Gunakan laravel5.1 dan dropzonejs untuk memuat naik imej Rujuk kepada contoh ini: http://www.dropzonejs.com/bootstrap.html Dalam contoh, klik untuk mula memuat naik dan permintaan http akan dihantar. Saya menyalin kod contoh ini Apabila saya mengklik untuk mula memuat naik, tiada apa yang berlaku untuk melihatnya, dan tiada permintaan http dihantar.
Tangkapan skrin adalah seperti berikut:
1 Ini adalah tangkapan skrin contoh di atas Walaupun permintaan tidak akan berjaya dihantar, ia akan dihantar
.
2 Ini milik saya, tiada permintaan akan dihantar
Kod adalah seperti berikut:
Lihat:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<link rel="stylesheet" href="https://cdn.rawgit.com/twbs/bootstrap/v4-dev/dist/css/bootstrap.css">
<style>
html, body {
height: 100%;
}
#actions {
margin: 2em 0;
}
/* Mimic table appearance */
p.table {
display: table;
}
p.table .file-row {
display: table-row;
}
p.table .file-row > p {
display: table-cell;
vertical-align: top;
border-top: 1px solid #ddd;
padding: 8px;
}
p.table .file-row:nth-child(odd) {
background: #f9f9f9;
}
/* The total progress gets shown by event listeners */
#total-progress {
opacity: 0;
transition: opacity 0.3s linear;
}
/* Hide the progress bar when finished */
#previews .file-row.dz-success .progress {
opacity: 0;
transition: opacity 0.3s linear;
}
/* Hide the delete button initially */
#previews .file-row .delete {
display: none;
}
/* Hide the start and cancel buttons and show the delete button */
#previews .file-row.dz-success .start,
#previews .file-row.dz-success .cancel {
display: none;
}
#previews .file-row.dz-success .delete {
display: block;
}
</style>
</head>
<body>
<p class="container" id="container">
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
upload photos
</button>
<!-- Modal -->
<p class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"
aria-hidden="true">
<p class="modal-dialog dropzone" id="my-awesome-dropzone" role="document">
<p class="modal-content">
<p class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
<span class="sr-only">Close</span>
</button>
<h4 class="modal-title" id="myModalLabel">upload photos</h4>
</p>
<p class="modal-body">
<p id="actions" class="row">
<p class="col-lg-7">
<span class="btn btn-success fileinput-button dz-clickable">
<i class="glyphicon glyphicon-plus"></i>
<span>add photos</span>
</span>
</p>
</p>
<p class="table table-striped files" id="previews">
<p id="template" class="file-row">
<!-- This is used as the file preview template -->
<p><span class="preview"><img data-dz-thumbnail/></span></p>
<p>
<p class="name" data-dz-name></p>
<strong class="error text-danger" data-dz-errormessage></strong>
</p>
<p>
<p class="size" data-dz-size></p>
<p class="progress progress-striped active" role="progressbar"
aria-valuemin="0" aria-valuemax="100" aria-valuenow="0">
<p class="progress-bar progress-bar-success" style="width:0%;"
data-dz-uploadprogress></p>
</p>
</p>
<p>
<button class="btn btn-primary start">
<i class="glyphicon glyphicon-upload"></i>
<span>Start</span>
</button>
<button data-dz-remove class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel</span>
</button>
<button data-dz-remove class="btn btn-danger delete">
<i class="glyphicon glyphicon-trash"></i>
<span>Delete</span>
</button>
</p>
</p>
</p>
</p>
<p class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</p>
</p>
</p>
</p>
<script src="http://ajax.useso.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://cdn.rawgit.com/twbs/bootstrap/v4-dev/dist/js/bootstrap.js"></script>
<script src="https://cdn.bootcss.com/dropzone/4.2.0/min/dropzone.min.js"></script>
</body>
</html>
js kod:
<script>
Dropzone.autoDiscover = false;
</script>
<script>
// Get the template HTML and remove it from the doument
var previewNode = document.querySelector("#template");
previewNode.id = "";
var previewTemplate = previewNode.parentNode.innerHTML;
previewNode.parentNode.removeChild(previewNode);
var myDropzone = new Dropzone(document.body, { // Make the whole body a dropzone
url: "fileupload", // Set the url
thumbnailWidth: 80,
thumbnailHeight: 80,
parallelUploads: 20,
previewTemplate: previewTemplate,
autoQueue: false, // Make sure the files aren't queued until manually added
previewsContainer: "#previews", // Define the container to display the previews
clickable: ".fileinput-button" // Define the element that should be used as click trigger to select files.
