未找到 Laravel 类“App\Http\Controllers\Controller”

Question

我是 Laravel 的新手，我正在尝试修复这个错误。Controller.php 存在于App\Http\Controllers\. 我试过 composer dump-autoload 并没有修复它。

我已经读到我需要使用工匠来为我的应用程序命名。然后它将命名空间从 App\ 更改为我的应用程序名称。我应该这样做吗？

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use Illuminate\Html\FormBuilder;

use DB;

use App\Http\Controllers\Controller;

class HomeController extends Controller

{

/**

 * Create a new controller instance.

 *

 * @return void

 */

public function __construct()

{

    $this->middleware('auth');

}

/**

 * Show the application dashboard.

 *

 * @return \Illuminate\Contracts\Support\Renderable

 */

public function index()

{

    return view('home');

}

public function insertform()

{

    return view('home');

}

public function insertMeasurement(Request $request) {

    $neck = $request->input('neck');

    $arm_length = $request->input('arm_length');

    $chest = $request->input('chest');

    $stomach = $request->input('stomach');

    $seat = $request->input('seat');

    $shirt_length = $request->input('shirt_length');

    $shoulder = $request->input('shoulder');

    $arm = $request->input('arm');

    $bicep = $request->input('bicep');

    $wrist = $request->input('wrist');

    $data=array("neck"=>$neck,"arm_length"=>$arm_length,"chest"=>$chest,"stomach"=>$stomach,"seat"=>$seat,

                "shirt_length"=>$shirt_length,"shoulder"=>$shoulder,"arm"=>$arm,"bicep"=>$bicep,"wrist"=>$wrist);

    DB::table('measurements')->insert($data);

    echo "Record inserted successfully.<br/>";

    echo '<a href = "/insert">Click Here</a> to go back.';

}

}

Answer 1

尝试composer dump-autoload命令一次。编辑：删除此行class HomeController extends Controller并将其替换为class HomeController extends \App\Http\Controllers\Controller或者class HomeController extends App\Http\Controllers\Controller

Answer 2

无需use App\Http\Controllers\Controller;将其取下，您的控制器应该可以正常工作。

Answer 3

如果 App/Http/Controllers/ 文件夹没有 Controller.php 文件，也会发生错误。确保文件存在。