Send text and image with HTTP POST in swift

Question

I'm trying to upload image with text message to php server through HTTP POST but the sent message is reached to server as null

@IBOutlet var image: UIImageView!
var CUSTOMER_KEY = "dkeqnq9fmkhq"
var msg = "The first msg"

override func viewDidLoad() {
    super.viewDidLoad()

}


@IBAction func selectVideo(sender: AnyObject) {

    var videoPickerController = UIImagePickerController()
    videoPickerController.delegate = self

    videoPickerController.sourceType = .SavedPhotosAlbum
    videoPickerController.mediaTypes =  [kUTTypeMovie as String]



    self.presentViewController(videoPickerController, animated: true, completion: nil)
}
@IBAction func selectPicture(sender: AnyObject) {

    let ImagePicker = UIImagePickerController()
    ImagePicker.delegate = self
    ImagePicker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

    self.presentViewController(ImagePicker, animated: true, completion: nil)


}



func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

    image.image = info[UIImagePickerControllerOriginalImage] as? UIImage
    self.dismissViewControllerAnimated(true, completion: nil)
}



@IBAction func upload_request(sender: AnyObject) {
    UploadRequest()
}



func UploadRequest()
{
    let comURL = "myurlhere?customer_key=dkeqnq9fmkhq&msg=MSGHere"


    let sendURL:NSURL = NSURL(string: comURL.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!)!




    let request = NSMutableURLRequest(URL: sendURL)

    request.HTTPMethod = "POST"



    let boundary = generateBoundaryString()


    request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")


    if (image.image == nil)
    {
        return
    }

    let image_data = UIImagePNGRepresentation(image.image!)


    if(image_data == nil)
    {
        return
    }


    let body = NSMutableData()

    let newRandomName = randomStringWithLength(32)
    let fname = (newRandomName as String) + ".png"
    let mimetype = "image/png"



    print ("New File Name:" + (newRandomName as String))

    body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    body.appendData("Content-Disposition:form-data; name=\"test\"\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    body.appendData("hi\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)



    body.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    body.appendData("Content-Disposition:form-data; name=\"file\"; filename=\"\(fname)\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    body.appendData("Content-Type: \(mimetype)\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
    body.appendData(image_data!)
    body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


    body.appendData("--\(boundary)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)



    request.HTTPBody = body



    let session = NSURLSession.sharedSession()


    let task = session.dataTaskWithRequest(request) {
        (
        let data, let response, let error) in

        guard let _:NSData = data, let _:NSURLResponse = response  where error == nil else {
            print("error")
            return
        }

        let dataString = NSString(data: data!, encoding: NSUTF8StringEncoding)

        print(dataString)

    }

    task.resume()


}


func generateBoundaryString() -> String
{
    return "Boundary-\(NSUUID().UUIDString)"
}

func randomStringWithLength (len : Int) -> NSString {

    let letters : NSString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

    var randomString : NSMutableString = NSMutableString(capacity: len)

    for (var i=0; i < len; i++){
        var length = UInt32 (letters.length)
        var rand = arc4random_uniform(length)
        randomString.appendFormat("%C", letters.characterAtIndex(Int(rand)))
    }

    return randomString
}

Also If i want to make the same thing to send image, video and text message at the same time how I can do that to take video path after selected it and upload it to server through HTTP POST?

score 0 · Answer 1 · answered Jun 27 '16 at 10:56

Use Alamofire framework for all types of request. Its simple and easy to implement

Alamofire.upload(.POST, requestURL, headers: nil, multipartFormData: { multipartFormData in

        if image != nil
        {
            if let imageData = UIImageJPEGRepresentation(image!, 1)
            {
                multipartFormData.appendBodyPart(data: imageData, name: "file", fileName: "profile.jpg", mimeType: "image/jpeg")
            }
        }

        for (key, value) in params
        {
            multipartFormData.appendBodyPart(data: value.dataUsingEncoding(NSUTF8StringEncoding)!, name: key)
        }
        },

        encodingMemoryThreshold: Manager.MultipartFormDataEncodingMemoryThreshold,
        encodingCompletion: { encodingResult in
            switch encodingResult {
            case .Success(let upload, _, _):
                upload.responseJSON { response in
                    success(response: response.result.value)
                }
            case .Failure(let error):
                failure(error: error)
            }
    })

score 0 · Answer 2 · edited May 23 '17 at 12:14

Use Alamofire, then use this class as request manager. This urlRequestWithComponents function reference from this answer

class MultiFormRequest {

        private func urlRequestWithComponents(url:NSURL, parameters:[String:AnyObject], imageData:(key:String,data:NSData)?) -> (URLRequestConvertible, NSData) {

            // create url request to send
            let mutableURLRequest = NSMutableURLRequest(URL: url)
            mutableURLRequest.HTTPMethod = Alamofire.Method.POST.rawValue
            let boundaryConstant = "myRandomBoundary12345";
            let contentType = "multipart/form-data;boundary="+boundaryConstant
            mutableURLRequest.setValue(contentType, forHTTPHeaderField: "Content-Type")

            // create upload data to send
            let uploadData = NSMutableData()

            if let imageData = imageData {
                // add image
                uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
                uploadData.appendData("Content-Disposition: form-data; name=\"\(imageData.key)\"; filename=\"\(imageData.key).jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
                uploadData.appendData("Content-Type: image/png\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
                uploadData.appendData(imageData.data)
            }
            // add parameters
            for (key, value) in parameters {
                uploadData.appendData("\r\n--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
                uploadData.appendData("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n\(value)".dataUsingEncoding(NSUTF8StringEncoding)!)
            }
            uploadData.appendData("\r\n--\(boundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)



            // return URLRequestConvertible and NSData
            return (Alamofire.ParameterEncoding.URL.encode(mutableURLRequest, parameters: nil).0, uploadData)
        }

        func requestWithParams(url:NSURL,
                               paramsDic:[String:AnyObject],
                               imageData:(key:String,data:NSData)?,
                               succesBlock:((result:AnyObject?)->Void)?,
                               failBlock:((error:NSError?)->Void)?)  {


            let urlRequest = urlRequestWithComponents(url, parameters: paramsDic, imageData: imageData)
            UIApplication.sharedApplication().networkActivityIndicatorVisible = true

            Alamofire.upload(urlRequest.0, data: urlRequest.1)
                .responseJSON(completionHandler: { (response) in
                    UIApplication.sharedApplication().networkActivityIndicatorVisible = false

                    switch response.result {
                    case .Success:
                        succesBlock?(result:response.result.value)

                    case .Failure:
                        failBlock?(error:response.result.error)
                    }

                })
        }
    }

I used this framework and it's working now but I want to know what is the maximum size can support it ? — Samah Ahmed, Jun 27 '16 at 13:35

score 0 · Answer 3 · answered Jul 20 '16 at 13:06

You can easily send text to server like this:

  func sendText () {

    var url:String = "Your url"

    var param = ["name": self.nameTextField.text!, "otherparameter":self.otherparameterTextField.text!, "otherparameter2":self.otherparameter2TextField.text!]

    Alamofire.request(.POST, url , parameters: param).responseJSON { response in

        if let data = response.result.value {

            print(data)
        }

    }

}

Send text and image with HTTP POST in swift

3 Answers3