如何使用Java SDK更改S3对象的存储类？

AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(accessKey, secretKey)))
                .withRegion(Regions.US_EAST_1) // 根据您的需求选择合适的区域
                .build();

CopyObjectRequest copyObjectRequest = new CopyObjectRequest(sourceBucketName, sourceObjectKey, destinationBucketName, destinationObjectKey)
                .withStorageClass(StorageClass.REDUCED_REDUNDANCY); // 设置新的存储类，这里以REDUCED_REDUNDANCY为例

CopyObjectResult copyObjectResult = s3Client.copyObject(copyObjectRequest);