使用AWS Swift SDK将图像上传到S3

Question

我正在尝试使用 AWS Swift SDK 中的 putObject 方法将图像上传到 S3 存储桶。我已按照此处的说明进行操作：https://docs.aws.amazon.com/sdk-for-swift/latest/developer-guide/examples-s3-objects.html

我可以将字符串添加到 s3 存储桶，但不知道如何添加图像。我尝试将图像转换为 jpegdata 和 pngdata，但无济于事。

这是我的代码：

//      AWS S3 image upload
        func uploadFile(withImage image: UIImage) {
            let s3Client = try? S3Client(region: "us-west-2")

            let bucketName = "xxxxx"
            let imageData = image.pngData()
            guard let dataToUpload = "Text to upload working".data(using: .utf8) else {
                return
            }
            let body = ByteStream.from(data: imageData!)
            s3Client!.putObject(input: PutObjectInput(body: body, bucket: bucketName, contentType: "image/png", key: "Test")) { result in
                switch(result) {
                case .success(let response):
                    if let eTag = response.eTag {
                        print("Successfully uploaded the file with the etag: \(eTag)")
                    }
                case .failure(let err):
                    print(err)
                }
            }
        }

如果我将“dataToUpload”放入 ByteStream.from 函数中，数据将存储在 s3 存储桶中。但是，如果我使用图像数据，则不会。

对任何和所有解决方案开放，谢谢！

Answer 1

您还可以用于AWSS3TransferUtility将文件上传到S3

脚步

1）在上传之前或仅通过此方法在您的应用程序委托中设置存储桶凭据setupCreditial()

2. 使用uploadFileToS3源视图中的方法将文件上传到 s3

     /** regionType is your bucket region name identityPoolId is your bucket unique id*/
   
    func setupCreditial(){
   
   
        let credentialProvider = AWSCognitoCredentialsProvider(regionType: .AFSouth1, identityPoolId: "YourPoolID")
        let config = AWSServiceConfiguration.init(region: .AFSouth1, credentialsProvider: credentialProvider)
   
        AWSServiceManager.default().defaultServiceConfiguration = config
        AWSS3TransferUtility.register(with: config!, forKey: "NAMEOFUTILITY")
    }
    /*
     key is your aws3 key where you want to put image . in most cases it would public/key where key = any udid
     content type is is file type like image,pdf,word etc
     **/
    public func uploadFileToS3(withKey key : String , contentType type : String, andData data : Data) {
        let awsUploadExp = AWSS3TransferUtilityUploadExpression()
        awsUploadExp.progressBlock = {task ,progress in
            //progress goes here
        }
        guard   let transferUtililty  = AWSS3TransferUtility.s3TransferUtility(forKey: "NAMEOFUTILITY") else{
            return
        }
        let completionHandler : AWSS3TransferUtilityUploadCompletionHandlerBlock = {(task,error)-> Void in
            //handle your completion
        }
   
        transferUtililty.uploadData(data, bucket: "YourBucketname", key: key, contentType: type, expression: awsUploadExp, completionHandler: completionHandler)
    }