Laravel [1045] Access denied for user 'homestead'@'localhost' .env没有配置

laravel 连接数据库出现错误  

PDOException in Connector.php line 55:SQLSTATE[HY000] [1045] 
Access denied for user 'homestead'@'localhost' (using password: YES)

　　

1. 确认./config/database.php 

<?php
return [
    'default' => env('DB_CONNECTION', 'mysql'),
      'connections' => [

        'sqlite' => [
            'driver' => 'sqlite',
            'database' => env('DB_DATABASE', database_path('database.sqlite')),
            'prefix' => '',
        ],

        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'studyonline'),
            'username' => env('DB_USERNAME', 'root'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8',
            'collation' => 'utf8_general_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],
        // ...
     ]
]

　　

2. 检查.env文件

  默认的配置导致的错误

DB_DATABASE=homestead

DB_USERNAME=homestead

DB_PASSWORD=secret

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:cdQLOKNt6JfRuIwfABQ/rqDuR42lgFi8qCC5b4R/KsI=
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

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

　　

3. 重启服务

php artisan cache:clear
php artisan config:clear
php artisan serve

　　

cd ./public
php -S localhost:9000

　　

laravel artisan 一些命令

* 创建model

php artisan make:model Video

 执行后生成 ./app/Video.php

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Video extends Model
{
    //
}

　　

* 创建Controller

php artisan make:controller UserController

 执行后生成  ./app/Http/Controllers/UserController.php

<?php
namespace AppHttpControllers;

use IlluminateHttpRequest;

class UserController extends Controller {

}

* 创建数据库消息队列的数据表迁移文件

php artisan queue:table

　　=> database/migrations/2018_07_21_033228_create_jobs_table.php

<?php

use IlluminateSupportFacadesSchema;
use IlluminateDatabaseSchemaBlueprint;
use IlluminateDatabaseMigrationsMigration;

class CreateJobsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('jobs', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('queue')->index();
            $table->longText('payload');
            $table->unsignedTinyInteger('attempts');
            $table->unsignedInteger('reserved_at')->nullable();
            $table->unsignedInteger('available_at');
            $table->unsignedInteger('created_at');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('jobs');
    }
}

php artisan migrate

　　=> 数据表结构 jobs表

-- MySQL dump 10.16  Distrib 10.1.31-MariaDB, for osx10.6 (i386)
--
-- Host: localhost    Database: laravel
-- ------------------------------------------------------
-- Server version    10.1.31-MariaDB

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `jobs`
--

DROP TABLE IF EXISTS `jobs`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `jobs` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `queue` varchar(255) NOT NULL,
  `payload` longtext NOT NULL,
  `attempts` tinyint(3) unsigned NOT NULL,
  `reserved_at` int(10) unsigned DEFAULT NULL,
  `available_at` int(10) unsigned NOT NULL,
  `created_at` int(10) unsigned NOT NULL,
  PRIMARY KEY (`id`),
  KEY `jobs_queue_index` (`queue`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `jobs`
--

LOCK TABLES `jobs` WRITE;
/*!40000 ALTER TABLE `jobs` DISABLE KEYS */;
/*!40000 ALTER TABLE `jobs` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2018-07-21 11:39:29

 假设数据库名为 laravel， 导出这个表

mysqldump -uroot -hlocalhost -p --databases laravel --tables jobs > jobs.sql

　　创建controller

php artisan make:controller WelcomeController

　　

ERROR:

Illuminate Database  QueryException(42S22)

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'updated_at' in 'field list' (SQL: update `t_video` set `location` = http://video.tfjyzx.com/cd16bf18f8394f2aa25fb1efc814a09e/e2ac5e5effd8490d819f6025b37c38c2-5287d2089db37e62345123a1be272f8b.mp4, `updated_at` = 2018-07-14 08:43:48 where `id` = 1)

 

@Ref: https://docs.golaravel.com/docs/5.6/eloquent/

Timestamps

By default, Eloquent expects created_at and updated_at columns to exist on your tables. If you do not wish to have these columns automatically managed by Eloquent, set the $timestamps property on your model to false:

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Video extends Model {
    protected $table = 't_video';
    protected $primaryKey = 'id';
    public $timestamps = false; /* Indicates if the model should be timestamped. */
}