上传较大的文件时，您可以考虑将文件分块为 Google App Engine 支持的小请求集（应小于 32MB，这是当前的限制）。
用例子检查这个包 - https://github.com/pionl/laravel-chunk-upload
以下是使用上述包的工作代码。
查看
<div id="resumable-drop" style="display: none">
<p><button id="resumable-browse" class="btn btn-outline-primary" data-url="{{route('AddAttachments', Crypt::encrypt($rpt->DRAFT_ID))}}" style="width: 100%;
height: 91px;">Browse Report File..</button>
</div>
Javascript
<script>
var $fileUpload = $('#resumable-browse');
var $fileUploadDrop = $('#resumable-drop');
var $uploadList = $("#file-upload-list");
if ($fileUpload.length > 0 && $fileUploadDrop.length > 0) {
var resumable = new Resumable({
// Use chunk size that is smaller than your maximum limit due a resumable issue
// https://github.com/23/resumable.js/issues/51
chunkSize: 1 * 1024 * 1024, // 1MB
simultaneousUploads: 3,
testChunks: false,
throttleProgressCallbacks: 1,
// Get the url from data-url tag
target: $fileUpload.data('url'),
// Append token to the request - required for web routes
query:{_token : $('input[name=_token]').val()}
});
// Resumable.js isn't supported, fall back on a different method
if (!resumable.support) {
$('#resumable-error').show();
} else {
// Show a place for dropping/selecting files
$fileUploadDrop.show();
resumable.assignDrop($fileUpload[0]);
resumable.assignBrowse($fileUploadDrop[0]);
// Handle file add event
resumable.on('fileAdded', function (file) {
$("#resumable-browse").hide();
// Show progress pabr
$uploadList.show();
// Show pause, hide resume
$('.resumable-progress .progress-resume-link').hide();
$('.resumable-progress .progress-pause-link').show();
// Add the file to the list
$uploadList.append('<li class="resumable-file-' + file.uniqueIdentifier + '">Uploading <span class="resumable-file-name"></span> <span class="resumable-file-progress"></span>');
$('.resumable-file-' + file.uniqueIdentifier + ' .resumable-file-name').html(file.fileName);
// Actually start the upload
resumable.upload();
});
resumable.on('fileSuccess', function (file, message) {
// Reflect that the file upload has completed
location.reload();
});
resumable.on('fileError', function (file, message) {
$("#resumable-browse").show();
// Reflect that the file upload has resulted in error
$('.resumable-file-' + file.uniqueIdentifier + ' .resumable-file-progress').html('(file could not be uploaded: ' + message + ')');
});
resumable.on('fileProgress', function (file) {
// Handle progress for both the file and the overall upload
$('.resumable-file-' + file.uniqueIdentifier + ' .resumable-file-progress').html(Math.floor(file.progress() * 100) + '%');
$('.progress-bar').css({width: Math.floor(resumable.progress() * 100) + '%'});
});
}
}
</script>
控制器
public function uploadAttachmentAsChunck(Request $request, $id) {
// create the file receiver
$receiver = new FileReceiver("file", $request, HandlerFactory::classFromRequest($request));
// check if the upload is success, throw exception or return response you need
if ($receiver->isUploaded() === false) {
throw new UploadMissingFileException();
}
// receive the file
$save = $receiver->receive();
// check if the upload has finished (in chunk mode it will send smaller files)
if ($save->isFinished()) {
// save the file and return any response you need, current example uses `move` function. If you are
// not using move, you need to manually delete the file by unlink($save->getFile()->getPathname())
$file = $save->getFile();
$fileName = $this->createFilename($file);
// Group files by mime type
$mime = str_replace('/', '-', $file->getMimeType());
// Group files by the date (week
$dateFolder = date("Y-m-W");
$disk = Storage::disk('gcs');
$gurl = $disk->put($fileName, $file);
$draft = DB::table('draft')->where('DRAFT_ID','=', Crypt::decrypt($id))->get()->first();
$prvAttachments = DB::table('attachments')->where('ATTACHMENT_ID','=', $draft->ATT_ID)->get();
$seqId = sizeof($prvAttachments) + 1;
//Save Submission Info
DB::table('attachments')->insert(
[ 'ATTACHMENT_ID' => $draft->ATT_ID,
'SEQ_ID' => $seqId,
'ATT_TITLE' => $fileName,
'ATT_DESCRIPTION' => $fileName,
'ATT_FILE' => $gurl
]
);
return response()->json([
'path' => 'gc',
'name' => $fileName,
'mime_type' => $mime,
'ff' => $gurl
]);
}
// we are in chunk mode, lets send the current progress
/** @var AbstractHandler $handler */
$handler = $save->handler();
return response()->json([
"done" => $handler->getPercentageDone(),
]);
}
/**
* Create unique filename for uploaded file
* @param UploadedFile $file
* @return string
*/
protected function createFilename(UploadedFile $file)
{
$extension = $file->getClientOriginalExtension();
$filename = str_replace(".".$extension, "", $file->getClientOriginalName()); // Filename without extension
// Add timestamp hash to name of the file
$filename .= "_" . md5(time()) . "." . $extension;
return $filename;
}