Cannot declare class Controller, because the name is already in use

问题

I recently migrated a laravel 4.2 project to 5.0. So far I have completed all the necessary steps but I keep getting an error.

Cannot declare class Controller, because the name is already in use

My Controller is changed as provided by laravel in the upgrade guide.

<?php

use Illuminate\Foundation\Bus\DispatchesCommands;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;

abstract class Controller extends BaseController {

    use DispatchesCommands, ValidatesRequests;

}

Also I have added it to the classmap directive of my composer.json.

"autoload": {
    "classmap": [
        "database",
        "app/Http/Controllers"
    ],
    "psr-4": {
        "App\\": "app/"
    }
},

I couldn't find any solution so far so if you guys know what to do it would help me out a lot :) thanks in advance!

回答1:

Remove the "app/Http/Controllers" from your classmap.

Add namespace App\Http\Controllers; above your use blocks.

Then run composer dump-auto

回答2:

I'm pretty sure you have to add namespaces.

Namespacing

By default, Laravel 4 applications did not utilize namespacing within your application code. So, for example, all Eloquent models and controllers simply lived in the "global" namespace. For a quicker migration, you can simply leave these classes in the global namespace in Laravel 5 as well.

回答3:

When Creating Auto Discovery Events and their Listener classes, Just add below namespace at the top of your Listener class to avoid this error:

namespace App\Listeners;

回答4:

i had this problem on windows 2012 Server

when i use xdebug

i start debug and all worked good

there is no problem in my controller

<?php

namespace App\Http\Controllers;


use Illuminate\Routing\Controller as BaseController;
use Illuminate\Http\Request;

class HomeController extends BaseController

{

来源：https://stackoverflow.com/questions/40406418/cannot-declare-class-controller-because-the-name-is-already-in-use

标签

laravel

laravel-5