Laravel 4.2 Composer 安装错误：“无法扫描类”

Question

我想通过 Composer 在我的新 Laravel 4.2 安装中安装一些包。但是，我遇到了一个例外。

这是我的 Composer 文件：

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "license": "MIT",   
    "require": {
        "laravel/framework": "4.2.*",
        "zizaco/confide": "~4.0@dev",
        "zizaco/entrust": "1.2.*@dev",
        "barryvdh/laravel-ide-helper": "1.*",
        "fzaninotto/faker": "1.3.*@dev",
        "bllim/datatables": "~1.3",
        "barryvdh/laravel-debugbar": "~1.7"
    },
    "require-dev": {
        "way/generators": "~2.6",
        "barryvdh/laravel-ide-helper": "~1.11"
    },
    "autoload": {
        "classmap": [
            "app/commands",
            "app/controllers",
            "app/models",
            "app/database/migrations",
            "app/database/seeds",
            "app/tests/TestCase.php",
            "app/controllers/admin",
            "app/controllers/user"
        ]
    },
    "scripts": {
        "post-install-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "php artisan clear-compiled",
            "php artisan optimize"
        ],
        "post-update-cmd":[
            "php artisan ide-helper:generate"
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ]
    },
    "config": {
        "preferred-install": "dist"
    },
    "minimum-stability": "stable"
}

运行composer install 时，我得到：

$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Warning: The lock file is not up to date with the latest changes in composer.jso
n. You may be getting outdated dependencies. Run update to update them.
Nothing to install or update
Generating autoload files



  [RuntimeException]
  Could not scan for classes inside "app/controllers/admin" which does not ap
  pear to be a file nor a folder



install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-p
lugins] [--no-custom-installers] [--no-scripts] [--no-progress] [-v|vv|vvv|--ver
bose] [-o|--optimize-autoloader] [packages1] ... [packagesN]

这基本上是一个全新的 Laravel 安装。为什么会出现错误：

Could not scan for classes inside "app/controllers/admin" which does not appear to be a file nor a folder

更新

使用composer update：

$ composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Removing mockery/mockery (0.9.2)
  - Removing phpunit/phpunit (4.3.4)
  - Removing phpunit/php-code-coverage (2.0.11)
  - Removing phpunit/php-token-stream (1.3.0)
  - Removing phpunit/php-file-iterator (1.3.4)
  - Removing phpunit/php-timer (1.0.5)
  - Removing phpunit/phpunit-mock-objects (2.3.0)
  - Removing phpunit/php-text-template (1.2.0)
  - Removing doctrine/instantiator (1.0.4)
  - Removing symfony/yaml (v2.5.6)
  - Removing sebastian/comparator (1.0.1)
  - Removing sebastian/diff (1.2.0)
  - Removing sebastian/environment (1.2.0)
  - Removing sebastian/exporter (1.0.2)
  - Removing sebastian/version (1.0.3)
  - Removing summerstreet/woodling (v0.1.6)
Writing lock file
Generating autoload files



  [RuntimeException]
  Could not scan for classes inside "app/controllers/admin" which does not ap
  pear to be a file nor a folder



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock]
 [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-
dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [
packagesN]

Answer 1

对于 2021 年的 laravel 8，如果不存在，则在控制器中添加文件夹 admin 并且 转到 composer.json 并将类映射更改为

  "classmap": [
        "app/http/controllers/admin"
    ]

Answer 2

尝试使用composer update。这就是它在错误中所说的内容。

...You may be getting outdated dependencies. Run update to update them...

更新：

Composer 正在尝试查找文件夹 app/controllers/admin，这不是 laravel 中的标准文件夹。你确定这个文件夹存在吗？如果没有，您可以尝试从 composer.json 中删除这些和其他自定义文件夹，然后手动添加它们。您还可以创建目录并保持 composer.json 不变。