python - 图片无法发送到我的服务器

Question

图像无法发送到我的服务器。无法将图像上传到服务器。我正在制作 Swift 应用程序，我想在我的应用程序中制作一个系统，将图像上传到我的 Django 服务器。现在，PhotoController(用于系统)是

import Foundation
import MobileCoreServices
import UIKit
class PhotoController:UIViewController,UINavigationControllerDelegate,UIImagePickerControllerDelegate{

    @IBOutlet weak var myActivityIndicator: UIActivityIndicatorView!
    @IBOutlet weak var label: UILabel!
    @IBOutlet weak var myImageView: UIImageView!
    private var imagePicker:UIImagePickerController!

    @IBAction func uploadButtonTapped(_ sender: Any) {
        myImageUploadRequest()
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        label.adjustsFontSizeToFitWidth = true
        label.minimumScaleFactor = 0.5
        label.text = "Tap the PhotoSelect or Camera to upload a picture"
     }

    @IBAction func PhotoSelect(_ sender: Any) {
        let myPickerController = UIImagePickerController()
        myPickerController.delegate = self;
        myPickerController.sourceType = UIImagePickerControllerSourceType.photoLibrary

        self.present(myPickerController, animated: true, completion: nil)

    }

    @IBAction func Camera(_ sender: Any) {
        let sourceType:UIImagePickerControllerSourceType = UIImagePickerControllerSourceType.camera
        // カメラが利用可能かチェック
        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera){
            // インスタンスの作成
            let cameraPicker = UIImagePickerController()
            cameraPicker.sourceType = sourceType
            cameraPicker.delegate = self
            self.present(cameraPicker, animated: true, completion: nil)

        }
        else{
            label.text = "error"   
        }
    } 
    //　撮影が完了時した時に呼ばれる
    func imagePickerController(_ imagePicker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

        if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
            myImageView.contentMode = .scaleAspectFit
            myImageView.image = pickedImage

        }

        //閉じる処理
        imagePicker.dismiss(animated: true, completion: nil)
        label.text = "Tap the Send to save a picture"

    }

    // 撮影がキャンセルされた時に呼ばれる
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        picker.dismiss(animated: true, completion: nil)
        label.text = "Canceled"
    }

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

    func myImageUploadRequest()
    {

        let myUrl = NSURL(string: "http://localhost:8000/admin/accounts/post/");
        let request = NSMutableURLRequest(url:myUrl! as URL);
        request.httpMethod = "POST";
        //ユーザーごとに割り振りたい
        let param = [
            "firstName"  : "Sergey",
            "lastName"    : "Kargopolov",
            "userId"    : "9"
        ]

        let boundary = generateBoundaryString()

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


        let imageData = UIImageJPEGRepresentation(myImageView.image!, 1)

        if(imageData==nil)  { return; }

        request.httpBody = createBodyWithParameters(parameters: param, filePathKey: "file", imageDataKey: imageData! as NSData, boundary: boundary) as Data


        myActivityIndicator.startAnimating();

        let task = URLSession.shared.dataTask(with: request as URLRequest) {
            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: String.Encoding.utf8.rawValue)
            print("****** response data = \(responseString!)")

            do {
                let json = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary

                DispatchQueue.main.async {
                    self.myActivityIndicator.stopAnimating()
                    self.myImageView.image = nil;
                }

            }catch
            {
                print(error)
            }

        }

        task.resume()
    }
    func createBodyWithParameters(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {
        let body = NSMutableData();

        if parameters != nil {
            for (key, value) in parameters! {
                body.appendString(string: "--\(boundary)\r\n")
                body.appendString(string: "Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
                body.appendString(string: "\(value)\r\n")
            }
        }

        let filename = "user-profile.jpg"
        let mimetype = "image/jpg"

        body.appendString(string: "--\(boundary)\r\n")
        body.appendString(string: "Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
        body.appendString(string: "Content-Type: \(mimetype)\r\n\r\n")
        body.append(imageDataKey as Data)
        body.appendString(string: "\r\n")
        body.appendString(string: "--\(boundary)--\r\n")

        return body
    }

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

}
extension NSMutableData {

    func appendString(string: String) {
        let data = string.data(using: String.Encoding.utf8, allowLossyConversion: true)
        append(data!)
    }
}

这个 url let myUrl = NSURL(string: "http://localhost:8000/admin/accounts/post/ ");是我服务器的图片上传网址。回溯是

2017-06-14 23:04:50.480209 Kenshin_Swift[262:8094] [Generic] Creating an image format with an unknown type is an error
2017-06-14 23:04:52.660264 Kenshin_Swift[262:8267] App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.
error=Optional(Error Domain=NSURLErrorDomain Code=-1022 "The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSUnderlyingError=0x174456e90 {Error Domain=kCFErrorDomainCFNetwork Code=-1022 "(null)"}, NSErrorFailingURLStringKey=http://localhost:8000/admin/accounts/post/, NSErrorFailingURLKey=http://localhost:8000/admin/accounts/post/, NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection.})

我的 Info.plist 是

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>NSAppTransportSecurity</key>
  <dict>
   <key>NSExceptionDomains</key>
   <dict>
    <key>example.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
   </dict>
  </dict>
    <key>CFBundleSignature</key>
    <string></string>
    <key>CFBundleGetInfoString</key>
    <string></string>
    <key>CFBundleDisplayName</key>
    <string></string>
    <key>NSPhotoLibraryUsageDescription</key>
    <string>for photo library</string>
    <key>NSCameraUsageDescription</key>
    <string>for camera</string>
    <key>LSApplicationCategoryType</key>
    <string></string>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>$(EXECUTABLE_NAME)</string>
    <key>CFBundleIdentifier</key>
    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>NSHumanReadableCopyright</key>
    <string></string>
    <key>UILaunchStoryboardName</key>
    <string>LaunchScreen</string>
    <key>UIMainStoryboardFile</key>
    <string>Main</string>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
</dict>
</plist>

Traceback 告诉我我的 Info.plist 是错误的，但我不知道出了什么问题。当然，我添加了

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSExceptionDomains</key>
  <dict>
    <key>example.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
  </dict>
</dict>

到Info.plist，所以我不明白为什么图像无法发送到我的服务器。我以为这是Info.plist错误，但这个错误是在我的服务器中，对吗？我该如何解决这个问题？

Answer 1

在你的 info.plist 中

替换这个

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSExceptionDomains</key>
  <dict>
    <key>example.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
  </dict>
</dict>

到此

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>