Java S3Client 复制对象跨区域

ChatGPT的回答仅作参考：

要在Java S3Client中复制对象跨区域，您需要执行以下步骤：

1. 创建S3Client对象并设置源和目标区域：

```
AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(sourceRegion)
                    .build();

Region destinationRegion = Region.getRegion(destinationRegionName);
s3Client.setRegion(destinationRegion);
```

2. 使用S3Client的copyObject方法复制对象：

```
CopyObjectRequest copyObjectRequest = new CopyObjectRequest(sourceBucketName, sourceKey, destinationBucketName, destinationKey);
s3Client.copyObject(copyObjectRequest);
```

3. 如果需要，您可以设置其他选项，例如ACL和元数据：

```
AccessControlList acl = s3Client.getObjectAcl(sourceBucketName, sourceKey);
CopyObjectRequest copyObjectRequest = new CopyObjectRequest(sourceBucketName, sourceKey, destinationBucketName, destinationKey)
                    .withAccessControlList(acl)
                    .withMetadata(metadata);
s3Client.copyObject(copyObjectRequest);
```

注意：在复制对象时，源和目标区域必须是不同的。否则，您将收到“源和目标区域相同”的错误消息。