laravel框架学习(三)

 1 <?php
 2 //自定义文件上传类
 3 namespace App\Org;
 4 
 5 class Upload
 6 {
 7     public $fileInfo = null; //上传文件信息
 8     public $path;
 9     public $typeList=array();
10     public $maxSize;
11     public $saveName;
12     public $error = "未知错误！";
13     
14     public function __construct($name)
15     {
16         $this->fileInfo = $_FILES[$name]; //获取上传文件信息
17     }
18     
19     //执行上传
20     public function doUpload()
21     {
22         $this->path = rtrim($this->path)."/";
23         
24         return $this->checkError() && $this->checkType() && $this->checkMaxSize() && $this->getName() && $this->move();
25     }
26     
27     //判断上传错误号
28     private function checkError()
29     {
30         if($this->fileInfo[‘error‘]>0){
31             switch($this->fileInfo[‘error‘]){
32                 case 1: $info = "上传大小超出php.ini的配置！"; break; 
33                 case 2: $info = "上传大小超出表单隐藏域大小！"; break; 
34                 case 3: $info = "只有部分文件上传！"; break; 
35                 case 4: $info = "没有上传文件！"; break; 
36                 case 6: $info = "找不到临时存储目录！"; break; 
37                 case 7: $info = "文件写入失败！"; break; 
38                 default: $info = "未知错误！"; break;
39             }
40             $this->error = $info;
41             return false;
42         }
43         return true;
44     }
45     //判断上传文件类型
46     private function checkType()
47     {
48         if(count($this->typeList)>0){
49             if(!in_array($this->fileInfo[‘type‘],$this->typeList)){
50                 $this->error = "上传文件类型错误!";
51                 return false;
52             }
53         }
54         return true;
55     }
56     //判断过滤上传文件大小
57     private function checkMaxSize()
58     {
59         if($this->maxSize>0){
60             if($this->fileInfo[‘size‘]>$this->maxSize){
61                 $this->error = "上传文件大小超出限制！";
62                 return false;
63             }
64         }
65         return true;
66     }
67 
68     //随机上传文件名称
69     private function getName()
70     {
71         $ext = pathinfo($this->fileInfo[‘name‘],PATHINFO_EXTENSION);//获取上传文件的后缀名
72         do{
73            $this->saveName = date("Ymdhis").rand(1000,9999).".".$ext;//随机一个文件名
74         }while(file_exists($this->path.$this->saveName)); //判断是否存在
75         return true;
76     }
77     //执行上传文件处理（判断加移动）
78     private function move()
79     {
80         if(is_uploaded_file($this->fileInfo[‘tmp_name‘])){
81             if(move_uploaded_file($this->fileInfo[‘tmp_name‘],$this->path.$this->saveName)){
82                 return true;
83             }else{
84                 $this->error = "移动上传文件错误！";
85             }
86         }else{
87             $this->error = "不是有效上传文件！";
88         }
89         return false;
90     }
91     
92 }

 1 <?php
 2 
 3 /*
 4 |--------------------------------------------------------------------------
 5 | Application Routes
 6 |--------------------------------------------------------------------------
 7 |
 8 | Here is where you can register all of the routes for an application.
 9 | It‘s a breeze. Simply tell Laravel the URIs it should respond to
10 | and give it the controller to call when that URI is requested.
11 |
12 */
13 
14 //新手入门--简单任务管理系统 至少需要3个路由
15 //显示所有任务的路由
16 Route::get(‘/‘, function () {
17     return view(‘welcome‘);
18 });
19 
20 /*访问local.lamp149.com/hello连视图都不经过*/
21 //普通路由
22 Route::get(‘/hello‘, function () {
23     return "hello world! \n 生成url地址".url("/hello");
24 });
25 
26 //demo测试路由exit
27 Route::get("demo","DemoController@index");
28 Route::get("demo/demo1","DemoController@demo1");
29 
30 
31 //学生信息管理路由  RESTful资源控制器
32 Route::resource("stu","StuController");
33 //文件上传
34 Route::resource("upload","UploadController");
35 //在线相册
36 Route::resource("photo","PhotoController");
37 
38 
39 //参数路由
40 Route::get("/demo/{id}",function($id){
41     return "参数id值：".$id;
42 });

