使用Grails的AWS S3

Question

我正在嘗試建立與aws的連接，以便在s3存儲桶上進行基本操作。 以下是代碼：

def list(){
        AWSCredentials credentials = new BasicAWSCredentials("Access key", "Secret Key");


        AmazonS3 s3client = new AmazonS3Client(credentials);


        String bucketName = "sample-bucket-from-java-code";



        System.out.println("Listing all buckets : ");
        for (Bucket bucket : s3client.listBuckets()) {
            System.out.println(" - " + bucket.getName());
        }
    }

這給了我錯誤：

request- Received error response: com.amazonaws.services.s3.model.AmazonS3Exception: The request signature we calculated does not match the signature you provided. Check your key and signing method.

我還仔細檢查了我使用的訪問密鑰和秘密密鑰。 無法解決問題。

Answer 1

使用“ cognito accountId”總是比訪問和秘密密鑰好。 因為使用cognito accountID限制了對AWS的訪問，所以可以隨時更改。

//初始化Amazon Cognito憑證提供程序。

AWSCognitoCredentialsProvider* credentialsProvider = [AWSCognitoCredentialsProvider
                                                      credentialsWithRegionType:AWSRegionUSEast1
                                                      accountId:@"xxxxxxxxxxx"
                                                      identityPoolId:@"xxxxxxxxxxx"
                                                      unauthRoleArn:@"arn:aws:iam::xxxxxxxxxxx"
                                                      authRoleArn:nil];

AWSServiceConfiguration* configuration = [AWSServiceConfiguration configurationWithRegion:AWSRegionUSWest2
                                                                      credentialsProvider:credentialsProvider];

[AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

您也可以從我的博客中找到運行代碼。

https://tauheeda.wordpress.com/2015/10/15/use-aws-service-to-downloadupload-files-in-your-applications/

不要忘記添加您的憑據信息：

accountId：@“ xxxxxxxx” identityPoolId：@“ xxxxxxxx-xxxxxxxx” unauthRoleArn：@“ xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx”