php - 如何从 Google Cloud Storage 提供 SVG 图像？

Question

现在，我正在努力允许用户使用 Google 云存储将图像上传到我的网站。上传常规图像文件(例如 jpg、png、gif 和 webp)效果很好。但是，SVG 图像不起作用。它们上传正常，但是当我让 PHP 代码将 URL 作为图像源回显时，所有浏览器都只显示丢失的图像图标。但是，看起来好像图像正在代码检查器的网络选项卡中下载。不仅如此，将链接粘贴到其自己的选项卡中会导致文件下载。这让我认为服务器告诉浏览器下载文件而不是将其作为图像提供。这是我正在使用的代码:

include 'GDS/GDS.php';
//create datastore
$obj_store = new GDS\Store('HomeImages');
$bucket = CloudStorageTools::getDefaultGoogleStorageBucketName();
$root_path = 'gs://' . $bucket . '/' . $_SERVER["REQUEST_ID_HASH"] . '/';

$public_urls = [];
//loop through all files that are images
foreach($_FILES['images']['name'] as $idx => $name) {
    if ($_FILES['images']['type'][$idx] === 'image/jpeg' || $_FILES['images']['type'][$idx] === 'image/png' || $_FILES['images']['type'][$idx] === 'image/gif' || $_FILES['images']['type'][$idx] === 'image/webp' || $_FILES['images']['type'][$idx] === 'image/svg+xml') {
        //path where the file should be moved to
        $original = $root_path . 'original/' . $name;
        //move the file
        move_uploaded_file($_FILES['images']['tmp_name'][$idx], $original);

        //don't use the getImageServingUrl function on SVG files because they aren't really images
        if($_FILES['images']['type'][$idx] === 'image/svg+xml')
            $public_urls[] = [
                'name' => $name,
                'original' => CloudStorageTools::getPublicUrl($original, true),
                'thumb' => CloudStorageTools::getPublicUrl($original, true),
                'location' => $original
            ];
        else
            $public_urls[] = [
                'name' => $name,
                'original' => CloudStorageTools::getImageServingUrl($original, ['size' => 1263, 'secure_url' => true]),
                'thumb' => CloudStorageTools::getImageServingUrl($original, ['size' => 150, 'secure_url' => true]),
                'location' => $original
            ];
      }
}
//store image location and name in the datastore
foreach($public_urls as $urls){
    $image = new GDS\Entity();
    $image->URL = $urls['original'];
    $image->thumbURL = $urls['thumb'];
    $image->name = $urls['name'];
    $image->location = $urls['location'];
    $obj_store->upsert($image);
}
//redirect back to the admin page
header('Location: /admin/homeimages');

Answer 1

刚刚遇到这个问题，我找到了解决方案。事实证明，存储桶中的每个文件都附加了元数据并存储为键值对。我们要查找的键是“Content-Type”，该值对于 SVG 并不总是正确的。该值必须是“image/svg+xml”。我不知道如何以编程方式进行设置，但如果您只有几个对象，那么在存储桶在线界面的文件省略号菜单中很容易完成。