是否可以使用AWS SDK for Java 2 创建一个预签名的URL来访问阿里云/阿里云OSS存储桶内容？

Question

我正在尝试使用 AWS SDK for Java 2 API 来访问 S3。 我得到了它的大部分工作，除了presign URLs。

根据https://www.alibabacloud.com/help/doc-detail/31952.htm看起来有一个不同的查询参数要构建。 看起来我必须使用他们的库并有一个开关作为SignUtils的附加或重新实现部分。

Answer 1

显然您可以使用 AWS 的库来执行此操作。 您必须确保 Presigner 还具有endpointOverride配置集。 这是我的代码，我已经注释了相关的地方

@Configuration
@Slf4j
public class S3ClientConfiguration {

    // SPECIFY OVERRIDE
    @Value("${aws.s3.portfolio.endpoint:#{null}}")
    private URI endpointOverride;

    @Bean
    @ConditionalOnProperty(prefix = "aws.s3", name = "enabled", matchIfMissing = true)
    public S3AsyncClient amazonS3AsyncClient(
        final AwsCredentialsProvider credentialsProvider,
        final AwsRegionProvider regionProvider,
        final ClientOverrideConfiguration clientOverrideConfiguration) {

        final S3AsyncClientBuilder builder = S3AsyncClient.builder()
            .credentialsProvider(credentialsProvider)
            .overrideConfiguration(clientOverrideConfiguration)
            .region(regionProvider.getRegion());

        // SPECIFY OVERRIDE
        if (endpointOverride != null) {
            builder.endpointOverride(endpointOverride);
        }
        return builder
            .build();
    }

    @Bean
    @ConditionalOnProperty(prefix = "aws.s3", name = "enabled", matchIfMissing = true)
    public S3Client amazonS3Client(
        final AwsCredentialsProvider credentialsProvider,
        final AwsRegionProvider regionProvider,
        final ClientOverrideConfiguration clientOverrideConfiguration) {

        final S3ClientBuilder builder = S3Client.builder()
            .credentialsProvider(credentialsProvider)
            .overrideConfiguration(clientOverrideConfiguration)
            .region(regionProvider.getRegion());

        // SPECIFY OVERRIDE
        if (endpointOverride != null) {
            builder.endpointOverride(endpointOverride);
        }
        return builder
            .build();

    }

    @Bean
    public ClientOverrideConfiguration clientOverrideConfiguration(final HttpTracing httpTracing) {

        final var awsSdkTracing = AwsSdkTracing.create(httpTracing);
        return ClientOverrideConfiguration.builder()
            .addExecutionInterceptor(awsSdkTracing.executionInterceptor())
            .build();

    }

    @Bean
    @ConditionalOnProperty(prefix = "aws.s3", name = "enabled", matchIfMissing = true)
    public AwsCredentialsProvider credentialsProvider() {

        return DefaultCredentialsProvider.create();
    }

    @Bean
    @ConditionalOnProperty(prefix = "aws.s3", name = "enabled", matchIfMissing = true)
    public S3Presigner presigner(
        final AwsCredentialsProvider credentialsProvider,
        final AwsRegionProvider regionProvider) {

        final var builder = S3Presigner.builder()
            .credentialsProvider(credentialsProvider)
            .region(regionProvider.getRegion());

        // SPECIFY OVERRIDE
        if (endpointOverride != null) {
            builder.endpointOverride(endpointOverride);
        }
        return builder
            .build();

    }

    @Bean
    @ConditionalOnProperty(prefix = "aws.s3", name = "enabled", matchIfMissing = true)
    public AwsRegionProvider regionProvider() {

        return DefaultAwsRegionProviderChain.builder().build();

    }

}