一、简介
Laravel 有很棒的文件系统抽象层,是基于 Frank de Jonge 的 Flysystem 扩展包。 Laravel 集成的 Flysystem 提供了简单的接口,可以操作本地端空间、 Amazon S3 、 Rackspace Cloud Storage 。更方便的是,它可以非常简单的切换不同保存方式,但仍使用相同的 API 操作!
默认使用本地端空间。当然,你也可以设置多组磁盘,甚至在多个磁盘使用相同的驱动。Laravel文件系统提供了非常强大的功能,但是本文只介绍常用的文件上传功能。
本文通过介绍使用本地端空间来介绍Laravel中文件上传的使用。
二、配置
文件系统的配置文件在 config/filesystems.php 文件中,此处我们新建一个uploads本地磁盘空间用于存储上传的文件,具体配置项及说明如下:
<?php
return [
/*
|--------------------------------------------------------------------------
| Default Filesystem Disk
|--------------------------------------------------------------------------
|
| Here you may specify the default filesystem disk that should be used
| by the framework. A "local" driver, as well as a variety of cloud
| based drivers are available for your choosing. Just store away!
|
| Supported: "local", "ftp", "s3", "rackspace"
|
*/
// 默认使用本地端空间 支持 "local", "ftp", "s3", "rackspace"
\'default\' => \'local\',
/*
|--------------------------------------------------------------------------
| Default Cloud Filesystem Disk
|--------------------------------------------------------------------------
|
| Many applications store files both locally and in the cloud. For this
| reason, you may specify a default "cloud" driver here. This driver
| will be bound as the Cloud disk implementation in the container.
|
*/
// 云存储使用 Amazon S3
\'cloud\' => \'s3\',
/*
|--------------------------------------------------------------------------
| Filesystem Disks
|--------------------------------------------------------------------------
|
| Here you may configure as many filesystem "disks" as you wish, and you
| may even configure multiple disks of the same driver. Defaults have
| been setup for each driver as an example of the required options.
|
*/
\'disks\' => [
// 本地端的local空间
\'local\' => [
\'driver\' => \'local\',
\'root\' => storage_path(\'app\'),
],
// 本地端的public空间
\'public\' => [
\'driver\' => \'local\',
\'root\' => storage_path(\'app/public\'),
\'visibility\' => \'public\',
],
// 新建一个本地端uploads空间(目录) 用于存储上传的文件
\'uploads\' => [
\'driver\' => \'local\',
// 文件将上传到storage/app/uploads目录
\'root\' => storage_path(\'app/uploads\'),
// 文件将上传到public/uploads目录 如果需要浏览器直接访问 请设置成这个
//\'root\' => public_path(\'uploads\'),
],
// Amazon S3 相关配置
\'s3\' => [
\'driver\' => \'s3\',
\'key\' => \'your-key\',
\'secret\' => \'your-secret\',
\'region\' => \'your-region\',
\'bucket\' => \'your-bucket\',
],
],
];
三、代码实现文件上传
1. 控制器代码
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Storage;
use App\Http\Requests;
class FileController extends Controller
{
// 文件上传方法
public function upload(Request $request)
{
if ($request->isMethod(\'post\')) {
$file = $request->file(\'picture\');
// 文件是否上传成功
if ($file->isValid()) {
// 获取文件相关信息
$originalName = $file->getClientOriginalName(); // 文件原名
$ext = $file->getClientOriginalExtension(); // 扩展名
$realPath = $file->getRealPath(); //临时文件的绝对路径
$type = $file->getClientMimeType(); // image/jpeg
// 上传文件
$filename = date(\'Y-m-d-H-i-s\') . \'-\' . uniqid() . \'.\' . $ext;
// 使用我们新建的uploads本地存储空间(目录)
$bool = Storage::disk(\'uploads\')->put($filename, file_get_contents($realPath));
var_dump($bool);
}
}
return view(\'upload\');
}
}
2. 最基础的 upload.blade.php 模板代码:
<form method="post" enctype="multipart/form-data" >
<input type="file" name="picture">
<button type="submit"> 提交 </button>
</form>
获取到文件后,即可对文件进行各种处理。如果是图片,可以进行各种缩放及裁剪操作。