如何用Laravel配置Amazon S3？

要讓Laravel 與Amazon S3 協作，需安裝AWS SDK、配置憑證、設置文件系統並檢查權限。 1. 安裝AWS SDK：運行composer require league/flysystem-aws-s3-v3。2. 在.env 文件中配置AWS 憑證並填寫相應信息。 3. 在config/filesystems.php 中添加S3 驅動配置，使用環境變量避免硬編碼。 4. 設置默認磁盤或在需要時顯式調用S3。5. 確保IAM 用戶和存儲桶策略允許必要的操作，並檢查區域與存儲桶名稱拼寫正確。

To get Laravel working with Amazon S3, you basically need to set up the right credentials and configure your filesystems properly. It's not overly complicated, but there are a few key steps you shouldn't skip.

Install AWS SDK for PHP

Laravel uses Flysystem under the hood, and to connect to S3, you'll need the AWS SDK as a dependency. If you haven't already installed it, run:

• composer require league/flysystem-aws-s3-v3

That's all you need for the SDK part. No need to install anything else separately in most cases.

Configure Your AWS Credentials in Laravel

Go to your .env file and add the following lines (filling in your own values):

 AWS_ACCESS_KEY_ID=your-key
AWS_SECRET_ACCESS_KEY=your-secret
AWS_DEFAULT_REGION=us-east-1
AWS_BUCKET=your-bucket-name

Then in config/filesystems.php , make sure your disks array includes something like this:

 's3' => [
    'driver' => 's3',
    'key' => env('AWS_ACCESS_KEY_ID'),
    'secret' => env('AWS_SECRET_ACCESS_KEY'),
    'region' => env('AWS_DEFAULT_REGION'),
    'bucket' => env('AWS_BUCKET'),
    'url' => env('AWS_URL'),
    'endpoint' => env('AWS_ENDPOINT'), // optional, only if using custom endpoint
],

Make sure you're not hardcoding any credentials directly in this config file — always use environment variables.

Set the Default Disk or Use It Explicitly

If you want S3 to be your default filesystem disk, change this line in config/filesystems.php :

 'default' => 's3',

Alternatively, you can just call it explicitly when needed:

 Storage::disk('s3')->put('file.txt', 'contents');

This gives you more control if you're using multiple disks.

Also, don't forget that URLs generated by S3 might be signed or unsigned depending on your bucket policy. If you want public access, either adjust the visibility parameter when putting files or set the ACL accordingly.

Check Permissions and Bucket Policies

One thing that trips people up is permissions. Make sure:

• The IAM user associated with the access key has full access to the bucket.
• The bucket policy allows actions like s3:GetObject , s3:PutObject , etc., from your application's origin.

Also, double-check region and bucket name spelling — those are easy typos.

And if you're having trouble connecting, turn on logging temporarily in the AWS SDK or check Laravel logs to see what kind of error you're getting.

基本上就這些。 Once everything's set up, Laravel handles the rest pretty smoothly.

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