錯誤提示：

Class 'HTML' not found

錯誤起因：blade模板引入public目錄內的bootstrap樣式檔案，重新整理頁面報錯，通過搜尋找到以下解決辦法。

{{HTML::style('css/bootstrap3.css')}}

一、在專案目錄下的composer.json檔案內新增與框架版本相同的包。

 "require": {
        ...
        ...
        ...
        "laravelcollective/html": "5.7.*"
    },

二、執行composer update命令自動下載安裝所需依賴

e:\code\phpcode\laravel57\blog (master -> origin)
λ composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing laravelcollective/html (v5.7.1): Loading from cache
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: beyondcode/laravel-dump-server
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Discovered Package: laravelcollective/html
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
 

三、在專案目錄config/app.php檔案內新增引入類的名稱空間。

  'providers' => [
    // ...
    Collective\Html\HtmlServiceProvider::class,
    // ...
  ],

  'aliases' => [
    // ...
      'Form' => Collective\Html\FormFacade::class,
      'Html' => Collective\Html\HtmlFacade::class,
    // ...
  ],