php工匠迁移失败答案

【问题标题】：php artisan migrate failedphp工匠迁移失败
【发布时间】：2020-01-22 05:27:41
【问题描述】：

我已经重新安装了我的 ubuntu 1.04.3。首先我安装了php：7.2.19，nodejs：12.10.0，apache和mysql。之后，我全局安装了 composer 和一些 php 扩展，这些扩展是安装 Laravel 所需的，并完成了 laravel 的安装。我使用 Laravel new 命令创建了一个项目...当我尝试执行“php artisan migrate”时，我遇到了这个错误，我不知道该怎么做。

错误： *

Illuminate\Database\QueryException : 找不到驱动程序 (SQL: PRAGMA foreign_keys = ON;)

在 /home/dbalaskas/Desktop/Laravel/myProject/vendor/laravel/framework/src/Illuminate/Database/Connection.php:665

    661|         // If an exception occurs when attempting to run a query, we'll format the error
    662|         // message to include the bindings with SQL, which will make this exception a
    663|         // lot more helpful to the developer instead of just the database's errors.
    664|         catch (Exception $e) {
  > 665|             throw new QueryException(
    666|                 $query, $this->prepareBindings($bindings), $e
    667|             );
    668|         }
    669|

异常跟踪：

1 PDOException::("找不到驱动程序") /home/dbalaskas/Desktop/Laravel/myProject/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

2
PDO::__construct("sqlite:/home/dbalaskas/Desktop/Laravel/myProject/database/database.sqlite", []) /home/dbalaskas/Desktop/Laravel/myProject/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

请使用参数 -v 查看更多详细信息。 *

.env 文件：

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:aG05wMCXTkKQeBdTAZBGzjvyfY8gyhPmZs4qoKIiYU4=
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=laravel
DB_USERNAME=root
DB_PASSWORD=

BROADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
SESSION_LIFETIME=120

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

MAIL_DRIVER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=
AWS_DEFAULT_REGION=us-east-1
AWS_BUCKET=

PUSHER_APP_ID=
PUSHER_APP_KEY=
PUSHER_APP_SECRET=
PUSHER_APP_CLUSTER=mt1

MIX_PUSHER_APP_KEY="${PUSHER_APP_KEY}"
MIX_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"

config/database.php:

<?php

use Illuminate\Support\Str;

return [

    /*
    |--------------------------------------------------------------------------
    | Default Database Connection Name
    |--------------------------------------------------------------------------
    |
    | Here you may specify which of the database connections below you wish
    | to use as your default connection for all database work. Of course
    | you may use many connections at once using the Database library.
    |
    */

    'default' => env('DB_CONNECTION', 'mysql'),

    /*
    |--------------------------------------------------------------------------
    | Database Connections
    |--------------------------------------------------------------------------
    |
    | Here are each of the database connections setup for your application.
    | Of course, examples of configuring each database platform that is
    | supported by Laravel is shown below to make development simple.
    |
    |
    | All database work in Laravel is done through the PHP PDO facilities
    | so make sure you have the driver for your particular database of
    | choice installed on your machine before you begin development.
    |
    */

    'connections' => [

        'sqlite' => [
            'driver' => 'sqlite',
            'url' => env('DATABASE_URL'),
            'database' => env('DB_DATABASE', database_path('database.sqlite')),
            'prefix' => '',
            'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
        ],

        'mysql' => [
            'driver' => 'mysql',
            'url' => env('DATABASE_URL'),
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'prefix_indexes' => true,
            'strict' => true,
            'engine' => null,
            'options' => extension_loaded('pdo_mysql') ? array_filter([
                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
            ]) : [],
        ],

        'pgsql' => [
            'driver' => 'pgsql',
            'url' => env('DATABASE_URL'),
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '5432'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'prefix' => '',
            'prefix_indexes' => true,
            'schema' => 'public',
            'sslmode' => 'prefer',
        ],

        'sqlsrv' => [
            'driver' => 'sqlsrv',
            'url' => env('DATABASE_URL'),
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '1433'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'prefix' => '',
            'prefix_indexes' => true,
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Migration Repository Table
    |--------------------------------------------------------------------------
    |
    | This table keeps track of all the migrations that have already run for
    | your application. Using this information, we can determine which of
    | the migrations on disk haven't actually been run in the database.
    |
    */

    'migrations' => 'migrations',

    /*
    |--------------------------------------------------------------------------
    | Redis Databases
    |--------------------------------------------------------------------------
    |
    | Redis is an open source, fast, and advanced key-value store that also
    | provides a richer body of commands than a typical key-value system
    | such as APC or Memcached. Laravel makes it easy to dig right in.
    |
    */

    'redis' => [

        'client' => env('REDIS_CLIENT', 'phpredis'),

        'options' => [
            'cluster' => env('REDIS_CLUSTER', 'redis'),
            'prefix' => env('REDIS_PREFIX', Str::slug(env('APP_NAME', 'laravel'), '_').'_database_'),
        ],

        'default' => [
            'url' => env('REDIS_URL'),
            'host' => env('REDIS_HOST', '127.0.0.1'),
            'password' => env('REDIS_PASSWORD', null),
            'port' => env('REDIS_PORT', 6379),
            'database' => env('REDIS_DB', 0),
        ],

        'cache' => [
            'url' => env('REDIS_URL'),
            'host' => env('REDIS_HOST', '127.0.0.1'),
            'password' => env('REDIS_PASSWORD', null),
            'port' => env('REDIS_PORT', 6379),
            'database' => env('REDIS_CACHE_DB', 1),
        ],

    ],

];

【问题讨论】：

您确定安装了 pdo_mysql（扩展程序）吗？
是的，它已安装
你能给个config/database.php文件吗？？我认为你的错误在'default' => env('DB_CONNECTION', ' '), is in this section
config/database.php 文件是 laravel 创建的默认文件。 .env 相同，但如果你想要它： DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=laravel DB_USERNAME=root DB_PASSWORD=
从堆栈跟踪看来，使用 sqlite 的 PDO 对象被实例化 sqlite:/home/dbalaskas/Desktop/Laravel/myProject/database/database.sqlite。既然您选择了 Mysql 作为数据库，为什么会这样？你能检查一下吗？

标签： php laravel

【解决方案1】：

以下可用于安装缺少的php扩展。

apt install php-mysql

【讨论】：

我试过了，结果还是一样

【解决方案2】：

我遇到了同样的问题！！！我在我的项目中使用 sqlite (DB_CONNECTION=sqlite) 并在集成时遇到了这个错误。运行命令此命令以检查您的 php 服务器上安装了哪些依赖项

php -m

这将列出所有已安装的依赖项。检查是否安装了 pdo_mysql、pdo_sqlite 和 sqlite3。如果不安装那些。确保您已在 ubuntu 中启用 pdo 扩展。

就我而言，我的 php 7.2 没有安装 sqlite。因此，如果这与您运行此命令相同：

sudo apt-get install php7.2-sqlite

只是为了确保它也可以通过运行以下命令重新启动 apache 服务器：

sudo service apache2 start

然后在你的 laravel 项目中运行 migrate 命令：

php artisan migrate

希望对你有帮助....

【讨论】：

【解决方案3】：

您的数据库似乎正在使用 sqlite

sqlite:/home/dbalaskas/Desktop/Laravel/myProject/database/database.sqlite",

尝试将 .env 属性 DB_CONNECTION=mysql 更改为 DB_CONNECTION=sqlite

【讨论】：