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：
<?phpreturn [ ???/* ???|-------------------------------------------------------------------------- ???| 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
<?phpnamespace App\Http\Controllers;use Illuminate\Http\Request;use App\Http\Requests;use Illuminate\Support\Facades\Storage;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() . ‘.‘ . $ext; ???????????????// 使用我们新建的uploads本地存储空间（目录） ???????????????//这里的uploads是配置文件的名称 ???????????????$bool = Storage::disk(‘uploads‘)->put($filename, file_get_contents($realPath)); ???????????????var_dump($bool); ???????????} ???????} ???????return view(‘upload‘); ???}} ???2-1.upload.blade.php 模板代码（上传组件为bootstrap-fileinput）如果太乱，可以看下面的最简单的页面：
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<meta name="renderer" content="webkit"> ???<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> ???<meta name="csrf-token" content="{{ csrf_token() }}"> ???<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"> ???<meta name="apple-mobile-web-app-status-bar-style" content="black"> ???<meta name="apple-mobile-web-app-capable" content="yes"> ???<meta name="format-detection" content="telephone=no"><link rel="stylesheet" ?href="/static/layui-v2.1.7/css/layui.css" />
<script src="/static/layui-v2.1.7/layui.js"></script>
<link rel="stylesheet" href="/static/css/bootstrap-4.0.0-beta.2/css/bootstrap.min.css" /><script src="/static/js/jquery/jquery-3.2.1.min.js"></script><script src="/static/js/popper/popper.min.js"></script><script src="/static/css/bootstrap-4.0.0-beta.2/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="/static/css/index.css" /><link href="/static/bootstrap-fileinput/css/fileinput.css" media="all" rel="stylesheet" type="text/css"/><link href="/static/css/font-awesome-4.7.0/css/font-awesome.min.css" media="all" rel="stylesheet" type="text/css"/><link href="/static/bootstrap-fileinput/themes/explorer-fa/theme.css" media="all" rel="stylesheet" type="text/css"/><script src="/static/bootstrap-fileinput/js/plugins/sortable.js" type="text/javascript"></script><script src="/static/bootstrap-fileinput/js/fileinput.js" type="text/javascript"></script><script src="/static/bootstrap-fileinput/js/locales/zh.js" type="text/javascript"></script><script src="/static/bootstrap-fileinput/themes/explorer-fa/theme.js" type="text/javascript"></script><script src="/static/bootstrap-fileinput/themes/fa/theme.js" type="text/javascript"></script> ???<title>报表上传</title></head><body><div class="layui-body"> ???????<div style="padding: 15px;"> ???????????<blockquote class="layui-elem-quote"> ???????????????报表上传 ???????????</blockquote> ???????</div> ???<div class="container"> ???????<div class="container kv-main"> ???????????<form enctype="multipart/form-data" method="post"> ???????????????<label class="control-label">Select File</label> ???????????????<input id="input-b5" name="input-b5" type="file" multiple> ???????????????{{ csrf_field() }} ???????????</form> ???????</div> ???</div></div></body><script> ???$(document).ready(function(){ ???????$("#input-b5").fileinput({ ???????????showCaption: false, ???????????theme: ‘fa‘, ???????????language: ‘zh‘, ???????????uploadUrl: ‘./upload‘, ???????????allowedFileExtensions: [‘jpg‘, ‘png‘, ‘gif‘] ???????}); ???}); ???$.ajaxSetup({ ???????headers: { ???????????‘X-CSRF-TOKEN‘: $(‘meta[name="csrf-token"]‘).attr(‘content‘) ???????} ???});</script></html>
2-2. 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>
Laravel 5 教程 - 文件上传
原文地址：http://www.cnblogs.com/fps2tao/p/8007312.html