Uploading multiple images with other parameters in Swift - ios

Question

Right now I've been uploading only one image to a server on a server side script through the code given below. Now I have an array of UIImage, I want to know how can I use UIImageJPEGRepresentation(myImageView.image!, 0.1) to post all the images in a UIImageView array?
func uploadImage()
{
let postPictureUrl = NSURL(string: "http://www.23look.com/merchant/verify")
let request = NSMutableURLRequest(URL: postPictureUrl!)
request.HTTPMethod="POST"
let param=[
"mer_name" : shopNameUITF.text!,
"mer_tel" : shopTelephoneUITF.text!,
"mer_address" : shopAddressUITF.text!,
"lat" : "39.6892",
"lng" : "115.9239",
"token": KeychainWrapper.stringForKey("tokenValue")!,
"mer_type": "smalll"
]
let abc = KeychainWrapper.stringForKey("tokenValue")!
let boundary = generateBoundaryString()
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
let imageData = UIImageJPEGRepresentation(myImageView.image!, 0.1)
if imageData==nil { print("image data is nil"); return }
request.HTTPBody = createBodyWithParameters(param, filePathKey: "mer_license", imageDataKey: imageData!, boundary: boundary)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error=\(error)")
return
}
//You can print out response object
print("***** response = \(response)")
// Print out reponse body
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("**** response data = \(responseString!)")
do {
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
dispatch_async(dispatch_get_main_queue(), {
print(NSString(data: data!, encoding:NSUTF8StringEncoding)!)
print(json)
})
} catch let err {
print(err)
}
}
task.resume()
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().UUIDString)"
}
func createBodyWithParameters(parameters:[String:String]?, filePathKey: String?, imageDataKey:NSData, boundary: String) -> NSData {
var body=NSMutableData()
if parameters != nil {
for(key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
let filename = "user-profile.jpg"
let mimetype = "image/jpg"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
body.appendString("Content Type: \(mimetype)\r\n\r\n")
body.appendData(imageDataKey)
body.appendString("\r\n")
body.appendString("-\(boundary)-\r\n")
return body
}
It takes following parameters:
mer_name - String
mer_tel - String
mer_address - string
lng - string
lat - string
mer_licence - file type (This is where my images will be uploaded)
token - string
mer_type - string

Answer 1

You should do changes in createBodyWithParameters like below.........
When you have multiple images...
func createBodyWithParameters(parameters: NSMutableDictionary?,boundary: String) -> NSData {
let body = NSMutableData()
if parameters != nil {
for (key, value) in parameters! {
if(value is String || value is NSString){
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
else if(value is [UIImage]){
var i = 0;
for image in value as! [UIImage]{
let filename = "image\(i).jpg"
let data = UIImageJPEGRepresentation(image,1);
let mimetype = mimeTypeForPath(filename)
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"; filename=\"\(filename)\"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.appendData(data!)
body.appendString("\r\n")
i++;
}
}
}
}
body.appendString("--\(boundary)--\r\n")
// NSLog("data %#",NSString(data: body, encoding: NSUTF8StringEncoding)!);
return body
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().UUIDString)"
}
func mimeTypeForPath(path: String) -> String {
let pathExtension = path.pathExtension
var stringMimeType = "application/octet-stream";
if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension!, nil)?.takeRetainedValue() {
if let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() {
stringMimeType = mimetype as NSString as String
}
}
return stringMimeType;
}
func createRequest (param : NSMutableDictionary , strURL : String) -> NSURLRequest {
let boundary = generateBoundaryString()
let url = NSURL(string: strURL)
let request = NSMutableURLRequest(URL: url!)
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
request.HTTPBody = createBodyWithParameters(param, boundary: boundary)
return request
}

Answer 2

doOnMain {
Loading.sharedInstance.startloading()
}
let url = NSURL(string:"URL")
let request = NSMutableURLRequest(url: url! as URL)
request.httpMethod = "POST"
let headers = ["Accept-Language": "en"]
request.allHTTPHeaderFields = headers
let boundary = generateBoundaryString()
//define the multipart request type
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
if (imgRefund.image == nil){
return
}
// First Image
let image_data = imgRefund.image!.pngData()
if(image_data == nil){
return
}
// Second Image
let image_data1 = imgRefund1.image!.pngData()
if(image_data1 == nil){
return
}
let body = NSMutableData()
let fname = "filename"
let fname1 = "filename1"
let mimetype = "image/png"
let parameters = ["key":"value","key":"value"]
if parameters != nil {
for (key, value) in parameters {
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("\(value)\r\n".data(using: String.Encoding.utf8)!)
}
}
// First Image
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"test\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("hi\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"parameter\"; filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!) // paramenter name
body.append("Content-Type: \(mimetype)\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append(image_data!)
body.append("\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)--\r\n".data(using: String.Encoding.utf8)!)
// Second Image
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"test\"\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append("hi\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
body.append("Content-Disposition:form-data; name=\"parameter1\"; filename=\"\(fname1)\"\r\n".data(using: String.Encoding.utf8)!) // paramenter name 1
body.append("Content-Type: \(mimetype)\r\n\r\n".data(using: String.Encoding.utf8)!)
body.append(image_data1!)
body.append("\r\n".data(using: String.Encoding.utf8)!)
body.append("--\(boundary)--\r\n".data(using: String.Encoding.utf8)!)
request.httpBody = body as Data
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest) {
(
data, response, error) in
guard let _:NSData = data! as NSData, let _:URLResponse = response, error == nil else {
print("error")
return
}
let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("****** response data = \(responseString!)")
do {
let json = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary
print("****** response json = \(json!)")
if(json?.value(forKey: "status") as! Int == 200){
print(json)
}
else{
}
}catch{
print(error)
}
}
task.resume()
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().uuidString)"
}