Question

我正在尝试将图片上传到Amazon S3，但我收到以下错误：

可选（错误域= NSCocoaErrorDomain代码= 260“无法打开文件”asset.JPG“，因为没有此类文件。”UserInfo = {NSFilePath = / asset.JPG，NSUnderlyingError = 0x7fb0d8eb3b00 {Error Domain = NSPOSIXErrorDomain代码= 2“没有这样的文件或目录”}}}）

以下代码是我获取图像或视频文件路径的位置 - 它存储在变量'fileLocation'中：

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    //let mediaType2 : UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
    let mediaType : CFString = info[UIImagePickerControllerMediaType] as! CFString



    //if video - save it
    if mediaType == kUTTypeMovie {
        let path = (info[UIImagePickerControllerMediaURL] as! NSURL).path
        if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(path!) && saveVideoVar == true{
            UISaveVideoAtPathToSavedPhotosAlbum(path!, self, "video:didFinishSavingWithError:contextInfo:", nil)
        }
    }
    else{
        let img : UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
        let screenSize: CGRect = UIScreen.mainScreen().bounds

        var multiplyNum = screenSize.width / img.size.width
        //if image height is going to be more than 60% of the screen, resize width and height to ensure that it isn't greater than 60% while keeping the aspect ratio correct
        if ((img.size.height*multiplyNum) > (screenSize.height*0.6)){
            multiplyNum = screenSize.height*0.6 / img.size.height
            imageViewWidthConstraint.constant = (multiplyNum*img.size.width)
            imageViewHeightConstraint.constant = screenSize.height*0.6
        }
        else{
            imageViewWidthConstraint.constant = screenSize.width
            imageViewHeightConstraint.constant = (multiplyNum*img.size.height)
        }
        imageView.image = img

    }
    let fileLocation: NSURL = info["UIImagePickerControllerReferenceURL"] as! NSURL
    nwyt.uploadS3(fileLocation)

    self.dismissViewControllerAnimated(true, completion: {})

}

无论我选择哪张照片，它总是会出现同样的错误，文件“asset.JPG”无法打开......“即使我打印文件位置时，路径也比这复杂，例如：“assets-library：//asset/asset.JPG？id = EC41AC54-CEBD-49AA-A1FA-864370D103C0＆amp; ext = JPG”

nwyt.uploadS3（）的实现：

func uploadS3(fileBody : NSURL){
    let uploadRequest: AWSS3TransferManagerUploadRequest = AWSS3TransferManagerUploadRequest()
    uploadRequest.bucket = "bx-video"
    uploadRequest.key = "testObject.jpg"
    uploadRequest.body = fileBody
    print(fileBody)

    let transferManager: AWSS3TransferManager = AWSS3TransferManager.defaultS3TransferManager()
    transferManager.upload(uploadRequest).continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: {(task: AWSTask) -> AnyObject! in
        if task.error != nil {
            print(task.error)
            NSLog("Error uploading : " + uploadRequest.key!)
        }
        else {
            NSLog("Upload completed : " + uploadRequest.key!)
        }
        return nil
    })
}

Answer 1

以下解决方案：

if let img : UIImage = imageView.image! as UIImage{
                let path = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("image.png")
                let imageData: NSData = UIImagePNGRepresentation(img)!
                imageData.writeToFile(path as String, atomically: true)

                // once the image is saved we can use the path to create a local fileurl
                let url:NSURL = NSURL(fileURLWithPath: path as String)
                nwyt.uploadS3(url)

            }

Answer 2

AWSS3TransferManager不支持ALAssetsLibrary。您需要将文件复制到您的应用磁盘空间并传递文件NSURL。请参阅this sample作为示例。

Answer 3

“assets-library：// ...”无法直接访问。但您可以使用PHImageManager（iOS8 +）在资源库中查找文件并将其复制到应用程序的沙箱中，然后使用URL将新创建的文件上载或随时执行。可以在this answer中找到示例代码，以问How to upload image that was taken from UIImagePickerController。

请注意，solution by @Mitchell更简单，但有一个严重的缺点 - 图像将转换为PNG（如果使用UIImageJPEGRepresentation，则转换为JPEG）。 JPEG - ＆gt; PNG转换将增加尺寸和PNG - ＆gt; JPEG可能会失去质量。在任何情况下，这都不再是原始图像。

Answer 4

我在尝试从共享扩展程序上传照片时收到了相同的错误代码= 260。针对此类问题的解决方案是不要尝试从其路径上传图像，而是使用文件名上传数据。这对我来说很有用https://github.com/daltoniam/SwiftHTTP api。

下载上传功能：上传（数据：数据，文件名：字符串，mimeType：字符串）

没有这样的文件位置 - 将图像从Swift上传到S3

4 个答案: