问题

我正在尝试使用以下 Java 代码列出指定前缀下存储桶中的所有对象：

ListObjectsV2Request request =
      new ListObjectsV2Request()
          .withBucketName(bucketName)
          .withDelimiter("/")
          .withPrefix(prefix)
          .withMaxKeys(2);
ListObjectsV2Result result;
do {
  result = s3Client.listObjectsV2(req);
  log.info("结果大小为：" + result.getObjectSummaries().size());

s3Client 已正确设置，因为我可以进行上传、删除等操作。我只在列出对象时遇到问题。如果不提供前缀，我会收到访问被拒绝的错误；但如果提供前缀，我会收到空响应。我使用了 aws s3 ls 进行了权限测试，能够打印出整个存储桶的内容。有关调试的下一步想法吗？

<details>
<summary>英文:</summary>

I&#39;m trying to list all objects in a bucket under a prefix with the following code in java:

    ListObjectsV2Request request =
          new ListObjectsV2Request()
              .withBucketName(bucketName)
              .withDelimiter(&quot;/&quot;)
              .withPrefix(prefix)
              .withMaxKeys(2);
      ListObjectsV2Result result;
      do {
        result = s3Client.listObjectsV2(req);
        log.info(&quot;Results size is : &quot; + result.getObjectSummaries().size());

The s3client is set up correctly because I can upload, delete, etc. I only have a problem listing objects. I receive access denied if I don&#39;t provide a prefix, but if I provide a prefix I receive an empty response. I tested `aws s3 ls` to see if I had permissions and I&#39;m able to print the whole bucket out that way. Any ideas for next steps for debugging?

</details>


# 答案1
**得分**: 0

通过ssh登录到实例并比较aws s3 ls和s3api的输出进行了解决。忘记了必需的前缀和分隔符。

<details>
<summary>英文:</summary>

Solved by sshing into instance and comparing the output of aws s3 ls &amp; s3api. Had forgotten mandatory prefix and delimiter.

</details>