如何将gzip对象上传到s3？

I am creating a gzip string and uploading it as an object to s3. However when I download the same file from s3 and decompress it locally with gunzip I get this error: gunzip: 111.gz: not in gzip format When I look at the mime_content_type returned in the file downloaded from s3 it is set as: application/zlib

我正在创建一个gzip字符串并将其作为对象上传到s3。但是，当我从s3下载相同的文件并使用gunzip在本地解压缩时，我收到此错误：gunzip：111.gz：不是gzip格式当我查看从s3下载的文件中返回的mime_content_type时，它被设置为：application / zlib的

Here is the code I am running to generate the gzip file and push it to s3:

这是我运行的代码，用于生成gzip文件并将其推送到s3：

for($i=0;$i<=100;$i++) {
    $content .= $i . "\n";
}

$result = $this->s3->putObject(array(
   'Bucket' => 'my-bucket-name',
   'Key'    => '111.gz',
   'Body'   => gzcompress($content),
   'ACL' => 'authenticated-read',
   'Metadata' => [
       'ContentType' => 'text/plain',
       'ContentEncoding' => 'gzip'
   ]
));

The strange thing is that if I view the gzip content locally before I send it to s3 I am able to decompress it and see the original string. So I must be uploading the file incorrectly, any thoughts?

奇怪的是，如果我在将它发送到s3之前在本地查看gzip内容，我可以将其解压缩并查看原始字符串。所以我必须错误地上传文件，有什么想法吗？

1 个解决方案

#1

According to http://docs.aws.amazon.com/aws-sdk-php/v3/api/api-s3-2006-03-01.html#putobject the ContentType and ContentEncoding parameters belong on top level, and not under Metadata. So your call should look like:

根据http://docs.aws.amazon.com/aws-sdk-php/v3/api/api-s3-2006-03-01.html#putobject，ContentType和ContentEncoding参数属于*，而不是元数据。所以你的电话应该是这样的：

$result = $this->s3->putObject(array(
   'Bucket' => 'my-bucket-name',
   'Key'    => '111.gz',
   'Body'   => gzcompress($content),
   'ACL' => 'authenticated-read',
   'ContentType' => 'text/plain',
   'ContentEncoding' => 'gzip'
));

Also it's possible that by setting ContentType to text/plain your file might be truncated whenever a null-byte occurs. I would try with'application/gzip' if you still have problems unzipping the file.

此外，通过将ContentType设置为text / plain，您的文件可能会在发生空字节时被截断。如果解压缩文件仍有问题，我会尝试使用'application / gzip'。