[英]Download file from Amazon S3 with lumen/php
According to the resource given in the AWS documentation, downloading object can be done with the following code:根据AWS文档中给出的资源,可以使用以下代码下载object:
public function download($folder, $file)
{
$s3 = new S3Client([
'region' => env('AWS_REGION'),
'version'=>'latest',
'credentials' => [
'key' =>env('AWS_ACCESS_KEY_ID'),
'secret' =>env('AWS_SECRET_ACCESS_KEY')
],
]);
$result = $s3->getObject([
'Bucket' => env('AWS_BUCKET'),
'Key' => $folder.'/'.$file,
'ResponseContentType' => 'text/plain',
'ResponseContentLanguage' => 'en-US',
'ResponseContentDisposition' => 'attachment; filename='.$file,
'ResponseCacheControl' => 'No-cache',
'ResponseExpires' => gmdate(DATE_RFC2822, time() + 3600),
]);
header("Content-Type: {$result['ContentType']}");
echo $result['Body'];
}
According the docs the above code should display a pdf file (in my case), it opens a pdf but says根据文档,上面的代码应该显示一个 pdf 文件(在我的情况下),它会打开一个 pdf 但说
Failed to load PDF document.加载 PDF 文档失败。
The file is the s3 don't have any issue, I know it the code.该文件是 s3 没有任何问题,我知道它的代码。 But what can I do to the browser to read and also download automatically?但是我可以对浏览器做些什么来阅读和自动下载呢?
For detail info, I followed this link https://docs.aws.amazon.com/AmazonS3/latest/userguide/download-objects.html and went to using AWS SDKs有关详细信息,我点击此链接https://docs.aws.amazon.com/AmazonS3/latest/userguide/download-objects.html并使用 AWS 开发工具包
EDIT编辑
I changed 'ResponseContentType' => 'plain/text'
to 'ResponseContentType' => 'application/pdf'
, it opened the pdf but now I need to download it我将'ResponseContentType' => 'plain/text'
更改为'ResponseContentType' => 'application/pdf'
,它打开了 pdf 但现在我需要下载它
This should most likely be:这很可能是:
'ResponseContentType' => 'application/pdf',
Else it will be transferred as text and will result in a corrupt file.否则它将作为文本传输并导致文件损坏。
Adding header in the code like below solved my issue:在如下代码中添加 header 解决了我的问题:
public function download($folder, $file)
{
$s3 = new S3Client([
'region' => env('AWS_REGION'),
'version'=>'latest',
'credentials' => [
'key' =>env('AWS_ACCESS_KEY_ID'),
'secret' =>env('AWS_SECRET_ACCESS_KEY')
],
]);
$result = $s3->getObject([
'Bucket' => env('AWS_BUCKET'),
'Key' => $folder.'/'.$file,
'ResponseContentLanguage' => 'en-US',
'ResponseCacheControl' => 'No-cache',
'ResponseExpires' => gmdate(DATE_RFC2822, time() + 3600),
]);
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=" . $file);
header("Content-Type: {$result['ContentType']}");
echo $result['Body'];
}
I already wrote on EDIT that changing 'ResponseContentType' => 'plain/text'
to 'ResponseContentType' => 'application/pdf'
opened the pdf but I choose to not include ResponseContentType
on my code so that it can it any file type.我已经在EDIT上写道,将'ResponseContentType' => 'plain/text'
更改为'ResponseContentType' => 'application/pdf'
打开了 pdf 但我选择不在我的代码中包含ResponseContentType
以便它可以处理任何文件类型。
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