用于iOS的AWSS3TransferUtility不起作用(但AWSS3TransferManager起作用)

Question

我之前使用AWSS3TransferManager上传图片到我的s3存储桶，一切都很完美，但我认为后台上传是必要的，所以决定切换到AWSS3TransferUtilityManager。我已经完全按照指南中所示的方式实现了代码，但上载从未开始：

实例化AWS代码(在应用委托中- didFinishLaunching...)：

    //AWS SDK
    let credentialsProvider = AWSCognitoCredentialsProvider(regionType: AWSRegionType.USEast1, identityPoolId: "my_pool_id")        
    let configuration = AWSServiceConfiguration(region: AWSRegionType.USWest1, credentialsProvider: credentialsProvider)
    AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration

设置保存图片的临时目录，以便上传：

        //Set up and potentially clear temporary image directory before uploading
        let path = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("image.png")
        let thumbnailUrl = NSURL(fileURLWithPath: path)

        var error: NSError? = nil
        if NSFileManager.defaultManager().fileExistsAtPath(thumbnailUrl.path!) {
            do {
                try NSFileManager.defaultManager().removeItemAtPath(thumbnailUrl.path!)
                print("Successfully cleared temporary directory")

            } catch let fileError as NSError {
                error = fileError
                print("Error clearing temporary image directory")
            }
        }

设置传输实用程序表达式：

        let expression:AWSS3TransferUtilityUploadExpression = AWSS3TransferUtilityUploadExpression()

进度更新代码：

        //-------------------------
        //Progress Bar Update
        expression.progressBlock = { (task: AWSS3TransferUtilityTask,progress: NSProgress) -> Void in
            dispatch_async(dispatch_get_main_queue(),{

                print("Image upload progress update: \(progress.fractionCompleted)")

            })
        }

将ACL标记为公共

        //Mark ACL as public
        expression.setValue("public-read", forRequestParameter: "x-amz-acl")
        expression.setValue("public-read", forRequestHeader: "x-amz-acl" )

完成处理程序代码：

        //-------------------------
        //Completion handler
        self.imageUploadCompletionHandler = { (task:AWSS3TransferUtilityUploadTask, error:NSError?) -> Void in

            print("Image upload complete")

            dispatch_async(dispatch_get_main_queue(), {

                if(error != nil){
                    print("Failure uploading thumbnail")

                }else{
                    print("Success uploading thumbnail")
                }

            })
        }

上传：

        //--------------------------
        //Upload Thumbnail
        AWSS3TransferUtility.defaultS3TransferUtility().uploadFile(thumbnailUrl, bucket: "exampleBucket", key: "exampleKey", contentType: "image/jpeg", expression: expression, completionHander: self.imageUploadCompletionHandler).continueWithBlock({ (task:AWSTask) -> AnyObject? in

            if(task.error != nil){
                print("Error uploading thumbnail: \(task.error)")
                s3RequestSuccessful = false

            }

            if(task.exception != nil){
                print("Exception uploading thumbnail: \(task.exception)")
                s3RequestSuccessful = false

            }

            if(task.result != nil){
                print("Starting upload...")
            }
            return nil
        })

所以我的存储桶在US-West-1，身份池在US-East-1，我知道有一些关于确保存储桶和身份池在同一区域的帖子，但这应该通过我实现的以下代码来处理：

 let configuration = AWSServiceConfiguration(region: AWSRegionType.USWest1, credentialsProvider: credentialsProvider)

我得到的行为是完成处理程序和进度块代码从未被调用过。这里我漏掉了什么？再一次，使用AWSS3TransferManager将文件上传到同一个存储桶中

Answer 1

通过深入研究试验和错误，以及来自AWS论坛的一些灵感，找到了答案。显然，AWSS3TransferUtilityManager不能处理名称中包含特殊字符(在我的例子中是破折号)的存储桶。令人沮丧，因为这不是AWSS3TransferManager的问题。

Answer 2

我试过你的代码，看起来很适合我。

task.exception != nil

不起作用，所以就把它去掉吧。