How to send array in params using Alamofire multipart - ios

Question

I am using Alamofire for uploading image and file to the server. But I am facing issue to send an array in parameters with the image. But when I send an array in params it converts the array in JSON string. But I want to send an array in params, not JSON string. I have searched a lot and did not find any solution. So please tell me what's wrong in my code. I am using below code:
let params = ["id":"112","arrayParam":["1232","12344","14325"]]
let url = www.khxjjhdfsj.com/hsdgs
let headers: HTTPHeaders = [
/* "Authorization": "your_access_token", in case you need authorization header */
"Content-type": "multipart/form-data"
]
Alamofire.upload(multipartFormData: { (multipartFormData) in
for (key, value) in params
{
multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: key as String)
}
if let data = imageData
{
multipartFormData.append(data, withName: "file", fileName: fileName, mimeType: "image/png")
}
if let data = pdfData
{
multipartFormData.append(data, withName: "file", fileName: fileName, mimeType:"application/pdf")
}
}, usingThreshold: UInt64.init(), to: url, method: .post, headers: headers) { (result) in
switch result{
case .success(let upload, _, _):
upload.responseJSON { response in
print("Succesfully uploaded")
if let err = response.error
{
onError?(err)
return
}
}
case .failure(let error):
print("Error in upload: \(error.localizedDescription)")
onError?(error)
}
}

Answer 1

You need to pass image parameter along with your other request parameters. Pass your array parameters like this in below code:
Alamofire.upload(
multipartFormData: { multipartFormData in
// Pass your image parameter in imgObj
if let imageData = UIImageJPEGRepresentation(imgObj, 1) {
multipartFormData.append(UIImagePNGRepresentation(imgObj)!, withName: "profile_image", fileName: "THDC", mimeType: "image/png")
}
// Send other request parameters
for (key, value) in yourArray {
multipartFormData.append((value as! String).data(using: .utf8)!, withName: key)
}
},to: YourURL,headers:[:],
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON { response in
SVProgressHUD.dismiss()
debugPrint("SUCCESS RESPONSE: \(response)")
if let dicObj = response.result.value as? NSDictionary {
print(dicObj)
}
}
case .failure(let encodingError):
SVProgressHUD.dismiss()
print("ERROR RESPONSE: \(encodingError)")
}
}
)

Answer 2

This is the static way to upload arrays to Alamofire.
hope this may useful to you.
Alamofire.upload(multipartFormData: { (multipartFormData) in
let imageData = UIImageJPEGRepresentation(imageUpload!, 0.5)
multipartFormData.append(imageData!, withName: "profile_file", fileName: "file.png", mimeType: "image/jpg")
for (key, value) in parameters {
if (value as AnyObject).isKind(of: NSMutableArray.self)
{
let arrayObj = value as! NSMutableArray
//let data2 = NSData(bytes: &arrayObj, length: arrayObj.count)
let count : Int = arrayObj.count
for i in 0 ..< count
{
let value = arrayObj[i] as! Int
let valueObj = String(value)
let keyObj = key + "[" + String(i) + "]"
multipartFormData.append(valueObj.data(using: String.Encoding.utf8)!, withName: keyObj)
}
}
else{
var valueStr = String()
if let param = value as? String{
valueStr = param
}else{
let valueInt = value as! Int
valueStr = String(valueInt)
}
multipartFormData.append((valueStr).data(using: String.Encoding.utf8)!, withName: key)
}
}
}, to: urlString, encodingCompletion: { (encodingResult) in
print("=====encodingResult=========",encodingResult)
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON(completionHandler: { (response) -> Void in
switch response.result {
case .success(let JSON):
print("JSON: \(JSON)")
onCompletion(JSON as? NSDictionary, nil)
case .failure(let error):
print(error)
}
})
case .failure(let encodingError):
print(encodingError);
}
})

Answer 3

You need to append array with multipart data on the same key required, like in your code you need to change only given line of code:
for (key, value) in params
{
// check the key on which key array is coming
if key == "arrayParam" {
let arrData = try! JSONSerialization.data(withJSONObject: value, options: .prettyPrinted)
multipartFormData.append(arrData, withName: key as String)
}
else {
multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: key as String)
}
}
Rest will be the same.