# 将 `CopyObject` 和 Amazon SDK 搭配使用
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以下代码示例演示了如何使用 `CopyObject`。

操作示例是大型程序的代码摘录，必须在上下文中运行。在以下代码示例中，您可以查看此操作的上下文：
+  [了解基本功能](s3-directory-buckets_example_s3-directory-buckets_Scenario_ExpressBasics_section.md) 

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#### [ Java ]

**适用于 Java 的 SDK 2.x**  
 查看 GitHub，了解更多信息。在 [Amazon 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/s3/src/main/java/com/example/s3/directorybucket#code-examples)中查找完整示例，了解如何进行设置和运行。
将对象从目录存储桶复制到目录存储桶。  

```
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.CopyObjectRequest;
import software.amazon.awssdk.services.s3.model.CopyObjectResponse;
import software.amazon.awssdk.services.s3.model.S3Exception;

import java.nio.file.Path;

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

    /**
     * Copies an object from one S3 general purpose bucket to one S3 directory
     * bucket.
     *
     * @param s3Client     The S3 client used to interact with S3
     * @param sourceBucket The name of the source bucket
     * @param objectKey    The key (name) of the object to be copied
     * @param targetBucket The name of the target bucket
     */
    public static void copyDirectoryBucketObject(S3Client s3Client, String sourceBucket, String objectKey,
            String targetBucket) {
        logger.info("Copying object: {} from bucket: {} to bucket: {}", objectKey, sourceBucket, targetBucket);

        try {
            // Create a CopyObjectRequest
            CopyObjectRequest copyReq = CopyObjectRequest.builder()
                    .sourceBucket(sourceBucket)
                    .sourceKey(objectKey)
                    .destinationBucket(targetBucket)
                    .destinationKey(objectKey)
                    .build();

            // Copy the object
            CopyObjectResponse copyRes = s3Client.copyObject(copyReq);
            logger.info("Successfully copied {} from bucket {} into bucket {}. CopyObjectResponse: {}",
                    objectKey, sourceBucket, targetBucket, copyRes.copyObjectResult().toString());

        } catch (S3Exception e) {
            logger.error("Failed to copy object: {} - Error code: {}", e.awsErrorDetails().errorMessage(),
                    e.awsErrorDetails().errorCode(), e);
            throw e;
        }
    }
```
+  有关 API 详细信息，请参阅《Amazon SDK for Java 2.x API Reference》**中的 [CopyObject](https://docs.amazonaws.cn/goto/SdkForJavaV2/s3-2006-03-01/CopyObject)。

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有关 Amazon SDK 开发人员指南和代码示例的完整列表，请参阅 [使用 Amazon SDK 通过 Amazon S3 进行开发](sdk-general-information-section.md)。本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。