swift - 使用 swift 将视频上传到 S3 操作无法完成。 ( cocoa 错误260。)”

Question

我正在尝试将视频文件上传到 Amazon S3我不断收到错误 260:

Error in uploading the video: Error Domain=NSCocoaErrorDomain Code=260 "The operation couldn’t be completed. (Cocoa error 260.)

我在某处读到亚马逊不支持 Assets 库 - 这是真的吗？如果是的话你有什么建议谢谢伊兰

func saveVideoToS3 () {

    var uploadRequest: AWSS3TransferManagerUploadRequest = AWSS3TransferManagerUploadRequest()

    uploadRequest.bucket = "BucketName"
    uploadRequest.key = "KeyText"

    //Move video file to the application folder so it can be read

    var savedVideoURLToBeUsed =  NSUserDefaults.standardUserDefaults().objectForKey("ThisIsTheVideoIWantToUse") as! String
    println("Video saved in Store: \(savedVideoURLToBeUsed)")

    var url: NSURL = NSURL(fileURLWithPath: savedVideoURLToBeUsed)!

    uploadRequest.body = url
    //uploadRequest.body = NSURL(fileURLWithPath: "file:///\(url)")

    println("URL: \(url)")

    let transferManager: AWSS3TransferManager = AWSS3TransferManager.defaultS3TransferManager()


    transferManager.upload(uploadRequest).continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: { (AWSTask) -> AnyObject! in

        //Handle errors
        if AWSTask.error != nil {

            println("Error in uploading the video: \(AWSTask.error)")

            if AWSTask.error.code == 1001 {

                self.saveVideoToS3()
            }
        // Retrive information important for later downloading
        } else {
            println("Video upload successful..")
            var uploadResult: AnyObject! = AWSTask.result
            println("Upload result: \(uploadResult)")

            //Delete file from the application folder

        }
        return nil

    })


}

Answer 1

Cocoa 错误 260 是一个 NSFileReadNoSuchFileError，这意味着您指定的路径无效(文件不在您所说的位置)，因此它可能与 S3 本身无关。我想到了三件事:

• 将 key 保存到用户设置时未使用 .synchronize()
• 您的文件网址包含无效字符
• 您没有正确地将文件写入文件系统

iOS8 重大变化

另请注意，从 iOS8 开始，由于应用程序与其分配的沙箱的工作方式发生了变化，您无法将绝对 URL 保存到文件中，因为下次打开应用程序时，它会有所不同。

Beginning in iOS 8, the Documents and Library directories are no longer siblings of your application's bundle.

我正在使用我编写的两个快速便捷函数来从缓存目录获取文件:

func cachePathWithFileName(fileName : String) -> String {

    let cacheDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
    return cacheDirectoryPath.stringByAppendingPathComponent(fileName)
}

和文档目录:

func documentsPathWithFileName(fileName : String) -> String {

    let documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(.CachesDirectory, .UserDomainMask, true)[0] as! String
    return documentsDirectoryPath.stringByAppendingPathComponent(fileName)
}

希望其中一些技巧能有所帮助!