所以我尝试下载一个存储在公共文件夹中的上传目录中的pdf文件。我正在使用 React 前端和 Laravel 后端。这是我在前端处理逻辑的方式
const downloadFile = async (attachmentName) => {
try {
const response = await fetch(`/attachments/${attachmentName}`);
// Check if the response is OK
if (!response.ok) {
throw new Error(`Failed to download file: ${response.status} ${response.statusText}`);
}
// Create a blob URL for the file content
const url = window.URL.createObjectURL(await response.blob());
// Create a temporary link element to trigger the download
const link = document.createElement('a');
link.href = url;
link.setAttribute('download', attachmentName);
// Append the link to the document body and trigger the download
document.body.appendChild(link);
link.click();
// Clean up
document.body.removeChild(link);
window.URL.revokeObjectURL(url);
} catch (error) {
console.error('Error downloading attachment:', error);
}
}
//Some more Code
<a href="#" onClick={() => downloadFile(job.attachments)}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="#b72424" class="bi bi-file-earmark-pdf-fill" viewBox="0 0 16 16">
<path d="M5.523 12.424q.21-.124.459-.238a8 8 0 0 1-.45.606c-.28.337-.498.516-.635.572l-.035.012a.3.3 0 0 1-.026-.044c-.056-.11-.054-.216.04-.36.106-.165.319-.354.647-.548m2.455-1.647q-.178.037-.356.078a21 21 0 0 0 .5-1.05 12 12 0 0 0 .51.858q-.326.048-.654.114m2.525.939a4 4 0 0 1-.435-.41q.344.007.612.054c.317.057.466.147.518.209a.1.1 0 0 1 .026.064.44.44 0 0 1-.06.2.3.3 0 0 1-.094.124.1.1 0 0 1-.069.015c-.09-.003-.258-.066-.498-.256M8.278 6.97c-.04.244-.108.524-.2.829a5 5 0 0 1-.089-.346c-.076-.353-.087-.63-.046-.822.038-.177.11-.248.196-.283a.5.5 0 0 1 .145-.04c.013.03.028.092.032.198q.008.183-.038.465z"/>
<path fill-rule="evenodd" d="M4 0h5.293A1 1 0 0 1 10 .293L13.707 4a1 1 0 0 1 .293.707V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2m5.5 1.5v2a1 1 0 0 0 1 1h2zM4.165 13.668c.09.18.23.343.438.419.207.075.412.04.58-.03.318-.13.635-.436.926-.786.333-.401.683-.927 1.021-1.51a11.7 11.7 0 0 1 1.997-.406c.3.383.61.713.91.95.28.22.603.403.934.417a.86.86 0 0 0 .51-.138c.155-.101.27-.247.354-.416.09-.181.145-.37.138-.563a.84.84 0 0 0-.2-.518c-.226-.27-.596-.4-.96-.465a5.8 5.8 0 0 0-1.335-.05 11 11 0 0 1-.98-1.686c.25-.66.437-1.284.52-1.794.036-.218.055-.426.048-.614a1.24 1.24 0 0 0-.127-.538.7.7 0 0 0-.477-.365c-.202-.043-.41 0-.601.077-.377.15-.576.47-.651.823-.073.34-.04.736.046 1.136.088.406.238.848.43 1.295a20 20 0 0 1-1.062 2.227 7.7 7.7 0 0 0-1.482.645c-.37.22-.699.48-.897.787-.21.326-.275.714-.08 1.103"/>
</svg>
{getAttachmentName(job.attachments)}
</a>
这是我的后端逻辑 路线文件
Route::get('/attachments/{attachment}', [AttachmentController::class, 'show'])->name('attachments.show');
控制器
{
public function show($attachment)
{
// Check if the file exists
if (!Storage::disk('public')->exists($attachment)) {
abort(404); // Or return a suitable error response
}
// Retrieve the file contents
$fileContents = Storage::disk('public')->get($attachment);
// Return the file as a response with the appropriate headers
return response($fileContents, 200)
->header('Content-Type', 'application/pdf')
->header('Content-Disposition', 'attachment; filename="' . basename($attachment) . '"');
}
}
所以出于某种原因。下载时，文件正在下载，但文件已损坏。而且它不包含接近应包含的字节总数
那么可能是什么问题？
更突出的可能是为
downloadanchor<a href="/attachments/${job.attachments}" download={true}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="#b72424" class="bi bi-file-earmark-pdf-fill" viewBox="0 0 16 16">
<path d="M5.523 12.424q.21-.124.459-.238a8 8 0 0 1-.45.606c-.28.337-.498.516-.635.572l-.035.012a.3.3 0 0 1-.026-.044c-.056-.11-.054-.216.04-.36.106-.165.319-.354.647-.548m2.455-1.647q-.178.037-.356.078a21 21 0 0 0 .5-1.05 12 12 0 0 0 .51.858q-.326.048-.654.114m2.525.939a4 4 0 0 1-.435-.41q.344.007.612.054c.317.057.466.147.518.209a.1.1 0 0 1 .026.064.44.44 0 0 1-.06.2.3.3 0 0 1-.094.124.1.1 0 0 1-.069.015c-.09-.003-.258-.066-.498-.256M8.278 6.97c-.04.244-.108.524-.2.829a5 5 0 0 1-.089-.346c-.076-.353-.087-.63-.046-.822.038-.177.11-.248.196-.283a.5.5 0 0 1 .145-.04c.013.03.028.092.032.198q.008.183-.038.465z"/>
<path fill-rule="evenodd" d="M4 0h5.293A1 1 0 0 1 10 .293L13.707 4a1 1 0 0 1 .293.707V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2m5.5 1.5v2a1 1 0 0 0 1 1h2zM4.165 13.668c.09.18.23.343.438.419.207.075.412.04.58-.03.318-.13.635-.436.926-.786.333-.401.683-.927 1.021-1.51a11.7 11.7 0 0 1 1.997-.406c.3.383.61.713.91.95.28.22.603.403.934.417a.86.86 0 0 0 .51-.138c.155-.101.27-.247.354-.416.09-.181.145-.37.138-.563a.84.84 0 0 0-.2-.518c-.226-.27-.596-.4-.96-.465a5.8 5.8 0 0 0-1.335-.05 11 11 0 0 1-.98-1.686c.25-.66.437-1.284.52-1.794.036-.218.055-.426.048-.614a1.24 1.24 0 0 0-.127-.538.7.7 0 0 0-.477-.365c-.202-.043-.41 0-.601.077-.377.15-.576.47-.651.823-.073.34-.04.736.046 1.136.088.406.238.848.43 1.295a20 20 0 0 1-1.062 2.227 7.7 7.7 0 0 0-1.482.645c-.37.22-.699.48-.897.787-.21.326-.275.714-.08 1.103"/>
</svg>
{getAttachmentName(job.attachments)}
</a>
download如果
downloadtarget="_blank"