Question

我正在尝试将文件上传到Amazon S3，没什么特别的。我已设法进行实际上传，文件上传成功。剩下的唯一问题是我无法在S3中更改文件的名称。似乎默认情况下，文件的名称设置与密钥相同。可能是我发送密钥作为参数，我应该发送文件的名称。但是，我尝试更改参数并支持错误。

请在下面找到我正在使用的代码：

Bucket bucket = client.createBucket("testBucket", Region.EU_Ireland);

    List<PartETag> partTags = new ArrayList<>();

    InitiateMultipartUploadRequest request = new InitiateMultipartUploadRequest(
            bucket.getName(), secretAmazonKey);

    InitiateMultipartUploadResult result = client
            .initiateMultipartUpload(request);
    File file = new File(filePath);
    long contentLength = file.length();
    long partSize = 8 * 1024 * 1024;

    try {
        // Uploading the file, part by part.
        long filePosition = 0;

        for (int i = 1; filePosition < contentLength; i++) {
            // Last part can be less than 8 MB therefore the partSize needs
            // to be adjusted accordingly
            partSize = Math.min(partSize, (contentLength - filePosition));

            // Creating the request for a part upload
            UploadPartRequest uploadRequest = new UploadPartRequest()
                    .withBucketName(bucket.getName()).withKey(secretAmazonKey)
                    .withUploadId(result.getUploadId()).withPartNumber(i)
                    .withFileOffset(filePosition).withFile(file)
                    .withPartSize(partSize);

            // Upload part and add response to the result list.
            partTags.add(client.uploadPart(uploadRequest).getPartETag());

            filePosition += partSize;
        }
    }

    catch (Exception e) {
        client.abortMultipartUpload(new AbortMultipartUploadRequest(bucket
                .getName(), secretAmazonKey, result.getUploadId()));
    }

    CompleteMultipartUploadRequest compRequest = new CompleteMultipartUploadRequest(
            bucket.getName(), secretAmazonKey, result.getUploadId(), partTags);

    client.completeMultipartUpload(compRequest);

非常感谢任何帮助。

非常感谢：）

Answer 1

上传请求中的key实际上是您的对象（文件）密钥（名称），而不是您的AWS密钥。每当您实例化client实例时，都是指定AWS凭据的时间。

您是否可以更具体地了解您在执行此操作时遇到的错误？

Answer 2

好吧，我最近第一次使用了Amazon S3，并且能够上传如下文件：

public void saveMinutes(Minutes minutes, byte [] data)
{

  AmazonS3 s3 = new AmazonS3Client(new BasicAWSCredentials(amazonS3AccessKey, amazonS3SecretAccessKey));
  ObjectMetadata metaData = new ObjectMetadata();
  metaData.setContentLength(data.length);
  metaData.setContentType("application/pdf");
  s3.putObject(new PutObjectRequest(amazonS3MinutesBucketName, minutes.getFileName(), new ByteArrayInputStream(data), metaData));
}

上传到Amazon S3时命名文件

2 个答案: