owl-admin/app/Http/Controllers/UploadController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class UploadController extends Controller
{
    public function upload(Request $request)
    {
        // 验证请求
        $request->validate([
            'file' => 'required|file|mimes:jpg,jpeg,png,gif|max:2048',
            'bucket' => 'required|string', // 验证桶名
        ]);

        // 获取桶名
        $bucket = $request->input('bucket');

        // 上传文件到指定的 S3 桶
        $path = $request->file('file')->store('uploads', $bucket);

        // 获取文件名
        $filename = basename($path);

        // 生成文件的 URL
        $url = Storage::disk($bucket)->url($path);

        // 返回文件名和 URL
        return response()->json([
            'filename' => $filename,
            'url' => $url, // 返回文件的 URL
        ], 201);
    }

    public function download(Request $request)
    {
        // 获取桶名
        $bucket = $request->input('bucket');
        $filename = $request->input('filename');

        // 从指定的 S3 桶获取文件
        $filePath = 'uploads/' . $filename;

        if (!Storage::disk($bucket)->exists($filePath)) {
            return response()->json(['message' => 'File not found.'], 404);
        }

        // 返回文件下载响应
        return Storage::disk($bucket)->download($filePath);
    }

    public function view(Request $request)
    {
        // 获取桶名
        $bucket = $request->input('bucket');
        $filename = $request->input('filename');

        // 从指定的 S3 桶获取文件
        $filePath = 'uploads/' . $filename;

        if (!Storage::disk($bucket)->exists($filePath)) {
            return response()->json(['message' => 'File not found.'], 404);
        }

        // 获取文件的大小和 MIME 类型
        $size = Storage::disk($bucket)->size($filePath);
        $mimetype = Storage::disk($bucket)->mimeType($filePath);
        $url = Storage::disk($bucket)->url($filePath); // 生成文件的 URL

        // 返回文件的元数据和 URL
        return response()->json([
            'filename' => $filename,
            'size' => $size,
            'mimetype' => $mimetype,
            'url' => $url, // 返回文件的 URL
        ]);
    }
}