base64dict as AnyObject
}
}
When I send the imageData string to the backend using Alamofire, the json sent in the request body becomes like this:
{
"AVATAR": {
"base64": "data:image\/jpeg;base64,\/9j\/4AAQSkZJRgABAQAAkACQAAD\/4QC..."
}
}
where all slashes were escaped.
The code I use for making the request is the following:
Alamofire.request(finalURL,
method: method,
parameters: bodyParams,
encoding: JSONEncoding.default,
headers: ["Content-Type": "application/json"])
.responseJSON { response in
// process response
}

Answer 1

I ended using the custom JSONEncoder posted by csim at this answer: Alamofire 5 Escaping Forward Slashes.
I had to create a new class, using the code provided by csim, and then the Alamofire request became:
Alamofire.request(finalURL,
method: method,
parameters: bodyParams,
encoding: JSONEncodingWithoutEscapingSlashes.default,
headers: ["Content-Type": "application/json"])
.responseJSON { response in
// process response
}