问题
I am uploading image with multipart form data using Alamofire but getting some problem while i am passing an array as parameter.
As per request i need to pass all data into letter. Here is how i am doing.
let data = try! JSONSerialization.data(withJSONObject: arrSelectedRecipientsID, options: .prettyPrinted)
let jsonString = String(data: data, encoding: .utf8)!
let paramArr : [String : Any] = [
"message" : txtvwMessage.text!,
"status": "draft",
"recipient_ids": jsonString
]
let parameter : [String : Any] = ["letter" : paramArr]
let accesstoken = Utilities.retriveValueFromDefault(forKey: UDKey.kUserAuthentication_Token) as String
let client = Utilities.retriveValueFromDefault(forKey: UDKey.kUserClient) as String
let uid = Utilities.retriveValueFromDefault(forKey: UDKey.kUserUID) as String
let headersInfo : HTTPHeaders = [ "Content-Type" : "multipart/form-data",
"Accept" : "application/json",
"access-token" : accesstoken,
"client" : client,
"uid" : uid
]
fileUploadWithParameter(Constant.ServerAPI.kPostLetters, images: letterImage, header: headersInfo, parameters: parameter, success: { (response) in
print(response)
}) { (progress) in
}
Here is Alamofire request method.
func fileUploadWithParameter(_ url: String,images:NSMutableArray,header : [String : String], parameters: [String:Any], success:@escaping (NSDictionary)->(),progressHandler:@escaping(_ progress: Double)->Void) {
Alamofire.upload(multipartFormData: { multipartFormData in
for i in 0..<images.count {
let rotatedImage = images[i] as! UIImage
if let imgData = UIImageJPEGRepresentation(rotatedImage, 0.8) {
multipartFormData.append(imgData, withName: "letter[photos]",fileName: "0\(i).jpg", mimeType: "image/jpg")
}
}
for (key, value) in parameters {
//multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key )
let paramsData:Data = NSKeyedArchiver.archivedData(withRootObject: value)
multipartFormData.append(paramsData, withName: key)
}
}, to: url,
method:.post,
headers:header) { (result) in
print("\n\n\nRequest URL :- \(url)\nParameters :- \(parameters)")
switch result {
case .success(let upload, _, _):
upload.responseJSON { response in
if response.error != nil {
print("Error :- \((response.error?.localizedDescription)!)\n\n\n")
}
if let jsonDict = response.result.value as? NSDictionary {
print("Response :- \(jsonDict)\n\n\n")
} else {
print("Error :- \(Constant.ErrorMessage.kCommanError)\n\n\n")
}
}
case .failure(let encodingError):
print("Error :- \(encodingError.localizedDescription)\n\n\n")
}
}
}
Postman works well so can someone please help me where i am doing wrong.
API expected The proper json should be
{
"letter":
{
"message": "Type your message here...!!!",
"recipient_ids": [183, 184],
"status": "draft"
}
}
API is in ruby on rails and it says i am sending string. Please help me to find out what is issue.
回答1:
Finally get it done with separate append in request. Here is how you can pass an array in multipart form data request.
Alamofire.upload(multipartFormData: { multipartFormData in
for i in 0..<self.letterImage.count {
let rotatedImage = self.letterImage[i] as! UIImage
if let imgData = UIImageJPEGRepresentation(rotatedImage, 0.8) {
multipartFormData.append(imgData, withName: "letter[photos][]",fileName: "0\(i).jpg", mimeType: "image/jpg")
}
}
multipartFormData.append("\(message)".data(using: String.Encoding.utf8)!, withName: "letter[message]")
multipartFormData.append("draft".data(using: String.Encoding.utf8)!, withName: "letter[status]")
for (_,value) in self.arrSelectedRecipientsID.enumerated() {
multipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: "letter[recipient_ids][]")
}
}
回答2:
you can append array of like below
for image attachments
for Attachment in Attachments
{
if let pic = Attachment{
let randome = arc4random()
let data = UIImageJPEGRepresentation(pic, 0.8)
MultipartFormData.append(data!, withName: "letter[photos][]", fileName: "randome\(randome).jpg", mimeType: "image/jpg")
}
}
for parameters
for (key,value) in params
{
MultipartFormData.append("\(value)".data(using: String.Encoding.utf8)!, withName: "\(key)")
}
回答3:
Jus need to change only given line of code:
for (key, value) in parameters {
if key == "letter" {
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.
your method in updated form: func fileUploadWithParameter(_ url: String,images:NSMutableArray,header : [String : String], parameters: [String:Any], success:@escaping (NSDictionary)->(),progressHandler:@escaping(_ progress: Double)->Void) {
Alamofire.upload(multipartFormData: { multipartFormData in
for i in 0..<images.count {
let rotatedImage = images[i] as! UIImage
if let imgData = UIImageJPEGRepresentation(rotatedImage, 0.8) {
multipartFormData.append(imgData, withName: "letter[photos]",fileName: "0\(i).jpg", mimeType: "image/jpg")
}
}
for (key, value) in parameters {
//multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key )
let paramsData:Data = NSKeyedArchiver.archivedData(withRootObject: value)
multipartFormData.append(paramsData, withName: key)
}
for (key, value) in parameters {
if key == "letter" {
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)
}
}
}, to: url,
method:.post,
headers:header) { (result) in
print("\n\n\nRequest URL :- \(url)\nParameters :- \(parameters)")
switch result {
case .success(let upload, _, _):
upload.responseJSON { response in
if response.error != nil {
print("Error :- \((response.error?.localizedDescription)!)\n\n\n")
}
if let jsonDict = response.result.value as? NSDictionary {
print("Response :- \(jsonDict)\n\n\n")
} else {
//print("Error :- \(Constant.ErrorMessage.kCommanError)\n\n\n")
print("Errfdc")
}
}
case .failure(let encodingError):
print("Error :- \(encodingError.localizedDescription)\n\n\n")
}
}
}
来源：https://stackoverflow.com/questions/51260292/how-to-append-array-in-multipart-form-data-with-alamofire