laravel - 目标 [App\Http\Controllers\IndexController] 不可实例化。在拉拉维尔

Question

我已经从 github 克隆了项目并安装在我的本地系统中，一切正常。

我通过命令创建了 Controller ， Controller 已创建，但是当我尝试使用 Controller 功能时，错误显示如下。

BindingResolutionException

Target [App\Http\Controllers\SomeController] is not instantiable. in Container.php (line 895)

我尝试通过运行以下命令来解决此问题:

php artisan cache:clear

php artisan clear-compiled

composer dump-autoload

php artisan optimize

php artisan config:clear

但我仍然遇到同样的错误。请帮我解决这个问题。

我的 Controller 是:

<?php

 namespace App\Http\Controllers;

 use Illuminate\Http\Request;

 class SomeController extends Controller
 {
  public function getIndex() {
    echo "string";
  }
 }

AppServiceProvider.php:

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema;

class AppServiceProvider extends ServiceProvider
{
/**
 * Bootstrap any application services.
 *
 * @return void
 */
 public function boot()
 {
    //
    Schema::defaultStringLength(191);
 }

  /**
   * Register any application services.
   *
   * @return void
  */
  public function register()
  {
      //
  }
}

Controller .php

<?php

 namespace App\Http\Controllers;

 use Illuminate\Foundation\Bus\DispatchesJobs;
 use Illuminate\Routing\Controller as BaseController;
 use Illuminate\Foundation\Validation\ValidatesRequests;
 use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
 use Carbon\Carbon;

class Controller extends BaseController
{
use AuthorizesRequests, DispatchesJobs, ValidatesRequests;


protected function __construct() {

   $variable2 = "I am Data 2";
   View::share ( 'variable2', $variable2 );
} 

protected function create_permission($role_type_id,$module_id)
{
    $CheckCreatePermission = \DB::table('role_type_access')->where(['role_type_id'=> $role_type_id,'module_id'=>$module_id])->select('create')->get();
    if(!empty($CheckCreatePermission[0]))
    {
        if($CheckCreatePermission[0]->create===1)
        {
            return 1;
        }
        return 0;
    }
    return 0;
}

protected function edit_permission($role_type_id,$module_id)
{
    $CheckEditPermission = \DB::table('role_type_access')->where(['role_type_id'=> $role_type_id,'module_id'=>$module_id])->select('edit')->get();
    if(!empty($CheckEditPermission[0]))
    {
        if($CheckEditPermission[0]->edit===1)
        {
            return 1;
        }
        return 0;
    }
    return 0;
}

protected function delete_permission($role_type_id,$module_id)
{
    $CheckDeletePermission = \DB::table('role_type_access')->where(['role_type_id'=> $role_type_id,'module_id'=>$module_id])->select('delete')->get();
    if(!empty($CheckDeletePermission[0]))
    {
        if($CheckDeletePermission[0]->delete===1)
        {
            return 1;
        }
        return 0;
    }
    return 0;
}

protected function view_permission($role_type_id,$module_id)
{
    $CheckViewPermission = \DB::table('role_type_access')->where(['role_type_id'=> $role_type_id,'module_id'=>$module_id])->select('view')->get();
    if(!empty($CheckViewPermission[0]))
    {
        if($CheckViewPermission[0]->view===1)
        {
            return 1;
        }
        return 0;
    }
    return 0;
}

protected function view_all_permission($role_type_id,$module_id)
{
    $CheckLayoutPermission = \DB::table('role_type_access')
    ->join('modules', 'role_type_access.module_id', '=', 'modules.id')
    ->where(['role_type_access.role_type_id'=> $role_type_id,'role_type_access.view'=>1,'role_type_access.module_id'=>$module_id])
    ->select('role_type_access.module_id','role_type_access.view','role_type_access.create','role_type_access.edit','role_type_access.delete','modules.name','modules.label')->get();

    return $CheckLayoutPermission;

   // print_R($$CheckViewMenuPermission);
   // echo count($CheckViewMenuPermission);
   /*        if(!empty($CheckViewPermission[0]))
    {
        if($CheckViewPermission[0]->view===1)
        {
            return 1;
        }
        return 0;
    }
    return 0;*/
}

public function getDownload($file_path,$file_name)
{
    //PDF file is stored under project/public/download/info.pdf
    $file= public_path().'/uploads/'.$file_path.'/'.$file_name;
    $headers = array(
              'Content-Type: application/pdf',
            );

    return \Response::download($file, $file_name, $headers);
}

public function updateTracker($tracked_date,$action)
{

    $Globaltracks = \DB::table('global_tracks')->where('tracked_date', $tracked_date)->get();
    if (count($Globaltracks) > 0) {

        \DB::table('global_tracks')
        ->where('tracked_date', $tracked_date)
        ->increment($action,1,['updated_at'=>Carbon::now()->toDateTimeString()]);

    } else {

        $Globaltracks_id = \DB::table('global_tracks')->insert(
        ['tracked_date' => $tracked_date,$action => 1,'created_at'=>Carbon::now()->toDateTimeString()]);

    }

   }


   }

Answer 1

将构造函数访问修饰符更改为公共(public)。它解决了我的问题。

public function __construct() {

   $variable2 = "I am Data 2";
   View::share ( 'variable2', $variable2 );
}