laravel7 图片上传及视图显示

1：修改框架config下的文件filesystems.php中的配置；

原文件
<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Filesystem Disk
    |--------------------------------------------------------------------------
    |
    | Here you may specify the default filesystem disk that should be used
    | by the framework. The "local" disk, as well as a variety of cloud
    | based disks are available to your application. Just store away!
    |
    */

    'default' => env('FILESYSTEM_DRIVER', '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.
    |
    */

    'cloud' => env('FILESYSTEM_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.
    |
    | Supported Drivers: "local", "ftp", "sftp", "s3"
    |
    */

    'disks' => [

        'local' => [
            'driver' => 'local',
            'root' => storage_path('app'),
        ],

        'public' => [
            'driver' => 'local',
            'root' => storage_path('app/public'),
            'url' => env('APP_URL').'/storage',
            'visibility' => 'public',
        ],

        's3' => [
            'driver' => 's3',
            'key' => env('AWS_ACCESS_KEY_ID'),
            'secret' => env('AWS_SECRET_ACCESS_KEY'),
            'region' => env('AWS_DEFAULT_REGION'),
            'bucket' => env('AWS_BUCKET'),
            'url' => env('AWS_URL'),
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Symbolic Links
    |--------------------------------------------------------------------------
    |
    | Here you may configure the symbolic links that will be created when the
    | `storage:link` Artisan command is executed. The array keys should be
    | the locations of the links and the values should be their targets.
    |
    */

    'links' => [
        public_path('storage') => storage_path('app/public'),
    ],

];

修改的文件

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Filesystem Disk
    |--------------------------------------------------------------------------
    |
    | Here you may specify the default filesystem disk that should be used
    | by the framework. The "local" disk, as well as a variety of cloud
    | based disks are available to your application. Just store away!
    |
    */

    'default' => env('FILESYSTEM_DRIVER', '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.
    |
    */

    'cloud' => env('FILESYSTEM_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.
    |
    | Supported Drivers: "local", "ftp", "sftp", "s3"
    |
    */

    'disks' => [

        'local' => [
            'driver' => 'local',
            'root' => public_path(),
        ],

      
        'public' => [
            'driver' => 'local',
            'root' => public_path(),
            'url' => env('APP_URL').'/storage',
            'visibility' => 'public',
        ],

        's3' => [
            'driver' => 's3',
            'key' => env('AWS_ACCESS_KEY_ID'),
            'secret' => env('AWS_SECRET_ACCESS_KEY'),
            'region' => env('AWS_DEFAULT_REGION'),
            'bucket' => env('AWS_BUCKET'),
            'url' => env('AWS_URL'),
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Symbolic Links
    |--------------------------------------------------------------------------
    |
    | Here you may configure the symbolic links that will be created when the
    | `storage:link` Artisan command is executed. The array keys should be
    | the locations of the links and the values should be their targets.
    |
    */

    'links' => [
        public_path('storage') => storage_path('app/public'),
        public_path('img') => public_path('img'),
    ],

];

然后书写路由：

Route::group(['namespace' => 'exam1'], function(){
//    菜单添加
    Route::get('create','ExamController@create');
//    菜单保存
    Route::post('store','ExamController@store');
//    菜单展示
    Route::get('index','ExamController@index');
//    菜单删除
    Route::get('del/{id}','ExamController@del');
});

视图：

  <div class="row cl">
            <label class="form-label col-xs-4 col-sm-3"><span class="c-red">*</span>图片：</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="file" class="input-text" value="" placeholder="" id="adminName" name="img">
            </div>
        </div>

添加至控制器store方法中：

    public function store(Request $request){
//        接值
       $params=$request->except('_token');
//       文件上传
       $img=$request->file('img');
//       保存文件
       $params['img']=$img->store(date('Y-m-d')."/".'img');
       $params['img']="/".$params['img'];
         /*文件上传
          *  $path= url('').'/'. $img->store('img');
              $params['img']=$path;
          * */
//添加入库
      $res=Exam::create($params);
     if (!$res){
         return redirect('create')->withErrors(['error'=>'添加失败']);
     }
        return redirect('index')->with(['success'=>'添加成功']);

    }

列表展示“：

 <tbody>
            @foreach($data as $item)
                <tr class="text-c">
                    <td>{{$item->id}}</td>
                    <td>{{$item->name}}</td>
                    <td>{{$item->categoy}}</td>
                    {{-- <td><img src="{{\Illuminate\Support\Facades\URL::asset($item->img)}}" alt=""></td>--}}
                    <td><img src="{{$item->img}}" alt="" style="width: 100px" height="100px"></td>
                    <td>{{$item->price}}</td>
                    <td><a href="/del/{{$item->id}}">删除</a></td>
                    {{--                <td class="f-14 td-manage"><a style="text-decoration:none" onClick="article_stop(this,'10001')" href="javascript:;" title="下架">--}}
                    {{--                        <i class="Hui-iconfont"></i></a> <a style="text-decoration:none" class="ml-5" onClick="article_edit('资讯编辑','article-add.html','10001')" href="javascript:;" title="编辑"><i class="Hui-iconfont"></i></a> <a style="text-decoration:none" class="ml-5" onClick="article_del(this,{{$item->id}})" href="javascript:;" title="删除"><i class="Hui-iconfont"></i></a></td>--}}
                </tr>
            @endforeach
            </tbody>

效果图：