  1 <?php
  2 
  3 namespace App\Http\Controllers;
  4 
  5 use App\Org\Upload;
  6 use Illuminate\Http\Request;
  7 
  8 use App\Http\Requests;
  9 use App\Http\Controllers\Controller;
 10 
 11 class PhotoController extends Controller
 12 {
 13     /**
 14      * Display a listing of the resource.
 15      *
 16      * @return \Illuminate\Http\Response
 17      */
 18     public function index()
 19     {
 20         $data = \DB::table("photo")->get();
 21         return view("photo/index",[‘list‘=>$data]);
 22     }
 23 
 24     /**
 25      * Show the form for creating a new resource.
 26      *
 27      * @return \Illuminate\Http\Response
 28      */
 29     public function create()
 30     {
 31         return view("photo/add");
 32     }
 33 
 34     /**
 35      * Store a newly created resource in storage.
 36      *
 37      * @param  \Illuminate\Http\Request  $request
 38      * @return \Illuminate\Http\Response
 39      */
 40     public function store(Request $request)
 41     {
 42         //使用自定义文件上传类处理上传
 43         $upfile = new \App\Org\Upload("ufile");
 44         //初始化上传信息
 45         $upfile->path="./uploads/"; //上传储存路径
 46         $upfile->typeList =array("image/jpeg","image/png","image/gif"); //设置允许上传类型
 47         $upfile->maxSize =0; //允许上传大小
 48 
 49         //执行文件上传
 50         $res = $upfile->doUpload();
 51         if($res){
 52 
 53             $data=[
 54                 ‘title‘=>$_POST[‘title‘],
 55                 ‘name‘=>$upfile->saveName,
 56                 ‘size‘=>$_FILES[‘ufile‘][‘size‘]
 57             ];
 58             $m = \DB::table("photo")->insertGetId($data);
 59             if($m>0){
 60                 return redirect()->action(‘PhotoController@index‘);
 61             }else{
 62                 //插入数据库失败，删除上传文件
 63                 unlink("./uploads/".$upfile->saveName);
 64             }
 65         }else{
 66             return back()->withInput();
 67         }
 68     }
 69 
 70     /**
 71      * Display the specified resource.
 72      *
 73      * @param  int  $id
 74      * @return \Illuminate\Http\Response
 75      */
 76     public function show($id)
 77     {
 78         //获取下载图片的名字
 79         $name = \DB::table("photo")->where("id",$id)->value("name");
 80         //执行下载
 81         return response()->download("./uploads/{$name}");
 82 
 83     }
 84 
 85     /**
 86      * Show the form for editing the specified resource.
 87      *
 88      * @param  int  $id
 89      * @return \Illuminate\Http\Response
 90      */
 91     public function edit($id)
 92     {
 93         //根据ID获取照片详细信息
 94         $data = \DB::table("photo")->where("id",$id)->first();
 95         return view("photo/edit",[‘list‘=>$data]);
 96     }
 97 
 98     /**
 99      * Update the specified resource in storage.
100      *
101      * @param  \Illuminate\Http\Request  $request
102      * @param  int  $id
103      * @return \Illuminate\Http\Response
104      */
105     public function update(Request $request, $id)
106     {
107         //使用自定义文件上传类处理上传
108         $upfile = new \App\Org\Upload("ufile");
109         //初始化上传信息
110         $upfile->path="./uploads/"; //上传储存路径
111         $upfile->typeList =array("image/jpeg","image/png","image/gif"); //设置允许上传类型
112         $upfile->maxSize =0; //允许上传大小
113 
114         //执行文件上传
115         $res = $upfile->doUpload();
116         if($res){
117 
118             $data=[
119                 ‘title‘=>$_POST[‘title‘],
120                 ‘name‘=>$upfile->saveName,
121                 ‘size‘=>$_FILES[‘ufile‘][‘size‘]
122             ];
123             //上传成功修改数据库
124             $m = \DB::table("photo")->where("id",$id)
125                                     ->update($data);
126             if($m>0){
127                 //修改数据库成功删除原图片
128                 unlink("./uploads/".$_POST[‘img‘]);
129                 return redirect()->action(‘PhotoController@index‘);
130             }else{
131                 //修改失败，删除上传图片
132                 unlink("./uploads/".$upfile->saveName);
133             }
134         }else{
135             //上传文件失败
136             //哪来哪回
137             return back()->withInput();
138         }
139 
140     }
141 
142     /**
143      * Remove the specified resource from storage.
144      *
145      * @param  int  $id
146      * @return \Illuminate\Http\Response
147      */
148     public function destroy(Request $request, $id)
149     {
150         $m = \DB::table("photo")->delete($id);
151         if($m>0){
152             unlink("./uploads/{$request->pname}");
153             return redirect()->action(‘PhotoController@index‘);
154         }else{
155             return redirect()->action(‘PhotoController@index‘);
156         }
157 
158     }
159 }

