software.amazon.awssdk ListObjectsV2Request 按照更新时间降序排序 java 代码

您可以使用以下代码来按照更新时间降序排序 Amazon S3 存储桶中的对象：

import software.amazon.awssdk.core.ResponseInputStream;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.ListObjectsV2Request;
import software.amazon.awssdk.services.s3.model.ListObjectsV2Response;
import software.amazon.awssdk.services.s3.model.S3Object;
import java.util.Comparator;
import java.util.List;

public class AmazonS3ObjectListing {

  public static void main(String[] args) {

    Region region = Region.US_EAST_1;
    S3Client s3Client = S3Client.builder().region(region).build();

    String bucketName = "your-bucket-name";
    String prefix = "your-object-prefix";

    ListObjectsV2Request listObjectsRequest = ListObjectsV2Request.builder()
            .bucket(bucketName)
            .prefix(prefix)
            .build();

    ListObjectsV2Response listObjectsResponse;

    do {
      listObjectsResponse = s3Client.listObjectsV2(listObjectsRequest);

      List<S3Object> s3Objects = listObjectsResponse.contents();

      s3Objects.sort(Comparator.comparing(S3Object::lastModified).reversed());

      for (S3Object object : s3Objects) {
        System.out.println(object.key() + " (size = " + object.size() + ")");
      }

      listObjectsRequest = ListObjectsV2Request.builder()
              .bucket(bucketName)
              .prefix(prefix)
              .continuationToken(listObjectsResponse.nextContinuationToken())
              .build();

    } while(listObjectsResponse.isTruncated());

    s3Client.close();

  }

}

请注意，此代码假定您已经设置了适当的 Amazon S3 存储桶和对象前缀，并且已经包括了以下库：

- aws-sdk-java-core
- aws-sdk-java-s3

如果您的代码中缺少这些库，则需要添加它们到您的项目中。