});
myDropzone.on("addedfile", function (file) {
// Hookup the start button
file.previewElement.querySelector(".start").onclick = function () {
myDropzone.enqueueFile(file);
};
});
// Update the total progress bar
myDropzone.on("totaluploadprogress", function (progress) {
document.querySelector("#total-progress .progress-bar").style.width = progress + "%";
});
myDropzone.on("sending", function (file) {
// Show the total progress bar when upload starts
document.querySelector("#total-progress").style.opacity = "1";
// And disable the start button
file.previewElement.querySelector(".start").setAttribute("disabled", "disabled");
});
// Hide the total progress bar when nothing's uploading anymore
myDropzone.on("queuecomplete", function (progress) {
document.querySelector("#total-progress").style.opacity = "0";
});
// Setup the buttons for all transfers
// The "add files" button doesn't need to be setup because the config
// `clickable` has already been specified.
document.querySelector("#actions .start").onclick = function () {
myDropzone.enqueueFiles(myDropzone.getFilesWithStatus(Dropzone.ADDED));
};
document.querySelector("#actions .cancel").onclick = function () {
myDropzone.removeAllFiles(true);
};
</script>
Penghalaan:
Route::resource('fileupload', 'FileController');
Pengawal:
public function imageUpload(Requests\StorePhotoPostRequest $request)
{
$this->wrongTokenAjax();
$file = \Input::file('file');
$destinationPath = 'uploads/';
$extension = $file->getClientOriginalExtension();
$fileName = \Auth::user()->id . '_' . time() . '.' . $extension;
$upload_success = \Input::file('file')->move($destinationPath, $fileName);
if ($upload_success) {
return \Response::json('success', 200);
} else {
return \Response::json('error', 400);
}
}
public function wrongTokenAjax()
{
if (\Session::token() !== \Request::get('_token')) {
$response = [
'status' => false,
'errors' => 'Wrong Token',
];
return \Response::json($response);
}
}
StorePhotoPostRequest
public function rules()
{
return [
'file' => 'required|image(jpeg,jpg,png,bmp,gif)',
];
}
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Pertama sekali, apabila anda menggunakan contoh http://www.dropzonejs.com/bootstrap.html, anda hanya menggunakan sebahagian daripada elemen halaman, tetapi masih terdapat kod untuk menggunakan elemen ini dalam js dimuat naik Terdapat butang "mulakan muat naik" untuk memuat naik semua fail dan butang "batalkan muat naik" di sebelah fail anda hanya mempunyai satu butang "tambah foto":
Tetapi masih terdapat kod panggilan sedemikian dalam js:
Jadi anda mengulas beberapa baris js di atas, dan kemudian menyelesaikan masalah seterusnya.
Kedua, sebenarnya terdapat "bar kemajuan" umum di sebelah kanan tiga butang asal, yang tidak ditemui pada halaman anda:
Tetapi anda masih menggunakan js berikut:
Sama ada anda menambah dua "butang" dan "jumlah bar kemajuan" yang tinggal, atau padamkan js tentang ketiga-tiga elemen ini, dan kemudian anda akan baik-baik saja. Selebihnya adalah untuk pelayan menerima dan memproses.