文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# `GetBucketEncryption` 搭配 AWS SDK 使用
<a name="s3-directory-buckets_example_s3-directory-buckets_GetBucketEncryption_section"></a>

以下程式碼範例顯示如何使用 `GetBucketEncryption`。

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#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/s3/src/main/java/com/example/s3/directorybucket#code-examples)中設定和執行。
取得目錄儲存貯體的加密組態。  

```
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.GetBucketEncryptionRequest;
import software.amazon.awssdk.services.s3.model.GetBucketEncryptionResponse;
import software.amazon.awssdk.services.s3.model.S3Exception;
import software.amazon.awssdk.services.s3.model.ServerSideEncryptionRule;

import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.createS3Client;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteDirectoryBucket;

    /**
     * Retrieves the encryption configuration for an S3 directory bucket.
     *
     * @param s3Client   The S3 client used to interact with S3
     * @param bucketName The name of the directory bucket
     * @return The type of server-side encryption applied to the bucket (e.g.,
     *         AES256, aws:kms)
     */
    public static String getDirectoryBucketEncryption(S3Client s3Client, String bucketName) {
        try {
            // Create a GetBucketEncryptionRequest
            GetBucketEncryptionRequest getRequest = GetBucketEncryptionRequest.builder()
                    .bucket(bucketName)
                    .build();

            // Retrieve the bucket encryption configuration
            GetBucketEncryptionResponse response = s3Client.getBucketEncryption(getRequest);
            ServerSideEncryptionRule rule = response.serverSideEncryptionConfiguration().rules().get(0);

            String encryptionType = rule.applyServerSideEncryptionByDefault().sseAlgorithmAsString();
            logger.info("Bucket encryption algorithm: {}", encryptionType);
            logger.info("KMS Customer Managed Key ID: {}", rule.applyServerSideEncryptionByDefault().kmsMasterKeyID());
            logger.info("Bucket Key Enabled: {}", rule.bucketKeyEnabled());

            return encryptionType;
        } catch (S3Exception e) {
            logger.error("Failed to get bucket encryption: {} - Error code: {}", e.awsErrorDetails().errorMessage(),
                    e.awsErrorDetails().errorCode(), e);
            throw e;
        }
    }
```
+  如需 API 詳細資訊，請參閱《AWS SDK for Java 2.x API 參考》**中的 [GetBucketEncryption](https://docs.aws.amazon.com/goto/SdkForJavaV2/s3-2006-03-01/GetBucketEncryption)。

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