Java 使用grails的awss3

我正在尝试建立与aws的连接，以便在s3 bucket上完成基本操作。代码如下：

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());
        }
    }

这给了我一个错误：

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.

我还仔细检查了我使用的访问密钥和密钥。无法找出问题所在。

最好使用“cognito accountId”，而不是访问和密钥。因为使用cognito accountID对AWS的访问是有限的，而AWS总是可以更改的

//初始化Amazon Cognito凭据提供程序

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;

您还可以从我的博客中找到运行代码

不要忘记添加您的凭证信息：

帐户ID:@“xxxxxxxx” identityPoolId:@“xxxxxxxx-xxxxxxxx”

---

学习：@“xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxxxx”

您是否检查过IAM用户和角色是否同样灵活，并且通常在这种情况下使用。@tauheed提供了另一种选择。同意Mark！