ios - 无法使用 Alamofire 通过服务器上传音频文件

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")
}

我在上面分享了我的代码。这里的重点是将音频录制为 .wav，在应用程序中播放，在 continueRegist 部分我想用 alamofire 调用 put 方法并将音频上传到我们的 amazons3server。录制和播放音频部分完全正常。问题出在方法 continueRegist 中。调用该方法后，我得到了正确的响应，看起来很成功。然后，我从我们的 s3 服务器的 url 检查它。音频似乎已上传，但当我下载并播放时，它不起作用。我不知道问题出在哪里。

此外，当我尝试通过选择文件并提供正确的表单数据信息从 Postman 上传时，我可以听到上传到 s3 服务器的声音。这里可能出了什么问题？

你可以在下面找到我通过 Postman 的请求:

正文:

我在截屏的时候忘了选择文件，但它只是一个 .wav 文件。

标题

如果您不满意，请随时问我。

希望你能帮助我。

谢谢!

Answer 1

问题出在您的 Alamofire 请求中:您正在使用 JSON 中的音频数据构建 JSON。但是，您可以在 Postman 中检查请求是多部分表单数据的 HTTP 代码(右上/发送下方)。

如何实现多部分 Alamofire:它应该类似于我不确定 appendBodyPart 语句。他们取决于你的情况

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:
                            }
})