php - 无法使用 Laravel 5.2 连接到 Mysql 服务器

Question

当我将 MySQL 连接添加到我的 laravel 安装时，它似乎不起作用。我仔细检查了每个设置，也在远程服务器上。凭据是正确的，一切都应该有效。下面我将发布我的 Controller 、 View 和 database.config 文件，这样您就可以看到哪里出了问题。在过去的 2 个小时里，我一直在尝试解决这个问题，但我不知道出了什么问题:( 当我测试是否有数据时，它没有说该表不存在，它只是返回 null。(我确实有选择权限)

Controller

    <?php

namespace App\Http\Controllers;

use DB;
use App\Log;

class DataController extends Controller
{
    public function index()
    {
        $logs = Log::distinct()->select(['device_name','device_id'])->get();

        return view('data.index', compact('logs'));
    }

    public function show($device_id)
    {
        $logs = DB::table('datalog_net_data')->take(100);
        return view('data.show', compact('logs'));
    }
    public function dashboard()
    {
        $pageTitle = "Dashboard";
        return view('data.dashboard', compact('pageTitle'));
    }
}

数据库配置文件

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | PDO Fetch Style
    |--------------------------------------------------------------------------
    |
    | By default, database results will be returned as instances of the PHP
    | stdClass object; however, you may desire to retrieve records in an
    | array format for simplicity. Here you can tweak the fetch style.
    |
    */

    'fetch' => PDO::FETCH_CLASS,

    /*
    |--------------------------------------------------------------------------
    | 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' => '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',
            'database' => database_path('database.sqlite'),
            'prefix'   => '',
        ],

        'mysql' => [
            'driver'    => 'mysql',
            'host'      => '192.168.1.113',
            'database'  => 'gs_database',
            'username'  => 'laravel',
            'password'  => '1234',
            'charset'   => 'Pneunet44',
            'collation' => '',
            'prefix'    => '%',
            'strict'    => false,
            'engine'    => null,
        ],

        'pgsql' => [
            'driver'   => 'pgsql',
            'host'     => env('DB_HOST', 'localhost'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset'  => 'utf8',
            'prefix'   => '',
            'schema'   => 'public',
        ],

        'sqlsrv' => [
            'driver'   => 'sqlsrv',
            'host'     => env('DB_HOST', 'localhost'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset'  => 'utf8',
            'prefix'   => '',
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | 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 set of commands than a typical key-value systems
    | such as APC or Memcached. Laravel makes it easy to dig right in.
    |
    */

    'redis' => [

        'cluster' => false,

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

    ],

];

当我 var_dump 第一个日志行时的返回 http://puu.sh/nJLtV/028b2b5192.jpg

我希望你们知道，因为我不知道。

Answer 1

更改 .env 文件中的 DB_HOST:

DB_HOST=localhost

到

DB_HOST=127.0.0.1