無法使用Alamofire通過服務器上傳音頻文件

Question

class VoiceRecogViewController: UIViewController, AVAudioPlayerDelegate, AVAudioRecorderDelegate {


var audioPlayer: AVAudioPlayer?
var audioRecorder: AVAudioRecorder?
var error: NSError?
var soundFileURL: URL?
var soundFilePath: String = ""
var data : NSData?

@IBOutlet weak var startRocordButton: UIButton!
@IBOutlet weak var stopRecordButton: UIButton!
@IBOutlet weak var playRecordButton: UIButton!
@IBOutlet weak var continueButton: UIButton!

override func viewDidLoad() {

    super.viewDidLoad()
    playRecordButton.isEnabled = false
    stopRecordButton.isEnabled = false

    let dirPaths =
        NSSearchPathForDirectoriesInDomains(.documentDirectory,
                                            .userDomainMask, true)

    let docsDir = dirPaths[0]
    soundFilePath = (docsDir as NSString).appendingPathComponent("sound.wav")
    soundFileURL = URL(fileURLWithPath: soundFilePath)

    let recordSettings = [AVEncoderAudioQualityKey: AVAudioQuality.min.rawValue,
                          AVEncoderBitRateKey: 16,
                          AVNumberOfChannelsKey: 2,
                          AVSampleRateKey: 44100.0] as [String : Any]

    let audioSession = AVAudioSession.sharedInstance()
    try! audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, with: [])
    try! audioSession.setActive(true)

    if let err = error {
        print("audioSession error: \(err.localizedDescription)")
    }

    do {
        audioRecorder = try AVAudioRecorder(url: soundFileURL!,
                                            settings: recordSettings as [String : AnyObject])
    } catch {
        audioRecorder = nil
    }

    audioRecorder?.prepareToRecord()

    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


@IBAction func startRecord(_ sender: AnyObject) {
    if audioRecorder?.isRecording == false {
        playRecordButton.isEnabled = false
        startRocordButton.isEnabled = false
        stopRecordButton.isEnabled = true
        audioRecorder?.record()
    }
}

@IBAction func stopRecord(_ sender: AnyObject) {
    stopRecordButton.isEnabled = false
    playRecordButton.isEnabled = true
    startRocordButton.isEnabled = true

    if audioRecorder?.isRecording == true {
        audioRecorder?.stop()
    } else {
        audioPlayer?.stop()
    }
}

@IBAction func playRecord(_ sender: AnyObject) {
    if audioRecorder?.isRecording == false {
        stopRecordButton.isEnabled = true
        startRocordButton.isEnabled = false
    }

    do {
        try audioPlayer = AVAudioPlayer(contentsOf: soundFileURL!)
        audioPlayer?.delegate = self
        audioPlayer?.prepareToPlay()
        audioPlayer?.play()
    } catch {
        print("audioPlayer error")
    }
}

@IBAction func continueRegist(_ sender: AnyObject) {

    let headers: HTTPHeaders = ["Authorization": "Token ___(**token**)_____",
                                "Accept": "application/json"]

    data = NSData (contentsOf: soundFileURL!)

    let parameters: Parameters = ["from_account_id": "3",
                                  "to_account_id": "4",
                                  "file": data!,
                                 ]

    let URL = "http://leaofımjpüsmfweüdıpckfw"

            Alamofire.request(URL, method: .put, parameters: parameters, headers: headers).responseJSON { response in
                if let data = response.result.value {
                    print(data)
                }
            }
}
func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
    startRocordButton.isEnabled = true
    stopRecordButton.isEnabled = false
}

func audioPlayerDecodeErrorDidOccur(_ player: AVAudioPlayer, error: Error?) {
    print("Audio Play Decode Error")
}

func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) {
}

func audioRecorderEncodeErrorDidOccur(_ recorder: AVAudioRecorder, error: Error?) {
    print("Audio Record Encode Error")
}

我在上面共享了我的代碼。 這里的重點是將音頻錄制為.wav，在應用程序中以及在continueRegist部分中播放，我想使用alamofire調用put方法並將音頻上傳到我們的amazons3server。 錄制和播放音頻部分完全可以正常工作。 問題出在方法continueRegist中。 調用該方法后，我得到正確的響應，它看起來成功。 然后，我從s3服務器的url檢查它。 音頻似乎已上傳，但是當我下載並播放時，它無法正常工作。 我不知道問題出在哪里。

另外，當我嘗試從Postman上傳並選擇文件並提供正確的表單數據信息時，我可以收聽上傳到s3服務器的聲音。 這里可能出什么問題了？

您可以在下面通過郵遞員找到我的請求：

身體：

截屏時忘了選擇文件，但它只是一個.wav文件。

頭

請不要問我那些令您不滿意的問題。

希望您能夠幫助我。

謝謝！

Answer 1

問題出在您的Alamofire請求中：您正在使用JSON中的音頻數據構建JSON。 但是，您可以在郵遞員中檢查HTTP代碼（右上方/發送下方），該請求是“多部分表單數據”。

如何實現多部分Alamofire：它應該類似於我不確定appendBodyPart語句的內容。 他們取決於你的情況

let audioData: NSData = ...//should be loaded from the file

Alamofire.Manager.upload(.PUT,
                          URL,
                          headers: headers,
                          multipartFormData: { multipartFormData in
                            multipartFormData.appendBodyPart(data: "3".dataUsingEncoding(NSUTF8StringEncoding), name: "from_account_id")
                            multipartFormData.appendBodyPart(data: "4".dataUsingEncoding(NSUTF8StringEncoding), name: "to_account_id")
                            multipartFormData.appendBodyPart(data: audioData, name: "file", fileName: "file", mimeType: "application/octet-stream")
                            },
                          encodingCompletion: { encodingResult in
                            switch encodingResult {

                            case .Success(let upload, _, _):
                                upload.responseJSON { response in

                                }

                            case .Failure(let encodingError):
                                // Error while encoding request:
                            }
})

Answer 2

以下是上傳音頻文件的代碼：

let uploadAudioURL = "http://<your post API url>"



    let header : [String:String] = [
        "Authorization" : "<your authorisation token>"
    ]

    let voiceData = try? Data(contentsOf: <url of audio file to upload>)


    let params : [String:String] = [
        "length" : "39000",
        "title" : "Trying to upload",
    ]

    Alamofire.upload(
        multipartFormData: { (multipartFormData) in
            multipartFormData.append(voiceData!, withName: "voice", fileName: "TempRecordedAudioFile", mimeType: "audio/m4a")
            for (key, value) in params {
                multipartFormData.append(value.data(using: String.Encoding.utf8)!, withName: key)
            }
    },
        usingThreshold : SessionManager.multipartFormDataEncodingMemoryThreshold,
        to : uploadAudioURL,
        method: .post,
        headers: header){ (result) in

            switch result {
            case .success(let upload, _, _):

                upload.uploadProgress(closure: { (Progress) in
                    print("Upload Progress: \(Progress.fractionCompleted)")
                })

                upload.responseJSON { response in

                    if let JSON = response.result.value {
                        print("Response : ",JSON)

                    }
                }

            case .failure(let encodingError):
                print(encodingError)
            }

    }

希望它會有所幫助。

使用上述代碼段的一些注意事項：

1. 確保提供您的上傳網址
2. 添加所需的授權標頭詳細信息。
3. 在Alamofire.upload語句中，確保將withName設置為您的上傳API參數名稱。 我使用voice ，您可能具有不同的參數名稱。
4. upload.uploadProgress()是可選的。 如果不需要，可以將其刪除。