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8"/>
 5     <title>Laravel--在线相册</title>
 6 
 7 </head>
 8 <body>
 9 <center>
10 
11     @include("photo.menu")
12     <h3>浏览学生信息</h3>
13         <table width="700" border="1">
14             <tr>
15                 <th>编号</th>
16                 <th>标题</th>
17                 <th>图片</th>
18                 <th>大小</th>
19                 <th>操作</th>
20             </tr>
21             @foreach($list as $pic)
22                 <tr align="center">
23                     <td>{{$pic->id}}</td>
24                     <td>{{$pic->title}}</td>
25                     {{-- 相对路径 --}}
26                     <td><img src="./uploads/{{$pic->name}}" width="200"></td>
27                     <td>{{$pic->size}}</td>
28                     <td>
29                         <a href="javascript:void(0)" onclick="doDel({{$pic->id.‘,"‘.$pic->name.‘"‘}})">删除</a>
30                         <a href="{{url("photo")."/".$pic->id."/edit"}}">编辑</a>
31                         <a href="{{url("photo")."/".$pic->id}}">下载</a></td>
32                 </tr>
33             @endforeach
34         </table>
35     <form action="" method="POST">
36         <input type="hidden" name="_method" value="DELETE">
37         <input type="hidden" name="_token" value="{{ csrf_token() }}">
38         <input type="hidden" name="pname" value="" id="pname">
39     </form>
40     <script>
41         function doDel(id,name){
42             var form =  document.getElementsByTagName("form")[0];
43             var pname = document.getElementById("pname");
44             pname.value = name;
45             form.action ="{{url(‘photo‘)}}"+"/"+id;
46             form.submit();
47         }
48     </script>
49 </center>
50 </body>
51 </html>

1 <h2>Laravel实例--在线相册</h2>
2 <a href="{{url(‘photo‘)}}">浏览信息</a> |
3 <a href="{{url(‘photo/create‘)}}">添加信息</a>
4 <hr/>

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8"/>
 5     <title>Laravel实例--在线相册</title>
 6 </head>
 7 <body>
 8 <center>
 9     @include("photo.menu")
10     <h3>添加相片</h3>
11     <form action="{{url(‘photo‘)}}" method="post" enctype="multipart/form-data">
12         <input type="hidden" name="_token" value="{{ csrf_token() }}">
13         <table width="300" border="0">
14             <tr>
15                 <td align="right">标题：</td>
16                 <td><input type="text" name="title"/></td>
17             </tr>
18             <tr>
19                 <td align="right">相片：</td>
20                 <td><input type="file"  name="ufile" /></td>
21             </tr>
22             <tr>
23                 <td colspan="2" align="center">
24                     <input type="submit" value="添加"/>
25                     <input type="reset" value="重置"/>
26                 </td>
27             </tr>
28         </table>
29     </form>
30 </center>
31 </body>
32 </html>

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8"/>
 5     <title>学生信息管理</title>
 6 </head>
 7 <body>
 8 <center>
 9     @include("photo.menu")
10 
11     <h3>编辑学生信息</h3>
12     <form action="{{url(‘photo‘)."/".$list->id}}" method="post" enctype="multipart/form-data">
13         <input type="hidden" name="_method" value="PUT">
14         <input type="hidden" name="_token" value="{{ csrf_token() }}">
15 
16         <table width="280" border="0">
17             <tr>
18                 <td  align="right">标题：</td>
19                 <td><input type="text" name="title" value="{{$list->title}}"/></td>
20             </tr>
21             <tr>
22                 <td align="right">图片：</td>
23                 {{--绝对路径--}}
24                 <td><img src="{{url(‘uploads/‘.$list->name)}}" width="200">
25                     <input type="hidden" name="img" value="{{$list->name}}">
26                     <input type="file" name="ufile"></td>
27             </tr>
28             <tr>
29                 <td colspan="2" align="center">
30                     <input type="submit" value="修改"/>
31                     <input type="reset" value="重置"/>
32                 </td>
33             </tr>
34         </table>
35     </form>
36 </center>
37 
38 </body>
39 </html>

 1 <html>
 2     <head>
 3         <title>Laravel--实例</title>
 4     </head>
 5     <style>
 6         a{
 7 
 8             text-decoration: none;
 9         }
10     </style>
11     <body>
12         <div class="container" style="width:500px;margin: auto;">
13             <div class="content">
14                 <div class="title"><h1>Laravel 5.1 实例</h1></div>
15                 <div style="width:250px;text-align: center;">
16                     <h3><a href="{{url(‘stu‘)}}">1. 学生信息管理</a></h3>
17                     <h3><a href="{{url(‘upload‘)}}">2. 文件上传</a></h3>
18                     <h3><a href="{{url(‘photo‘)}}">3. 在线相册</a></h3>
19                 </div>
20             </div>
21         </div>
22     </body>
23 </html>