Laravel中的文件上传和处理：管理用户上传的文件

<form action="/upload" method="post" enctype="multipart/form-data">
    @csrf
    <input type="file" name="file" id="file">
    <input type="submit" value="上传">
</form>

public function upload(Request $request)
{
    $file = $request->file('file');
    if ($file->isValid()) {
        $path = $file->store('uploads');
        // 保存成功，返回文件路径
        return $path;
    } else {
        // 文件上传失败
        return '文件上传失败';
    }
}

// config/filesystems.php
'disks' => [
    ...
    'local' => [
        'driver' => 'local',
        'root' => storage_path('app'),
    ],
    's3' => [
        'driver' => 's3',
        'key' => env('AWS_ACCESS_KEY_ID'),
        'secret' => env('AWS_SECRET_ACCESS_KEY'),
        'region' => env('AWS_DEFAULT_REGION'),
        'bucket' => env('AWS_BUCKET'),
    ],
    ...
],

composer require intervention/image

public function upload(Request $request)
{
    $file = $request->file('file');
    if ($file->isValid()) {
        // 保存原图
        $path = $file->store('uploads');
        
        // 生成缩略图
        $thumbnail = Image::make($file)->resize(200, 200)->save('uploads/thumbnails/'.$file->hashName());
        
        // 保存成功，返回文件路径和缩略图路径
        return [
            'path' => $path,
            'thumbnail' => $thumbnail->path(),
        ];
    } else {
        // 文件上传失败
        return '文件上传失败';
    }
}

<img src="{{ asset($path) }}" alt="文件">