aws实现文件夹（包含子文件夹和子文件）复制（桶内复制）,复制到指定文件夹，java代码

感谢您的提问！我会尽力回答您的问题。

针对您的问题，我们可以通过以下 Java 代码实现将 AWS S3 桶内的文件夹（包含子文件夹和子文件）复制到指定文件夹：

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.CopyObjectRequest;
import com.amazonaws.services.s3.model.CopyObjectResult;
import com.amazonaws.services.s3.model.ListObjectsRequest;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;

public class AwsS3FolderCopy {
    private static String sourceBucketName = "source-bucket";
    private static String sourceFolderName = "source-folder";
    private static String destinationBucketName = "destination-bucket";
    private static String destinationFolderName = "destination-folder";

    public static void main(String[] args) throws IOException {
        AmazonS3 s3client = new AmazonS3Client(new ProfileCredentialsProvider());

        List<String> keysToCopy = new ArrayList<String>();
        ObjectListing objectListing;

        // List all objects in source folder recursively
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest()
                .withBucketName(sourceBucketName)
                .withPrefix(sourceFolderName + "/");
        do {
            objectListing = s3client.listObjects(listObjectsRequest);
            for (S3ObjectSummary objectSummary : objectListing.getObjectSummaries()) {
                System.out.println("Object Key: " + objectSummary.getKey());
                keysToCopy.add(objectSummary.getKey());
            }
            listObjectsRequest.setMarker(objectListing.getNextMarker());
        } while (objectListing.isTruncated());

        // Copy objects to destination folder
        for (String key : keysToCopy) {
            String newKey = key.replaceFirst(sourceFolderName, destinationFolderName);
            CopyObjectRequest copyObjectRequest = new CopyObjectRequest(sourceBucketName, key, destinationBucketName, newKey);
            CopyObjectResult copyObjectResult = s3client.copyObject(copyObjectRequest);
        }

        System.out.println("Done!");
    }
}

请将 `sourceBucketName`, `sourceFolderName`, `destinationBucketName` 和 `destinationFolderName` 替换成您自己的值。这段代码会遍历指定 `sourceBucketName` 中的指定 `sourceFolderName` 文件夹内的所有文件和子文件夹，复制到指定 `destinationBucketName` 中的指定 `destinationFolderName` 文件夹内。

希望这些信息能够帮助到您，如果您有任何其他问题，请不要犹豫与我联系。